linux vulnerability

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    "data": "Jonathan Looney discovered that the TCP_SKB_CB(skb)-\u003etcp_gso_segs value was subject to an integer overflow in the Linux kernel when handling TCP Selective Acknowledgments (SACKs). A remote attacker could use this to cause a denial of service. This has been fixed in stable kernel releases 4.4.182, 4.9.182, 4.14.127, 4.19.52, 5.1.11, and is fixed in commit 3b4929f65b0d8249f19a50245cd88ed1a2f78cff. A successful exploit could cause the targeted system to crash, resulting in a DoS condition. \nProof-of-concept (PoC) code that demonstrates an exploit of this vulnerability is publicly available. \nKernel.org has confirmed the vulnerability and released software updates. -----BEGIN PGP SIGNED MESSAGE-----\nHash: SHA256\n\n====================================================================                   \nRed Hat Security Advisory\n\nSynopsis:          Important: kernel security and bug fix update\nAdvisory ID:       RHSA-2019:1484-01\nProduct:           Red Hat Enterprise Linux\nAdvisory URL:      https://access.redhat.com/errata/RHSA-2019:1484\nIssue date:        2019-06-17\nCVE Names:         CVE-2019-11477 CVE-2019-11478 CVE-2019-11479\n====================================================================\n1. Summary:\n\nAn update for kernel is now available for Red Hat Enterprise Linux 7.3\nAdvanced Update Support, Red Hat Enterprise Linux 7.3 Telco Extended Update\nSupport, and Red Hat Enterprise Linux 7.3 Update Services for SAP\nSolutions. \n\nRed Hat Product Security has rated this update as having a security impact\nof Important. A Common Vulnerability Scoring System (CVSS) base score,\nwhich gives a detailed severity rating, is available for each vulnerability\nfrom the CVE link(s) in the References section. \n\n2. Relevant releases/architectures:\n\nRed Hat Enterprise Linux Server AUS (v. 7.3) - noarch, x86_64\nRed Hat Enterprise Linux Server E4S (v. 7.3) - noarch, ppc64le, x86_64\nRed Hat Enterprise Linux Server Optional AUS (v. 7.3) - x86_64\nRed Hat Enterprise Linux Server Optional E4S (v. 7.3) - ppc64le, x86_64\nRed Hat Enterprise Linux Server Optional TUS (v. 7.3) - x86_64\nRed Hat Enterprise Linux Server TUS (v. 7.3) - noarch, x86_64\n\n3. While processing SACK segments, the Linux kernel\u0027s socket buffer\n(SKB) data structure becomes fragmented. Each fragment is about TCP maximum\nsegment size (MSS) bytes. To efficiently process SACK blocks, the Linux\nkernel merges multiple fragmented SKBs into one, potentially overflowing\nthe variable holding the number of segments. A remote attacker could use\nthis flaw to crash the Linux kernel by sending a crafted sequence of SACK\nsegments on a TCP connection with small value of TCP MSS, resulting in a\ndenial of service (DoS). (CVE-2019-11477)\n\n* Kernel: tcp: excessive resource consumption while processing SACK blocks\nallows remote denial of service (CVE-2019-11478)\n\n* Kernel: tcp: excessive resource consumption for TCP connections with low\nMSS allows remote denial of service (CVE-2019-11479)\n\nFor more details about the security issue(s), including the impact, a CVSS\nscore, acknowledgments, and other related information, refer to the CVE\npage(s) listed in the References section. \n\nBug Fix(es):\n\n* THP: Race between MADV_DONTNEED and NUMA hinting node migration code\n(BZ#1698104)\n\n* [RHEL7] md_clear flag missing from /proc/cpuinfo on late microcode update\n(BZ#1712990)\n\n* [RHEL7] MDS mitigations are not enabled after double microcode update\n(BZ#1712995)\n\n* WARNING: CPU: 0 PID: 0 at kernel/jump_label.c:90\n__static_key_slow_dec+0xa6/0xb0 (BZ#1713001)\n\n4. Solution:\n\nFor details on how to apply this update, which includes the changes\ndescribed in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258\n\nThe system must be rebooted for this update to take effect. \n\n5. Bugs fixed (https://bugzilla.redhat.com/):\n\n1719123 - CVE-2019-11477 Kernel: tcp: integer overflow while processing SACK blocks allows remote denial of service\n1719128 - CVE-2019-11478 Kernel: tcp: excessive resource consumption while processing SACK blocks allows remote denial of service\n1719129 - CVE-2019-11479 Kernel: tcp: excessive resource consumption for TCP connections with low MSS allows remote denial of service\n\n6. 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Hat Enterprise Linux Server TUS (v. 7.3):\n\nSource:\nkernel-3.10.0-514.66.2.el7.src.rpm\n\nnoarch:\nkernel-abi-whitelists-3.10.0-514.66.2.el7.noarch.rpm\nkernel-doc-3.10.0-514.66.2.el7.noarch.rpm\n\nx86_64:\nkernel-3.10.0-514.66.2.el7.x86_64.rpm\nkernel-debug-3.10.0-514.66.2.el7.x86_64.rpm\nkernel-debug-debuginfo-3.10.0-514.66.2.el7.x86_64.rpm\nkernel-debug-devel-3.10.0-514.66.2.el7.x86_64.rpm\nkernel-debuginfo-3.10.0-514.66.2.el7.x86_64.rpm\nkernel-debuginfo-common-x86_64-3.10.0-514.66.2.el7.x86_64.rpm\nkernel-devel-3.10.0-514.66.2.el7.x86_64.rpm\nkernel-headers-3.10.0-514.66.2.el7.x86_64.rpm\nkernel-tools-3.10.0-514.66.2.el7.x86_64.rpm\nkernel-tools-debuginfo-3.10.0-514.66.2.el7.x86_64.rpm\nkernel-tools-libs-3.10.0-514.66.2.el7.x86_64.rpm\nperf-3.10.0-514.66.2.el7.x86_64.rpm\nperf-debuginfo-3.10.0-514.66.2.el7.x86_64.rpm\npython-perf-3.10.0-514.66.2.el7.x86_64.rpm\npython-perf-debuginfo-3.10.0-514.66.2.el7.x86_64.rpm\n\nRed Hat Enterprise Linux Server Optional AUS (v. 7.3):\n\nx86_64:\nkernel-debug-debuginfo-3.10.0-514.66.2.el7.x86_64.rpm\nkernel-debuginfo-3.10.0-514.66.2.el7.x86_64.rpm\nkernel-debuginfo-common-x86_64-3.10.0-514.66.2.el7.x86_64.rpm\nkernel-tools-debuginfo-3.10.0-514.66.2.el7.x86_64.rpm\nkernel-tools-libs-devel-3.10.0-514.66.2.el7.x86_64.rpm\nperf-debuginfo-3.10.0-514.66.2.el7.x86_64.rpm\npython-perf-debuginfo-3.10.0-514.66.2.el7.x86_64.rpm\n\nRed Hat Enterprise Linux Server Optional E4S (v. 7.3):\n\nppc64le:\nkernel-debug-debuginfo-3.10.0-514.66.2.el7.ppc64le.rpm\nkernel-debuginfo-3.10.0-514.66.2.el7.ppc64le.rpm\nkernel-debuginfo-common-ppc64le-3.10.0-514.66.2.el7.ppc64le.rpm\nkernel-tools-debuginfo-3.10.0-514.66.2.el7.ppc64le.rpm\nkernel-tools-libs-devel-3.10.0-514.66.2.el7.ppc64le.rpm\nperf-debuginfo-3.10.0-514.66.2.el7.ppc64le.rpm\npython-perf-debuginfo-3.10.0-514.66.2.el7.ppc64le.rpm\n\nx86_64:\nkernel-debug-debuginfo-3.10.0-514.66.2.el7.x86_64.rpm\nkernel-debuginfo-3.10.0-514.66.2.el7.x86_64.rpm\nkernel-debuginfo-common-x86_64-3.10.0-514.66.2.el7.x86_64.rpm\nkernel-tools-debuginfo-3.10.0-514.66.2.el7.x86_64.rpm\nkernel-tools-libs-devel-3.10.0-514.66.2.el7.x86_64.rpm\nperf-debuginfo-3.10.0-514.66.2.el7.x86_64.rpm\npython-perf-debuginfo-3.10.0-514.66.2.el7.x86_64.rpm\n\nRed Hat Enterprise Linux Server Optional TUS (v. 7.3):\n\nx86_64:\nkernel-debug-debuginfo-3.10.0-514.66.2.el7.x86_64.rpm\nkernel-debuginfo-3.10.0-514.66.2.el7.x86_64.rpm\nkernel-debuginfo-common-x86_64-3.10.0-514.66.2.el7.x86_64.rpm\nkernel-tools-debuginfo-3.10.0-514.66.2.el7.x86_64.rpm\nkernel-tools-libs-devel-3.10.0-514.66.2.el7.x86_64.rpm\nperf-debuginfo-3.10.0-514.66.2.el7.x86_64.rpm\npython-perf-debuginfo-3.10.0-514.66.2.el7.x86_64.rpm\n\nThese packages are GPG signed by Red Hat for security.  Our key and\ndetails on how to verify the signature are available from\nhttps://access.redhat.com/security/team/key/\n\n7. References:\n\nhttps://access.redhat.com/security/cve/CVE-2019-11477\nhttps://access.redhat.com/security/cve/CVE-2019-11478\nhttps://access.redhat.com/security/cve/CVE-2019-11479\nhttps://access.redhat.com/security/updates/classification/#important\nhttps://access.redhat.com/security/vulnerabilities/tcpsack\n\n8. Contact:\n\nThe Red Hat security contact is \u003csecalert@redhat.com\u003e. More contact\ndetails at https://access.redhat.com/security/team/contact/\n\nCopyright 2019 Red Hat, Inc. \n-----BEGIN PGP SIGNATURE-----\nVersion: GnuPG v1\n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\nHtgga2C1aeg\\xa3py\n-----END PGP SIGNATURE-----\n\n--\nRHSA-announce mailing list\nRHSA-announce@redhat.com\nhttps://www.redhat.com/mailman/listinfo/rhsa-announce\n. ==========================================================================\nKernel Live Patch Security Notice 0058-1\nOctober 22, 2019\n\nlinux vulnerability\n==========================================================================\n\nA security issue affects these releases of Ubuntu:\n\n| Series           | Base kernel  | Arch     | flavors          |\n|------------------+--------------+----------+------------------|\n| Ubuntu 18.04 LTS | 4.15.0       | amd64    | aws              |\n| Ubuntu 18.04 LTS | 4.15.0       | amd64    | generic          |\n| Ubuntu 18.04 LTS | 4.15.0       | amd64    | lowlatency       |\n| Ubuntu 18.04 LTS | 4.15.0       | amd64    | oem              |\n| Ubuntu 18.04 LTS | 5.0.0        | amd64    | azure            |\n| Ubuntu 14.04 LTS | 4.4.0        | amd64    | generic          |\n| Ubuntu 14.04 LTS | 4.4.0        | amd64    | lowlatency       |\n| Ubuntu 16.04 LTS | 4.4.0        | amd64    | aws              |\n| Ubuntu 16.04 LTS | 4.4.0        | amd64    | generic          |\n| Ubuntu 16.04 LTS | 4.4.0        | amd64    | lowlatency       |\n| Ubuntu 16.04 LTS | 4.15.0       | amd64    | azure            |\n| Ubuntu 16.04 LTS | 4.15.0       | amd64    | generic          |\n| Ubuntu 16.04 LTS | 4.15.0       | amd64    | lowlatency       |\n\nSummary:\n\nSeveral security issues were fixed in the kernel. \n\nSoftware Description:\n- linux: Linux kernel\n\nDetails:\n\nIt was discovered that a race condition existed in the GFS2 file system in\nthe Linux kernel. (CVE-2016-10905)\n\nIt was discovered that a use-after-free error existed in the block layer\nsubsystem of the Linux kernel when certain failure conditions occurred. (CVE-2018-20856)\n\nIt was discovered that the USB gadget Midi driver in the Linux kernel\ncontained a double-free vulnerability when handling certain error\nconditions. (CVE-2018-20961)\n\nIt was discovered that the XFS file system in the Linux kernel did not\nproperly handle mount failures in some situations. (CVE-2018-20976)\n\nIt was discovered that the RSI 91x Wi-Fi driver in the Linux kernel did not\ndid not handle detach operations correctly, leading to a use-after-free\nvulnerability. \n(CVE-2018-21008)\n\nIt was discovered that the Intel Wi-Fi device driver in the Linux kernel\ndid not properly validate certain Tunneled Direct Link Setup (TDLS). (CVE-2019-0136)\n\nIt was discovered that the Linux kernel on ARM processors allowed a tracing\nprocess to modify a syscall after a seccomp decision had been made on that\nsyscall. (CVE-2019-2181)\n\nIt was discovered that the Marvell Wireless LAN device driver in the Linux\nkernel did not properly validate the BSS descriptor. (CVE-2019-3846)\n\nIt was discovered that a heap buffer overflow existed in the Marvell\nWireless LAN device driver for the Linux kernel. (CVE-2019-10126)\n\nIt was discovered that the Bluetooth UART implementation in the Linux\nkernel did not properly check for missing tty operations. (CVE-2019-11478)\n\nIt was discovered that the ext4 file system implementation in the Linux\nkernel did not properly zero out memory in some situations. A local\nattacker could use this to expose sensitive information (kernel memory). \n(CVE-2019-11833)\n\nIt was discovered that the PowerPC dlpar implementation in the Linux kernel\ndid not properly check for allocation errors in some situations. (CVE-2019-12614)\n\nIt was discovered that the floppy driver in the Linux kernel did not\nproperly validate meta data, leading to a buffer overread. \n(CVE-2019-14283)\n\nIt was discovered that the floppy driver in the Linux kernel did not\nproperly validate ioctl() calls, leading to a division-by-zero. \n(CVE-2019-14284)\n\nWen Huang discovered that the Marvell Wi-Fi device driver in the Linux\nkernel did not properly perform bounds checking, leading to a heap\noverflow. (CVE-2019-14814)\n\nWen Huang discovered that the Marvell Wi-Fi device driver in the Linux\nkernel did not properly perform bounds checking, leading to a heap\noverflow. (CVE-2019-14815)\n\nWen Huang discovered that the Marvell Wi-Fi device driver in the Linux\nkernel did not properly perform bounds checking, leading to a heap\noverflow. (CVE-2019-14816)\n\nMatt Delco discovered that the KVM hypervisor implementation in the Linux\nkernel did not properly perform bounds checking when handling coalesced\nMMIO write operations. (CVE-2019-14821)\n\nPeter Pi discovered a buffer overflow in the virtio network backend\n(vhost_net) implementation in the Linux kernel. (CVE-2019-14835)\n\nUpdate instructions:\n\nThe problem can be corrected by updating your livepatches to the following\nversions:\n\n| Kernel                   | Version  | flavors                  |\n|--------------------------+----------+--------------------------|\n| 4.4.0-148.174            | 58.1     | lowlatency, generic      |\n| 4.4.0-148.174~14.04.1    | 58.1     | lowlatency, generic      |\n| 4.4.0-150.176            | 58.1     | generic, lowlatency      |\n| 4.4.0-150.176~14.04.1    | 58.1     | lowlatency, generic      |\n| 4.4.0-151.178            | 58.1     | lowlatency, generic      |\n| 4.4.0-151.178~14.04.1    | 58.1     | generic, lowlatency      |\n| 4.4.0-154.181            | 58.1     | lowlatency, generic      |\n| 4.4.0-154.181~14.04.1    | 58.1     | generic, lowlatency      |\n| 4.4.0-157.185            | 58.1     | lowlatency, generic      |\n| 4.4.0-157.185~14.04.1    | 58.1     | generic, lowlatency      |\n| 4.4.0-159.187            | 58.1     | lowlatency, generic      |\n| 4.4.0-159.187~14.04.1    | 58.1     | generic, lowlatency      |\n| 4.4.0-161.189            | 58.1     | lowlatency, generic      |\n| 4.4.0-161.189~14.04.1    | 58.1     | lowlatency, generic      |\n| 4.4.0-164.192            | 58.1     | lowlatency, generic      |\n| 4.4.0-164.192~14.04.1    | 58.1     | lowlatency, generic      |\n| 4.4.0-165.193            | 58.1     | generic, lowlatency      |\n| 4.4.0-1083.93            | 58.1     | aws                      |\n| 4.4.0-1084.94            | 58.1     | aws                      |\n| 4.4.0-1085.96            | 58.1     | aws                      |\n| 4.4.0-1087.98            | 58.1     | aws                      |\n| 4.4.0-1088.99            | 58.1     | aws                      |\n| 4.4.0-1090.101           | 58.1     | aws                      |\n| 4.4.0-1092.103           | 58.1     | aws                      |\n| 4.4.0-1094.105           | 58.1     | aws                      |\n| 4.15.0-50.54             | 58.1     | generic, lowlatency      |\n| 4.15.0-50.54~16.04.1     | 58.1     | generic, lowlatency      |\n| 4.15.0-51.55             | 58.1     | generic, lowlatency      |\n| 4.15.0-51.55~16.04.1     | 58.1     | generic, lowlatency      |\n| 4.15.0-52.56             | 58.1     | lowlatency, generic      |\n| 4.15.0-52.56~16.04.1     | 58.1     | generic, lowlatency      |\n| 4.15.0-54.58             | 58.1     | generic, lowlatency      |\n| 4.15.0-54.58~16.04.1     | 58.1     | generic, lowlatency      |\n| 4.15.0-55.60             | 58.1     | generic, lowlatency      |\n| 4.15.0-58.64             | 58.1     | generic, lowlatency      |\n| 4.15.0-58.64~16.04.1     | 58.1     | lowlatency, generic      |\n| 4.15.0-60.67             | 58.1     | lowlatency, generic      |\n| 4.15.0-60.67~16.04.1     | 58.1     | generic, lowlatency      |\n| 4.15.0-62.69             | 58.1     | generic, lowlatency      |\n| 4.15.0-62.69~16.04.1     | 58.1     | lowlatency, generic      |\n| 4.15.0-64.73             | 58.1     | generic, lowlatency      |\n| 4.15.0-64.73~16.04.1     | 58.1     | lowlatency, generic      |\n| 4.15.0-65.74             | 58.1     | lowlatency, generic      |\n| 4.15.0-1038.43           | 58.1     | oem                      |\n| 4.15.0-1039.41           | 58.1     | aws                      |\n| 4.15.0-1039.44           | 58.1     | oem                      |\n| 4.15.0-1040.42           | 58.1     | aws                      |\n| 4.15.0-1041.43           | 58.1     | aws                      |\n| 4.15.0-1043.45           | 58.1     | aws                      |\n| 4.15.0-1043.48           | 58.1     | oem                      |\n| 4.15.0-1044.46           | 58.1     | aws                      |\n| 4.15.0-1045.47           | 58.1     | aws                      |\n| 4.15.0-1045.50           | 58.1     | oem                      |\n| 4.15.0-1047.49           | 58.1     | aws                      |\n| 4.15.0-1047.51           | 58.1     | azure                    |\n| 4.15.0-1048.50           | 58.1     | aws                      |\n| 4.15.0-1049.54           | 58.1     | azure                    |\n| 4.15.0-1050.52           | 58.1     | aws                      |\n| 4.15.0-1050.55           | 58.1     | azure                    |\n| 4.15.0-1050.57           | 58.1     | oem                      |\n| 4.15.0-1051.53           | 58.1     | aws                      |\n| 4.15.0-1051.56           | 58.1     | azure                    |\n| 4.15.0-1052.57           | 58.1     | azure                    |\n| 4.15.0-1055.60           | 58.1     | azure                    |\n| 4.15.0-1056.61           | 58.1     | azure                    |\n| 4.15.0-1056.65           | 58.1     | oem                      |\n| 4.15.0-1057.62           | 58.1     | azure                    |\n| 4.15.0-1057.66           | 58.1     | oem                      |\n| 4.15.0-1059.64           | 58.1     | azure                    |\n| 5.0.0-1014.14~18.04.1    | 58.1     | azure                    |\n| 5.0.0-1016.17~18.04.1    | 58.1     | azure                    |\n| 5.0.0-1018.19~18.04.1    | 58.1     | azure                    |\n| 5.0.0-1020.21~18.04.1    | 58.1     | azure                    |\n\nSupport Information:\n\nKernels older than the levels listed below do not receive livepatch\nupdates. Please upgrade your kernel as soon as possible. \n\n| Series           | Version          | Flavors                  |\n|------------------+------------------+--------------------------|\n| Ubuntu 18.04 LTS | 4.15.0-1039      | aws                      |\n| Ubuntu 16.04 LTS | 4.4.0-1083       | aws                      |\n| Ubuntu 18.04 LTS | 5.0.0-1000       | azure                    |\n| Ubuntu 16.04 LTS | 4.15.0-1047      | azure                    |\n| Ubuntu 18.04 LTS | 4.15.0-50        | generic lowlatency       |\n| Ubuntu 16.04 LTS | 4.15.0-50        | generic lowlatency       |\n| Ubuntu 14.04 LTS | 4.4.0-148        | generic lowlatency       |\n| Ubuntu 18.04 LTS | 4.15.0-1038      | oem                      |\n| Ubuntu 16.04 LTS | 4.4.0-148        | generic lowlatency       |\n\nReferences:\n  CVE-2016-10905, CVE-2018-20856, CVE-2018-20961, CVE-2018-20976, \n  CVE-2018-21008, CVE-2019-0136, CVE-2019-2054, CVE-2019-2181, \n  CVE-2019-3846, CVE-2019-10126, CVE-2019-10207, CVE-2019-11477, \n  CVE-2019-11478, CVE-2019-11833, CVE-2019-12614, CVE-2019-14283, \n  CVE-2019-14284, CVE-2019-14814, CVE-2019-14815, CVE-2019-14816, \n  CVE-2019-14821, CVE-2019-14835\n\n\n-- \nubuntu-security-announce mailing list\nubuntu-security-announce@lists.ubuntu.com\nModify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-security-announce\n. Description:\n\nThe kernel-rt packages provide the Real Time Linux Kernel, which enables\nfine-tuning for systems with extremely high determinism requirements. \n\nBug Fix(es):\n\n* update the MRG 2.5.z 3.10 kernel-rt sources (BZ#1711010)\n\n4. \n(CVE-2019-11477)\n\nUpdate instructions:\n\nThe problem can be corrected by updating your system to the following\npackage versions:\n\nUbuntu 19.04:\n  linux-image-5.0.0-1008-aws      5.0.0-1008.8\n  linux-image-5.0.0-1008-gcp      5.0.0-1008.8\n  linux-image-5.0.0-1008-kvm      5.0.0-1008.8\n  linux-image-5.0.0-1010-raspi2   5.0.0-1010.10\n  linux-image-5.0.0-1014-snapdragon  5.0.0-1014.14\n  linux-image-5.0.0-17-generic    5.0.0-17.18\n  linux-image-5.0.0-17-generic-lpae  5.0.0-17.18\n  linux-image-5.0.0-17-lowlatency  5.0.0-17.18\n  linux-image-aws                 5.0.0.1008.8\n  linux-image-gcp                 5.0.0.1008.8\n  linux-image-generic             5.0.0.17.18\n  linux-image-generic-lpae        5.0.0.17.18\n  linux-image-gke                 5.0.0.1008.8\n  linux-image-kvm                 5.0.0.1008.8\n  linux-image-lowlatency          5.0.0.17.18\n  linux-image-raspi2              5.0.0.1010.7\n  linux-image-snapdragon          5.0.0.1014.7\n  linux-image-virtual             5.0.0.17.18\n\nUbuntu 18.10:\n  linux-image-4.18.0-1013-gcp     4.18.0-1013.14\n  linux-image-4.18.0-1014-kvm     4.18.0-1014.14\n  linux-image-4.18.0-1016-raspi2  4.18.0-1016.18\n  linux-image-4.18.0-1018-aws     4.18.0-1018.20\n  linux-image-4.18.0-1020-azure   4.18.0-1020.20\n  linux-image-4.18.0-22-generic   4.18.0-22.23\n  linux-image-4.18.0-22-generic-lpae  4.18.0-22.23\n  linux-image-4.18.0-22-lowlatency  4.18.0-22.23\n  linux-image-4.18.0-22-snapdragon  4.18.0-22.23\n  linux-image-aws                 4.18.0.1018.18\n  linux-image-azure               4.18.0.1020.21\n  linux-image-gcp                 4.18.0.1013.13\n  linux-image-generic             4.18.0.22.23\n  linux-image-generic-lpae        4.18.0.22.23\n  linux-image-gke                 4.18.0.1013.13\n  linux-image-kvm                 4.18.0.1014.14\n  linux-image-lowlatency          4.18.0.22.23\n  linux-image-raspi2              4.18.0.1016.13\n  linux-image-snapdragon          4.18.0.22.23\n  linux-image-virtual             4.18.0.22.23\n\nUbuntu 18.04 LTS:\n  linux-image-4.15.0-1015-oracle  4.15.0-1015.17\n  linux-image-4.15.0-1034-gcp     4.15.0-1034.36\n  linux-image-4.15.0-1036-kvm     4.15.0-1036.36\n  linux-image-4.15.0-1038-raspi2  4.15.0-1038.40\n  linux-image-4.15.0-1041-aws     4.15.0-1041.43\n  linux-image-4.15.0-1043-oem     4.15.0-1043.48\n  linux-image-4.15.0-1055-snapdragon  4.15.0-1055.59\n  linux-image-4.15.0-52-generic   4.15.0-52.56\n  linux-image-4.15.0-52-generic-lpae  4.15.0-52.56\n  linux-image-4.15.0-52-lowlatency  4.15.0-52.56\n  linux-image-4.18.0-1020-azure   4.18.0-1020.20~18.04.1\n  linux-image-4.18.0-22-generic   4.18.0-22.23~18.04.1\n  linux-image-4.18.0-22-generic-lpae  4.18.0-22.23~18.04.1\n  linux-image-4.18.0-22-lowlatency  4.18.0-22.23~18.04.1\n  linux-image-4.18.0-22-snapdragon  4.18.0-22.23~18.04.1\n  linux-image-aws                 4.15.0.1041.40\n  linux-image-azure               4.18.0.1020.19\n  linux-image-gcp                 4.15.0.1034.36\n  linux-image-generic             4.15.0.52.54\n  linux-image-generic-hwe-18.04   4.18.0.22.72\n  linux-image-generic-lpae        4.15.0.52.54\n  linux-image-generic-lpae-hwe-18.04  4.18.0.22.72\n  linux-image-kvm                 4.15.0.1036.36\n  linux-image-lowlatency          4.15.0.52.54\n  linux-image-lowlatency-hwe-18.04  4.18.0.22.72\n  linux-image-oem                 4.15.0.1043.47\n  linux-image-oracle              4.15.0.1015.18\n  linux-image-raspi2              4.15.0.1038.36\n  linux-image-snapdragon          4.15.0.1055.58\n  linux-image-snapdragon-hwe-18.04  4.18.0.22.72\n  linux-image-virtual             4.15.0.52.54\n  linux-image-virtual-hwe-18.04   4.18.0.22.72\n\nUbuntu 16.04 LTS:\n  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4.4.0.1085.88\n  linux-image-aws-hwe             4.15.0.1041.41\n  linux-image-azure               4.15.0.1047.51\n  linux-image-gcp                 4.15.0.1034.48\n  linux-image-generic             4.4.0.151.159\n  linux-image-generic-hwe-16.04   4.15.0.52.73\n  linux-image-generic-lpae        4.4.0.151.159\n  linux-image-generic-lpae-hwe-16.04  4.15.0.52.73\n  linux-image-gke                 4.15.0.1034.48\n  linux-image-kvm                 4.4.0.1048.48\n  linux-image-lowlatency          4.4.0.151.159\n  linux-image-lowlatency-hwe-16.04  4.15.0.52.73\n  linux-image-oem                 4.15.0.52.73\n  linux-image-oracle              4.15.0.1015.9\n  linux-image-powerpc-e500mc      4.4.0.151.159\n  linux-image-powerpc-smp         4.4.0.151.159\n  linux-image-powerpc64-emb       4.4.0.151.159\n  linux-image-powerpc64-smp       4.4.0.151.159\n  linux-image-raspi2              4.4.0.1111.111\n  linux-image-snapdragon          4.4.0.1115.107\n  linux-image-virtual             4.4.0.151.159\n  linux-image-virtual-hwe-16.04   4.15.0.52.73\n\nAfter a standard system update you need to reboot your computer to make\nall the necessary changes. \n\nATTENTION: Due to an unavoidable ABI change the kernel updates have\nbeen given a new version number, which requires you to recompile and\nreinstall all third party kernel modules you might have installed. \nUnless you manually uninstalled the standard kernel metapackages\n(e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual,\nlinux-powerpc), a standard system upgrade will automatically perform\nthis as well. 8) - aarch64, noarch, ppc64le, s390x, x86_64\n\n3. \n\nBug Fix(es):\n\n* [HPE 8.0 Bug] nvme drive power button does not turn off drive\n(BZ#1700288)\n\n* RHEL8.0 - hw csum failure seen in dmesg and console (using\nmlx5/mlx4/Mellanox) (BZ#1700289)\n\n* RHEL8.0 - vfio-ap: add subsystem to matrix device to avoid libudev\nfailures (kvm) (BZ#1700290)\n\n* [FJ8.1 Bug]: Make Fujitsu Erratum 010001 patch work on A64FX v1r0\n(BZ#1700901)\n\n* [FJ8.0 Bug]: Fujitsu A64FX processor errata - panic by unknown fault\n(BZ#1700902)\n\n* RHEL 8.0 Snapshot 4 - nvme create-ns command hangs after creating 20\nnamespaces on Bolt (NVMe) (BZ#1701140)\n\n* [Cavium/Marvell 8.0 qed] Fix qed_mcp_halt() and qed_mcp_resume()\n(backporting bug) (BZ#1704184)\n\n* [Intel 8.1 Bug] PBF: Base frequency display fix (BZ#1706739)\n\n* [RHEL8]read/write operation not permitted to /sys/kernel/debug/gcov/reset\n(BZ#1708100)\n\n* RHEL8.0 - ISST-LTE:pVM:fleetwood:LPM:raylp85:After lpm seeing the\nconsole logs on the the lpar at  target side (BZ#1708102)\n\n* RHEL8.0 - Backport support for software count cache flush Spectre v2\nmitigation (BZ#1708112)\n\n* [Regression] RHEL8.0 - System crashed with one stress-ng-mremap stressor\non Boston (kvm host) (BZ#1708617)\n\n* [intel ice Rhel 8 RC1] ethtool -A ethx causes interfaces to go down\n(BZ#1709433)\n\n4. These packages include redhat-release-virtualization-host,\novirt-node, and rhev-hypervisor. RHVH features a Cockpit user\ninterface for monitoring the host\u0027s resources and performing administrative\ntasks. \n\nThe following packages have been upgraded to a later upstream version:\nredhat-release-virtualization-host (4.3.4), redhat-virtualization-host\n(4.3.4)",
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VAR-201906-1176

Vulnerability from variot - Updated: 2025-12-22 20:16

Jonathan Looney discovered that the TCP retransmission queue implementation in tcp_fragment in the Linux kernel could be fragmented when handling certain TCP Selective Acknowledgment (SACK) sequences. A remote attacker could use this to cause a denial of service. This has been fixed in stable kernel releases 4.4.182, 4.9.182, 4.14.127, 4.19.52, 5.1.11, and is fixed in commit f070ef2ac66716357066b683fb0baf55f8191a2e. Linux Kernel Contains a resource exhaustion vulnerability.Service operation interruption (DoS) There is a possibility of being put into a state. This vulnerability stems from improper management of system resources (such as memory, disk space, files, etc.) by network systems or products. A successful exploit could cause the targeted system to crash, resulting in a DoS condition. Proof-of-concept (PoC) code that demonstrates an exploit of this vulnerability is publicly available. Kernel.org has confirmed the vulnerability and released software updates. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256

====================================================================
Red Hat Security Advisory

Synopsis: Important: kernel security, bug fix, and enhancement update Advisory ID: RHSA-2019:1483-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2019:1483 Issue date: 2019-06-17 CVE Names: CVE-2018-7566 CVE-2018-1000004 CVE-2019-11477 CVE-2019-11478 CVE-2019-11479 ==================================================================== 1. Summary:

An update for kernel is now available for Red Hat Enterprise Linux 7.4 Extended Update Support.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Relevant releases/architectures:

Red Hat Enterprise Linux ComputeNode EUS (v. 7.4) - noarch, x86_64 Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.4) - x86_64 Red Hat Enterprise Linux Server EUS (v. 7.4) - noarch, ppc64, ppc64le, s390x, x86_64 Red Hat Enterprise Linux Server Optional EUS (v. 7.4) - ppc64, ppc64le, x86_64

Description:

The kernel packages contain the Linux kernel, the core of any Linux operating system. While processing SACK segments, the Linux kernel's socket buffer (SKB) data structure becomes fragmented. To efficiently process SACK blocks, the Linux kernel merges multiple fragmented SKBs into one, potentially overflowing the variable holding the number of segments. A remote attacker could use this flaw to crash the Linux kernel by sending a crafted sequence of SACK segments on a TCP connection with small value of TCP MSS, resulting in a denial of service (DoS). (CVE-2019-11477)

kernel: race condition in snd_seq_write() may lead to UAF or OOB-access (CVE-2018-7566)
kernel: Race condition in sound system can lead to denial of service (CVE-2018-1000004)
Kernel: tcp: excessive resource consumption while processing SACK blocks allows remote denial of service (CVE-2019-11478)
Kernel: tcp: excessive resource consumption for TCP connections with low MSS allows remote denial of service (CVE-2019-11479)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Bug Fix(es):

Mistmach between 'tty->termios->c_lflag' and 'ldata->icanon' for 'ICANON' (BZ#1708061)
RHEL7: rwsem reader/writer mutual exclusion guarantee may not work (BZ#1709702)
hardened usercopy is causing crash (BZ#1712311)
[RHEL7] md_clear flag missing from /proc/cpuinfo on late microcode update (BZ#1712991)
[RHEL7] MDS mitigations are not enabled after double microcode update (BZ#1712996)
WARNING: CPU: 0 PID: 0 at kernel/jump_label.c:90 __static_key_slow_dec+0xa6/0xb0 (BZ#1713002)
[debug kernel] [x86_64]INFO: possible circular locking dependency detected (BZ#1715326)
RHEL-7.7: tty: termios_rwsem possible deadlock (BZ#1715329)

Enhancement(s):

[MCHP 7.7 FEAT] Update smartpqi driver to latest upstream (BZ#1709467)
Solution:

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

The system must be rebooted for this update to take effect.

Bugs fixed (https://bugzilla.redhat.com/):

1535315 - CVE-2018-1000004 kernel: Race condition in sound system can lead to denial of service 1550142 - CVE-2018-7566 kernel: race condition in snd_seq_write() may lead to UAF or OOB-access 1719123 - CVE-2019-11477 Kernel: tcp: integer overflow while processing SACK blocks allows remote denial of service 1719128 - CVE-2019-11478 Kernel: tcp: excessive resource consumption while processing SACK blocks allows remote denial of service 1719129 - CVE-2019-11479 Kernel: tcp: excessive resource consumption for TCP connections with low MSS allows remote denial of service

Package List:

Red Hat Enterprise Linux ComputeNode EUS (v. 7.4):

Source: kernel-3.10.0-693.50.3.el7.src.rpm

noarch: kernel-abi-whitelists-3.10.0-693.50.3.el7.noarch.rpm kernel-doc-3.10.0-693.50.3.el7.noarch.rpm

x86_64: kernel-3.10.0-693.50.3.el7.x86_64.rpm kernel-debug-3.10.0-693.50.3.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-693.50.3.el7.x86_64.rpm kernel-debug-devel-3.10.0-693.50.3.el7.x86_64.rpm kernel-debuginfo-3.10.0-693.50.3.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-693.50.3.el7.x86_64.rpm kernel-devel-3.10.0-693.50.3.el7.x86_64.rpm kernel-headers-3.10.0-693.50.3.el7.x86_64.rpm kernel-tools-3.10.0-693.50.3.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-693.50.3.el7.x86_64.rpm kernel-tools-libs-3.10.0-693.50.3.el7.x86_64.rpm perf-3.10.0-693.50.3.el7.x86_64.rpm perf-debuginfo-3.10.0-693.50.3.el7.x86_64.rpm python-perf-3.10.0-693.50.3.el7.x86_64.rpm python-perf-debuginfo-3.10.0-693.50.3.el7.x86_64.rpm

Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.4):

x86_64: kernel-debug-debuginfo-3.10.0-693.50.3.el7.x86_64.rpm kernel-debuginfo-3.10.0-693.50.3.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-693.50.3.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-693.50.3.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-693.50.3.el7.x86_64.rpm perf-debuginfo-3.10.0-693.50.3.el7.x86_64.rpm python-perf-debuginfo-3.10.0-693.50.3.el7.x86_64.rpm

Red Hat Enterprise Linux Server EUS (v. 7.4):

Source: kernel-3.10.0-693.50.3.el7.src.rpm

noarch: kernel-abi-whitelists-3.10.0-693.50.3.el7.noarch.rpm kernel-doc-3.10.0-693.50.3.el7.noarch.rpm

ppc64: kernel-3.10.0-693.50.3.el7.ppc64.rpm kernel-bootwrapper-3.10.0-693.50.3.el7.ppc64.rpm kernel-debug-3.10.0-693.50.3.el7.ppc64.rpm kernel-debug-debuginfo-3.10.0-693.50.3.el7.ppc64.rpm kernel-debug-devel-3.10.0-693.50.3.el7.ppc64.rpm kernel-debuginfo-3.10.0-693.50.3.el7.ppc64.rpm kernel-debuginfo-common-ppc64-3.10.0-693.50.3.el7.ppc64.rpm kernel-devel-3.10.0-693.50.3.el7.ppc64.rpm kernel-headers-3.10.0-693.50.3.el7.ppc64.rpm kernel-tools-3.10.0-693.50.3.el7.ppc64.rpm kernel-tools-debuginfo-3.10.0-693.50.3.el7.ppc64.rpm kernel-tools-libs-3.10.0-693.50.3.el7.ppc64.rpm perf-3.10.0-693.50.3.el7.ppc64.rpm perf-debuginfo-3.10.0-693.50.3.el7.ppc64.rpm python-perf-3.10.0-693.50.3.el7.ppc64.rpm python-perf-debuginfo-3.10.0-693.50.3.el7.ppc64.rpm

ppc64le: kernel-3.10.0-693.50.3.el7.ppc64le.rpm kernel-bootwrapper-3.10.0-693.50.3.el7.ppc64le.rpm kernel-debug-3.10.0-693.50.3.el7.ppc64le.rpm kernel-debug-debuginfo-3.10.0-693.50.3.el7.ppc64le.rpm kernel-debuginfo-3.10.0-693.50.3.el7.ppc64le.rpm kernel-debuginfo-common-ppc64le-3.10.0-693.50.3.el7.ppc64le.rpm kernel-devel-3.10.0-693.50.3.el7.ppc64le.rpm kernel-headers-3.10.0-693.50.3.el7.ppc64le.rpm kernel-tools-3.10.0-693.50.3.el7.ppc64le.rpm kernel-tools-debuginfo-3.10.0-693.50.3.el7.ppc64le.rpm kernel-tools-libs-3.10.0-693.50.3.el7.ppc64le.rpm perf-3.10.0-693.50.3.el7.ppc64le.rpm perf-debuginfo-3.10.0-693.50.3.el7.ppc64le.rpm python-perf-3.10.0-693.50.3.el7.ppc64le.rpm python-perf-debuginfo-3.10.0-693.50.3.el7.ppc64le.rpm

s390x: kernel-3.10.0-693.50.3.el7.s390x.rpm kernel-debug-3.10.0-693.50.3.el7.s390x.rpm kernel-debug-debuginfo-3.10.0-693.50.3.el7.s390x.rpm kernel-debug-devel-3.10.0-693.50.3.el7.s390x.rpm kernel-debuginfo-3.10.0-693.50.3.el7.s390x.rpm kernel-debuginfo-common-s390x-3.10.0-693.50.3.el7.s390x.rpm kernel-devel-3.10.0-693.50.3.el7.s390x.rpm kernel-headers-3.10.0-693.50.3.el7.s390x.rpm kernel-kdump-3.10.0-693.50.3.el7.s390x.rpm kernel-kdump-debuginfo-3.10.0-693.50.3.el7.s390x.rpm kernel-kdump-devel-3.10.0-693.50.3.el7.s390x.rpm perf-3.10.0-693.50.3.el7.s390x.rpm perf-debuginfo-3.10.0-693.50.3.el7.s390x.rpm python-perf-3.10.0-693.50.3.el7.s390x.rpm python-perf-debuginfo-3.10.0-693.50.3.el7.s390x.rpm

x86_64: kernel-3.10.0-693.50.3.el7.x86_64.rpm kernel-debug-3.10.0-693.50.3.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-693.50.3.el7.x86_64.rpm kernel-debug-devel-3.10.0-693.50.3.el7.x86_64.rpm kernel-debuginfo-3.10.0-693.50.3.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-693.50.3.el7.x86_64.rpm kernel-devel-3.10.0-693.50.3.el7.x86_64.rpm kernel-headers-3.10.0-693.50.3.el7.x86_64.rpm kernel-tools-3.10.0-693.50.3.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-693.50.3.el7.x86_64.rpm kernel-tools-libs-3.10.0-693.50.3.el7.x86_64.rpm perf-3.10.0-693.50.3.el7.x86_64.rpm perf-debuginfo-3.10.0-693.50.3.el7.x86_64.rpm python-perf-3.10.0-693.50.3.el7.x86_64.rpm python-perf-debuginfo-3.10.0-693.50.3.el7.x86_64.rpm

Red Hat Enterprise Linux Server Optional EUS (v. 7.4):

ppc64: kernel-debug-debuginfo-3.10.0-693.50.3.el7.ppc64.rpm kernel-debuginfo-3.10.0-693.50.3.el7.ppc64.rpm kernel-debuginfo-common-ppc64-3.10.0-693.50.3.el7.ppc64.rpm kernel-tools-debuginfo-3.10.0-693.50.3.el7.ppc64.rpm kernel-tools-libs-devel-3.10.0-693.50.3.el7.ppc64.rpm perf-debuginfo-3.10.0-693.50.3.el7.ppc64.rpm python-perf-debuginfo-3.10.0-693.50.3.el7.ppc64.rpm

ppc64le: kernel-debug-debuginfo-3.10.0-693.50.3.el7.ppc64le.rpm kernel-debug-devel-3.10.0-693.50.3.el7.ppc64le.rpm kernel-debuginfo-3.10.0-693.50.3.el7.ppc64le.rpm kernel-debuginfo-common-ppc64le-3.10.0-693.50.3.el7.ppc64le.rpm kernel-tools-debuginfo-3.10.0-693.50.3.el7.ppc64le.rpm kernel-tools-libs-devel-3.10.0-693.50.3.el7.ppc64le.rpm perf-debuginfo-3.10.0-693.50.3.el7.ppc64le.rpm python-perf-debuginfo-3.10.0-693.50.3.el7.ppc64le.rpm

x86_64: kernel-debug-debuginfo-3.10.0-693.50.3.el7.x86_64.rpm kernel-debuginfo-3.10.0-693.50.3.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-693.50.3.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-693.50.3.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-693.50.3.el7.x86_64.rpm perf-debuginfo-3.10.0-693.50.3.el7.x86_64.rpm python-perf-debuginfo-3.10.0-693.50.3.el7.x86_64.rpm

These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key/

References:

https://access.redhat.com/security/cve/CVE-2018-7566 https://access.redhat.com/security/cve/CVE-2018-1000004 https://access.redhat.com/security/cve/CVE-2019-11477 https://access.redhat.com/security/cve/CVE-2019-11478 https://access.redhat.com/security/cve/CVE-2019-11479 https://access.redhat.com/security/updates/classification/#important https://access.redhat.com/security/vulnerabilities/tcpsack

Contact:

The Red Hat security contact is secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/

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-- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce . ========================================================================== Kernel Live Patch Security Notice 0052-1 June 18, 2019

linux vulnerability

A security issue affects these releases of Ubuntu:

| Series | Base kernel | Arch | flavors | |------------------+--------------+----------+------------------| | Ubuntu 18.04 LTS | 4.15.0 | amd64 | generic | | Ubuntu 18.04 LTS | 4.15.0 | amd64 | lowlatency | | Ubuntu 16.04 LTS | 4.4.0 | amd64 | generic | | Ubuntu 16.04 LTS | 4.4.0 | amd64 | lowlatency |

Summary:

Several security issues were fixed in the kernel. (CVE-2019-11478)

Update instructions:

The problem can be corrected by updating your livepatches to the following versions:

| Kernel | Version | flavors | |--------------------------+----------+--------------------------| | 4.4.0-148.174 | 52.3 | generic, lowlatency | | 4.4.0-150.176 | 52.3 | generic, lowlatency | | 4.15.0-50.54 | 52.3 | generic, lowlatency | | 4.15.0-50.54~16.04.1 | 52.3 | generic, lowlatency | | 4.15.0-51.55 | 52.3 | generic, lowlatency | | 4.15.0-51.55~16.04.1 | 52.3 | generic, lowlatency |

References: CVE-2019-11477, CVE-2019-11478

-- ubuntu-security-announce mailing list ubuntu-security-announce@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-security-announce . Description:

The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.

Bug Fix(es):

kernel-rt: update to the RHEL8.0.z batch#1 source tree (BZ#1704955)
These packages include redhat-release-virtualization-host, ovirt-node, and rhev-hypervisor. RHVH features a Cockpit user interface for monitoring the host's resources and performing administrative tasks.

The following packages have been upgraded to a later upstream version: redhat-release-virtualization-host (4.3.4), redhat-virtualization-host (4.3.4). # Advisory

ID: NFLX-2019-001

Title: Linux and FreeBSD Kernel: Multiple TCP-based remote denial of service vulnerabilities

Release Date: 2019-06-17

Severity: Critical

Overview:

Netflix has identified several TCP networking vulnerabilities in FreeBSD and Linux kernels.

The vulnerabilities specifically relate to the minimum segment size (MSS) and TCP Selective Acknowledgement (SACK) capabilities. The most serious, dubbed “SACK Panic,” allows a remotely-triggered kernel panic on recent Linux kernels.

There are patches that address most of these vulnerabilities. If patches can not be applied, certain mitigations will be effective. We recommend that affected parties enact one of those described below, based on their environment.

Details:

1: CVE-2019-11477: SACK Panic (Linux >= 2.6.29)

Description: A sequence of SACKs may be crafted such that one can trigger an integer overflow, leading to a kernel panic.

Fix: Apply the patch PATCH_net_1_4.patch. Additionally, versions of the Linux kernel up to, and including, 4.14 require a second patch PATCH_net_1a.patch.

Workaround #1: Block connections with a low MSS using one of the supplied filters. (The values in the filters are examples. You can apply a higher or lower limit, as appropriate for your environment.) Note that these filters may break legitimate connections which rely on a low MSS. Also, note that this mitigation is only effective if TCP probing is disabled (that is, the net.ipv4.tcp_mtu_probing sysctl is set to 0, which appears to be the default value for that sysctl).

Workaround #2: Disable SACK processing (/proc/sys/net/ipv4/tcp_sack set to 0).

(Note that either workaround should be sufficient on its own. It is not necessary to apply both workarounds.)

2: CVE-2019-11478: SACK Slowness (Linux < 4.15) or Excess Resource Usage (all Linux versions)

Description: It is possible to send a crafted sequence of SACKs which will fragment the TCP retransmission queue. On Linux kernels prior to 4.15, an attacker may be able to further exploit the fragmented queue to cause an expensive linked-list walk for subsequent SACKs received for that same TCP connection.

Fix: Apply the patch PATCH_net_2_4.patch

Workaround #1: Block connections with a low MSS using one of the supplied filters. (The values in the filters are examples. You can apply a higher or lower limit, as appropriate for your environment.) Note that these filters may break legitimate connections which rely on a low MSS. Also, note that this mitigation is only effective if TCP probing is disabled (that is, the net.ipv4.tcp_mtu_probing sysctl is set to 0, which appears to be the default value for that sysctl).

Workaround #2: Disable SACK processing (/proc/sys/net/ipv4/tcp_sack set to 0).

(Note that either workaround should be sufficient on its own. It is not necessary to apply both workarounds.)

3: CVE-2019-5599: SACK Slowness (FreeBSD 12 using the RACK TCP Stack)

Description: It is possible to send a crafted sequence of SACKs which will fragment the RACK send map. An attacker may be able to further exploit the fragmented send map to cause an expensive linked-list walk for subsequent SACKs received for that same TCP connection.

Workaround #1: Apply the patch split_limit.patch and set the net.inet.tcp.rack.split_limit sysctl to a reasonable value to limit the size of the SACK table.

Workaround #2: Temporarily disable the RACK TCP stack.

(Note that either workaround should be sufficient on its own. It is not necessary to apply both workarounds.)

4: CVE-2019-11479: Excess Resource Consumption Due to Low MSS Values (all Linux versions)

Description: An attacker can force the Linux kernel to segment its responses into multiple TCP segments, each of which contains only 8 bytes of data. This drastically increases the bandwidth required to deliver the same amount of data. Further, it consumes additional resources (CPU and NIC processing power). This attack requires continued effort from the attacker and the impacts will end shortly after the attacker stops sending traffic.

Fix: Two patches PATCH_net_3_4.patch and PATCH_net_4_4.patch add a sysctl which enforces a minimum MSS, set by the net.ipv4.tcp_min_snd_mss sysctl. This lets an administrator enforce a minimum MSS appropriate for their applications.

Workaround: Block connections with a low MSS using one of the supplied filters. (The values in the filters are examples. You can apply a higher or lower limit, as appropriate for your environment.) Note that these filters may break legitimate connections which rely on a low MSS. Also, note that this mitigation is only effective if TCP probing is disabled (that is, the net.ipv4.tcp_mtu_probing sysctl is set to 0, which appears to be the default value for that sysctl).

Note:

Good system and application coding and configuration practices (limiting write buffers to the necessary level, monitoring connection memory consumption via SO_MEMINFO, and aggressively closing misbehaving connections) can help to limit the impact of attacks against these kinds of vulnerabilities.

Acknowledgments:

Originally reported by Jonathan Looney.

We thank Eric Dumazet for providing Linux fixes and support.

We thank Bruce Curtis for providing the Linux filters.

We thank Jonathan Lemon and Alexey Kodanev for helping to improve the Linux patches.

We gratefully acknowledge the assistance of Tyler Hicks in testing fixes, refining the information about vulnerable versions, and providing assistance during the disclosure process. 6.6) - x86_64

Bug Fix(es):

MDS mitigations not enabled on Intel Skylake CPUs (BZ#1713026)
[RHEL6] md_clear flag missing from /proc/cpuinfo (BZ#1713029)
RHEL6 kernel does not disable SMT with mds=full,nosmt (BZ#1713044)

4

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    "data": "Jonathan Looney discovered that the TCP retransmission queue implementation in tcp_fragment in the Linux kernel could be fragmented when handling certain TCP Selective Acknowledgment (SACK) sequences. A remote attacker could use this to cause a denial of service. This has been fixed in stable kernel releases 4.4.182, 4.9.182, 4.14.127, 4.19.52, 5.1.11, and is fixed in commit f070ef2ac66716357066b683fb0baf55f8191a2e. Linux Kernel Contains a resource exhaustion vulnerability.Service operation interruption (DoS) There is a possibility of being put into a state. This vulnerability stems from improper management of system resources (such as memory, disk space, files, etc.) by network systems or products. A successful exploit could cause the targeted system to crash, resulting in a DoS condition. \nProof-of-concept (PoC) code that demonstrates an exploit of this vulnerability is publicly available. \nKernel.org has confirmed the vulnerability and released software updates. -----BEGIN PGP SIGNED MESSAGE-----\nHash: SHA256\n\n====================================================================                   \nRed Hat Security Advisory\n\nSynopsis:          Important: kernel security, bug fix, and enhancement update\nAdvisory ID:       RHSA-2019:1483-01\nProduct:           Red Hat Enterprise Linux\nAdvisory URL:      https://access.redhat.com/errata/RHSA-2019:1483\nIssue date:        2019-06-17\nCVE Names:         CVE-2018-7566 CVE-2018-1000004 CVE-2019-11477\n                   CVE-2019-11478 CVE-2019-11479\n====================================================================\n1. Summary:\n\nAn update for kernel is now available for Red Hat Enterprise Linux 7.4\nExtended Update Support. \n\nRed Hat Product Security has rated this update as having a security impact\nof Important. A Common Vulnerability Scoring System (CVSS) base score,\nwhich gives a detailed severity rating, is available for each vulnerability\nfrom the CVE link(s) in the References section. \n\n2. Relevant releases/architectures:\n\nRed Hat Enterprise Linux ComputeNode EUS (v. 7.4) - noarch, x86_64\nRed Hat Enterprise Linux ComputeNode Optional EUS (v. 7.4) - x86_64\nRed Hat Enterprise Linux Server EUS (v. 7.4) - noarch, ppc64, ppc64le, s390x, x86_64\nRed Hat Enterprise Linux Server Optional EUS (v. 7.4) - ppc64, ppc64le, x86_64\n\n3. Description:\n\nThe kernel packages contain the Linux kernel, the core of any Linux\noperating system. While processing SACK segments, the Linux kernel\u0027s socket buffer\n(SKB) data structure becomes fragmented. To efficiently process SACK blocks, the Linux\nkernel merges multiple fragmented SKBs into one, potentially overflowing\nthe variable holding the number of segments. A remote attacker could use\nthis flaw to crash the Linux kernel by sending a crafted sequence of SACK\nsegments on a TCP connection with small value of TCP MSS, resulting in a\ndenial of service (DoS). (CVE-2019-11477)\n\n* kernel: race condition in snd_seq_write() may lead to UAF or OOB-access\n(CVE-2018-7566)\n\n* kernel: Race condition in sound system can lead to denial of service\n(CVE-2018-1000004)\n\n* Kernel: tcp: excessive resource consumption while processing SACK blocks\nallows remote denial of service (CVE-2019-11478)\n\n* Kernel: tcp: excessive resource consumption for TCP connections with low\nMSS allows remote denial of service (CVE-2019-11479)\n\nFor more details about the security issue(s), including the impact, a CVSS\nscore, acknowledgments, and other related information, refer to the CVE\npage(s) listed in the References section. \n\nBug Fix(es):\n\n* Mistmach between \u0027tty-\u003etermios-\u003ec_lflag\u0027 and \u0027ldata-\u003eicanon\u0027 for \u0027ICANON\u0027\n(BZ#1708061)\n\n* RHEL7: rwsem reader/writer mutual exclusion guarantee may not work\n(BZ#1709702)\n\n* hardened usercopy is causing crash (BZ#1712311)\n\n* [RHEL7] md_clear flag missing from /proc/cpuinfo on late microcode update\n(BZ#1712991)\n\n* [RHEL7] MDS mitigations are not enabled after double microcode update\n(BZ#1712996)\n\n* WARNING: CPU: 0 PID: 0 at kernel/jump_label.c:90\n__static_key_slow_dec+0xa6/0xb0 (BZ#1713002)\n\n* [debug kernel] [x86_64]INFO: possible circular locking dependency\ndetected (BZ#1715326)\n\n* RHEL-7.7: tty: termios_rwsem possible deadlock (BZ#1715329)\n\nEnhancement(s):\n\n* [MCHP 7.7 FEAT] Update smartpqi driver to latest upstream (BZ#1709467)\n\n4. Solution:\n\nFor details on how to apply this update, which includes the changes\ndescribed in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258\n\nThe system must be rebooted for this update to take effect. \n\n5. Bugs fixed (https://bugzilla.redhat.com/):\n\n1535315 - CVE-2018-1000004 kernel: Race condition in sound system can lead to denial of service\n1550142 - CVE-2018-7566 kernel: race condition in snd_seq_write() may lead to UAF or OOB-access\n1719123 - CVE-2019-11477 Kernel: tcp: integer overflow while processing SACK blocks allows remote denial of service\n1719128 - CVE-2019-11478 Kernel: tcp: excessive resource consumption while processing SACK blocks allows remote denial of service\n1719129 - CVE-2019-11479 Kernel: tcp: excessive resource consumption for TCP connections with low MSS allows remote denial of service\n\n6. Package List:\n\nRed Hat Enterprise Linux ComputeNode EUS (v. 7.4):\n\nSource:\nkernel-3.10.0-693.50.3.el7.src.rpm\n\nnoarch:\nkernel-abi-whitelists-3.10.0-693.50.3.el7.noarch.rpm\nkernel-doc-3.10.0-693.50.3.el7.noarch.rpm\n\nx86_64:\nkernel-3.10.0-693.50.3.el7.x86_64.rpm\nkernel-debug-3.10.0-693.50.3.el7.x86_64.rpm\nkernel-debug-debuginfo-3.10.0-693.50.3.el7.x86_64.rpm\nkernel-debug-devel-3.10.0-693.50.3.el7.x86_64.rpm\nkernel-debuginfo-3.10.0-693.50.3.el7.x86_64.rpm\nkernel-debuginfo-common-x86_64-3.10.0-693.50.3.el7.x86_64.rpm\nkernel-devel-3.10.0-693.50.3.el7.x86_64.rpm\nkernel-headers-3.10.0-693.50.3.el7.x86_64.rpm\nkernel-tools-3.10.0-693.50.3.el7.x86_64.rpm\nkernel-tools-debuginfo-3.10.0-693.50.3.el7.x86_64.rpm\nkernel-tools-libs-3.10.0-693.50.3.el7.x86_64.rpm\nperf-3.10.0-693.50.3.el7.x86_64.rpm\nperf-debuginfo-3.10.0-693.50.3.el7.x86_64.rpm\npython-perf-3.10.0-693.50.3.el7.x86_64.rpm\npython-perf-debuginfo-3.10.0-693.50.3.el7.x86_64.rpm\n\nRed Hat Enterprise Linux ComputeNode Optional EUS (v. 7.4):\n\nx86_64:\nkernel-debug-debuginfo-3.10.0-693.50.3.el7.x86_64.rpm\nkernel-debuginfo-3.10.0-693.50.3.el7.x86_64.rpm\nkernel-debuginfo-common-x86_64-3.10.0-693.50.3.el7.x86_64.rpm\nkernel-tools-debuginfo-3.10.0-693.50.3.el7.x86_64.rpm\nkernel-tools-libs-devel-3.10.0-693.50.3.el7.x86_64.rpm\nperf-debuginfo-3.10.0-693.50.3.el7.x86_64.rpm\npython-perf-debuginfo-3.10.0-693.50.3.el7.x86_64.rpm\n\nRed Hat Enterprise Linux Server EUS (v. 7.4):\n\nSource:\nkernel-3.10.0-693.50.3.el7.src.rpm\n\nnoarch:\nkernel-abi-whitelists-3.10.0-693.50.3.el7.noarch.rpm\nkernel-doc-3.10.0-693.50.3.el7.noarch.rpm\n\nppc64:\nkernel-3.10.0-693.50.3.el7.ppc64.rpm\nkernel-bootwrapper-3.10.0-693.50.3.el7.ppc64.rpm\nkernel-debug-3.10.0-693.50.3.el7.ppc64.rpm\nkernel-debug-debuginfo-3.10.0-693.50.3.el7.ppc64.rpm\nkernel-debug-devel-3.10.0-693.50.3.el7.ppc64.rpm\nkernel-debuginfo-3.10.0-693.50.3.el7.ppc64.rpm\nkernel-debuginfo-common-ppc64-3.10.0-693.50.3.el7.ppc64.rpm\nkernel-devel-3.10.0-693.50.3.el7.ppc64.rpm\nkernel-headers-3.10.0-693.50.3.el7.ppc64.rpm\nkernel-tools-3.10.0-693.50.3.el7.ppc64.rpm\nkernel-tools-debuginfo-3.10.0-693.50.3.el7.ppc64.rpm\nkernel-tools-libs-3.10.0-693.50.3.el7.ppc64.rpm\nperf-3.10.0-693.50.3.el7.ppc64.rpm\nperf-debuginfo-3.10.0-693.50.3.el7.ppc64.rpm\npython-perf-3.10.0-693.50.3.el7.ppc64.rpm\npython-perf-debuginfo-3.10.0-693.50.3.el7.ppc64.rpm\n\nppc64le:\nkernel-3.10.0-693.50.3.el7.ppc64le.rpm\nkernel-bootwrapper-3.10.0-693.50.3.el7.ppc64le.rpm\nkernel-debug-3.10.0-693.50.3.el7.ppc64le.rpm\nkernel-debug-debuginfo-3.10.0-693.50.3.el7.ppc64le.rpm\nkernel-debuginfo-3.10.0-693.50.3.el7.ppc64le.rpm\nkernel-debuginfo-common-ppc64le-3.10.0-693.50.3.el7.ppc64le.rpm\nkernel-devel-3.10.0-693.50.3.el7.ppc64le.rpm\nkernel-headers-3.10.0-693.50.3.el7.ppc64le.rpm\nkernel-tools-3.10.0-693.50.3.el7.ppc64le.rpm\nkernel-tools-debuginfo-3.10.0-693.50.3.el7.ppc64le.rpm\nkernel-tools-libs-3.10.0-693.50.3.el7.ppc64le.rpm\nperf-3.10.0-693.50.3.el7.ppc64le.rpm\nperf-debuginfo-3.10.0-693.50.3.el7.ppc64le.rpm\npython-perf-3.10.0-693.50.3.el7.ppc64le.rpm\npython-perf-debuginfo-3.10.0-693.50.3.el7.ppc64le.rpm\n\ns390x:\nkernel-3.10.0-693.50.3.el7.s390x.rpm\nkernel-debug-3.10.0-693.50.3.el7.s390x.rpm\nkernel-debug-debuginfo-3.10.0-693.50.3.el7.s390x.rpm\nkernel-debug-devel-3.10.0-693.50.3.el7.s390x.rpm\nkernel-debuginfo-3.10.0-693.50.3.el7.s390x.rpm\nkernel-debuginfo-common-s390x-3.10.0-693.50.3.el7.s390x.rpm\nkernel-devel-3.10.0-693.50.3.el7.s390x.rpm\nkernel-headers-3.10.0-693.50.3.el7.s390x.rpm\nkernel-kdump-3.10.0-693.50.3.el7.s390x.rpm\nkernel-kdump-debuginfo-3.10.0-693.50.3.el7.s390x.rpm\nkernel-kdump-devel-3.10.0-693.50.3.el7.s390x.rpm\nperf-3.10.0-693.50.3.el7.s390x.rpm\nperf-debuginfo-3.10.0-693.50.3.el7.s390x.rpm\npython-perf-3.10.0-693.50.3.el7.s390x.rpm\npython-perf-debuginfo-3.10.0-693.50.3.el7.s390x.rpm\n\nx86_64:\nkernel-3.10.0-693.50.3.el7.x86_64.rpm\nkernel-debug-3.10.0-693.50.3.el7.x86_64.rpm\nkernel-debug-debuginfo-3.10.0-693.50.3.el7.x86_64.rpm\nkernel-debug-devel-3.10.0-693.50.3.el7.x86_64.rpm\nkernel-debuginfo-3.10.0-693.50.3.el7.x86_64.rpm\nkernel-debuginfo-common-x86_64-3.10.0-693.50.3.el7.x86_64.rpm\nkernel-devel-3.10.0-693.50.3.el7.x86_64.rpm\nkernel-headers-3.10.0-693.50.3.el7.x86_64.rpm\nkernel-tools-3.10.0-693.50.3.el7.x86_64.rpm\nkernel-tools-debuginfo-3.10.0-693.50.3.el7.x86_64.rpm\nkernel-tools-libs-3.10.0-693.50.3.el7.x86_64.rpm\nperf-3.10.0-693.50.3.el7.x86_64.rpm\nperf-debuginfo-3.10.0-693.50.3.el7.x86_64.rpm\npython-perf-3.10.0-693.50.3.el7.x86_64.rpm\npython-perf-debuginfo-3.10.0-693.50.3.el7.x86_64.rpm\n\nRed Hat Enterprise Linux Server Optional EUS (v. 7.4):\n\nppc64:\nkernel-debug-debuginfo-3.10.0-693.50.3.el7.ppc64.rpm\nkernel-debuginfo-3.10.0-693.50.3.el7.ppc64.rpm\nkernel-debuginfo-common-ppc64-3.10.0-693.50.3.el7.ppc64.rpm\nkernel-tools-debuginfo-3.10.0-693.50.3.el7.ppc64.rpm\nkernel-tools-libs-devel-3.10.0-693.50.3.el7.ppc64.rpm\nperf-debuginfo-3.10.0-693.50.3.el7.ppc64.rpm\npython-perf-debuginfo-3.10.0-693.50.3.el7.ppc64.rpm\n\nppc64le:\nkernel-debug-debuginfo-3.10.0-693.50.3.el7.ppc64le.rpm\nkernel-debug-devel-3.10.0-693.50.3.el7.ppc64le.rpm\nkernel-debuginfo-3.10.0-693.50.3.el7.ppc64le.rpm\nkernel-debuginfo-common-ppc64le-3.10.0-693.50.3.el7.ppc64le.rpm\nkernel-tools-debuginfo-3.10.0-693.50.3.el7.ppc64le.rpm\nkernel-tools-libs-devel-3.10.0-693.50.3.el7.ppc64le.rpm\nperf-debuginfo-3.10.0-693.50.3.el7.ppc64le.rpm\npython-perf-debuginfo-3.10.0-693.50.3.el7.ppc64le.rpm\n\nx86_64:\nkernel-debug-debuginfo-3.10.0-693.50.3.el7.x86_64.rpm\nkernel-debuginfo-3.10.0-693.50.3.el7.x86_64.rpm\nkernel-debuginfo-common-x86_64-3.10.0-693.50.3.el7.x86_64.rpm\nkernel-tools-debuginfo-3.10.0-693.50.3.el7.x86_64.rpm\nkernel-tools-libs-devel-3.10.0-693.50.3.el7.x86_64.rpm\nperf-debuginfo-3.10.0-693.50.3.el7.x86_64.rpm\npython-perf-debuginfo-3.10.0-693.50.3.el7.x86_64.rpm\n\nThese packages are GPG signed by Red Hat for security.  Our key and\ndetails on how to verify the signature are available from\nhttps://access.redhat.com/security/team/key/\n\n7. References:\n\nhttps://access.redhat.com/security/cve/CVE-2018-7566\nhttps://access.redhat.com/security/cve/CVE-2018-1000004\nhttps://access.redhat.com/security/cve/CVE-2019-11477\nhttps://access.redhat.com/security/cve/CVE-2019-11478\nhttps://access.redhat.com/security/cve/CVE-2019-11479\nhttps://access.redhat.com/security/updates/classification/#important\nhttps://access.redhat.com/security/vulnerabilities/tcpsack\n\n8. Contact:\n\nThe Red Hat security contact is \u003csecalert@redhat.com\u003e. More contact\ndetails at https://access.redhat.com/security/team/contact/\n\nCopyright 2019 Red Hat, Inc. \n-----BEGIN PGP SIGNATURE-----\nVersion: GnuPG v1\n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\nLbgoNJu99kM=aVva\n-----END PGP SIGNATURE-----\n\n--\nRHSA-announce mailing list\nRHSA-announce@redhat.com\nhttps://www.redhat.com/mailman/listinfo/rhsa-announce\n. ==========================================================================\nKernel Live Patch Security Notice 0052-1\nJune 18, 2019\n\nlinux vulnerability\n==========================================================================\n\nA security issue affects these releases of Ubuntu:\n\n| Series           | Base kernel  | Arch     | flavors          |\n|------------------+--------------+----------+------------------|\n| Ubuntu 18.04 LTS | 4.15.0       | amd64    | generic          |\n| Ubuntu 18.04 LTS | 4.15.0       | amd64    | lowlatency       |\n| Ubuntu 16.04 LTS | 4.4.0        | amd64    | generic          |\n| Ubuntu 16.04 LTS | 4.4.0        | amd64    | lowlatency       |\n\nSummary:\n\nSeveral security issues were fixed in the kernel. (CVE-2019-11478)\n\nUpdate instructions:\n\nThe problem can be corrected by updating your livepatches to the following\nversions:\n\n| Kernel                   | Version  | flavors                  |\n|--------------------------+----------+--------------------------|\n| 4.4.0-148.174            | 52.3     | generic, lowlatency      |\n| 4.4.0-150.176            | 52.3     | generic, lowlatency      |\n| 4.15.0-50.54             | 52.3     | generic, lowlatency      |\n| 4.15.0-50.54~16.04.1     | 52.3     | generic, lowlatency      |\n| 4.15.0-51.55             | 52.3     | generic, lowlatency      |\n| 4.15.0-51.55~16.04.1     | 52.3     | generic, lowlatency      |\n\nReferences:\n  CVE-2019-11477, CVE-2019-11478\n\n\n-- \nubuntu-security-announce mailing list\nubuntu-security-announce@lists.ubuntu.com\nModify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-security-announce\n. Description:\n\nThe kernel-rt packages provide the Real Time Linux Kernel, which enables\nfine-tuning for systems with extremely high determinism requirements. \n\nBug Fix(es):\n\n* kernel-rt: update to the RHEL8.0.z batch#1 source tree (BZ#1704955)\n\n4. These packages include redhat-release-virtualization-host,\novirt-node, and rhev-hypervisor. RHVH features a Cockpit user\ninterface for monitoring the host\u0027s resources and performing administrative\ntasks. \n\nThe following packages have been upgraded to a later upstream version:\nredhat-release-virtualization-host (4.3.4), redhat-virtualization-host\n(4.3.4). # Advisory\n###### ID: NFLX-2019-001\n\n###### Title: Linux and FreeBSD Kernel: Multiple TCP-based remote denial of service vulnerabilities\n\n###### Release Date: 2019-06-17\n\n###### Severity: Critical\n\n### Overview:\n\nNetflix has identified several TCP networking vulnerabilities in FreeBSD and Linux kernels. \n\nThe vulnerabilities specifically relate to the minimum segment size (MSS) and TCP Selective Acknowledgement (SACK) capabilities. The most serious, dubbed _\u201cSACK Panic_,\u201d allows a remotely-triggered kernel panic on recent Linux kernels. \n\nThere are patches that address most of these vulnerabilities. If patches can not be applied, certain mitigations will be effective. We recommend that affected parties enact one of those described below, based on their environment. \n\n### Details:\n\n#### 1: [CVE-2019-11477](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-11477): SACK Panic (Linux \u003e= 2.6.29)\n\n__Description:__\nA sequence of SACKs may be crafted such that one can trigger an integer overflow, leading to a kernel panic. \n\n__Fix:__ Apply the patch [PATCH_net_1_4.patch](2019-001/PATCH_net_1_4.patch). Additionally, versions of the Linux kernel up to, and including, 4.14 require a second patch [PATCH_net_1a.patch](2019-001/PATCH_net_1a.patch). \n\n__Workaround #1:__ Block connections with a low MSS using one of the supplied [filters](2019-001/block-low-mss/README.md). (The values in the filters are examples. You can apply a higher or lower limit, as appropriate for your environment.) Note that these filters may break legitimate connections which rely on a low MSS. Also, note that this mitigation is only effective if TCP probing is disabled (that is, the `net.ipv4.tcp_mtu_probing` sysctl is set to 0, which appears to be the default value for that sysctl). \n\n__Workaround #2:__ Disable SACK processing (`/proc/sys/net/ipv4/tcp_sack` set to 0). \n\n(Note that either workaround should be sufficient on its own. It is not necessary to apply both workarounds.)\n\n\n### 2: [CVE-2019-11478](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-11478): SACK Slowness (Linux \u003c 4.15) or Excess Resource Usage (all Linux versions)\n\n__Description:__ It is possible to send a crafted sequence of SACKs which will fragment the TCP retransmission queue. On Linux kernels prior to 4.15, an attacker may be able to further exploit the fragmented queue to cause an expensive linked-list walk for subsequent SACKs received for that same TCP connection. \n\n__Fix:__ Apply the patch [PATCH_net_2_4.patch](2019-001/PATCH_net_2_4.patch)\n\n__Workaround #1:__ Block connections with a low MSS using one of the supplied [filters](2019-001/block-low-mss/README.md). (The values in the filters are examples. You can apply a higher or lower limit, as appropriate for your environment.) Note that these filters may break legitimate connections which rely on a low MSS. Also, note that this mitigation is only effective if TCP probing is disabled (that is, the `net.ipv4.tcp_mtu_probing` sysctl is set to 0, which appears to be the default value for that sysctl). \n\n__Workaround #2:__ Disable SACK processing (`/proc/sys/net/ipv4/tcp_sack` set to 0). \n\n(Note that either workaround should be sufficient on its own. It is not necessary to apply both workarounds.)\n\n\n### 3: [CVE-2019-5599](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-5599): SACK Slowness (FreeBSD 12 using the RACK TCP Stack)\n\n__Description:__ It is possible to send a crafted sequence of SACKs which will fragment the RACK send map. An attacker may be able to further exploit the fragmented send map to cause an expensive linked-list walk for subsequent SACKs received for that same TCP connection. \n\n__Workaround #1:__ Apply the patch [split_limit.patch](2019-001/split_limit.patch) and set the `net.inet.tcp.rack.split_limit` sysctl to a reasonable value to limit the size of the SACK table. \n\n__Workaround #2:__ Temporarily disable the RACK TCP stack. \n\n(Note that either workaround should be sufficient on its own. It is not necessary to apply both workarounds.)\n\n\n### 4: [CVE-2019-11479](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-11479): Excess Resource Consumption Due to Low MSS Values (all Linux versions)\n\n__Description:__ An attacker can force the Linux kernel to segment its responses into multiple TCP segments, each of which contains only 8 bytes of data. This drastically increases the bandwidth required to deliver the same amount of data. Further, it consumes additional resources (CPU and NIC processing power). This attack requires continued effort from the attacker and the impacts will end shortly after the attacker stops sending traffic. \n\n__Fix:__ Two patches [PATCH_net_3_4.patch](2019-001/PATCH_net_3_4.patch) and [PATCH_net_4_4.patch](2019-001/PATCH_net_4_4.patch) add a sysctl which enforces a minimum MSS, set by the `net.ipv4.tcp_min_snd_mss` sysctl. This lets an administrator enforce a minimum MSS appropriate for their applications. \n\n__Workaround:__ Block connections with a low MSS using one of the supplied [filters](2019-001/block-low-mss/README.md). (The values in the filters are examples. You can apply a higher or lower limit, as appropriate for your environment.) Note that these filters may break legitimate connections which rely on a low MSS. Also, note that this mitigation is only effective if TCP probing is disabled (that is, the `net.ipv4.tcp_mtu_probing` sysctl is set to 0, which appears to be the default value for that sysctl). \n\n\n### Note:\nGood system and application coding and configuration practices (limiting write buffers to the necessary level, monitoring connection memory consumption via SO_MEMINFO, and aggressively closing misbehaving connections) can help to limit the impact of attacks against these kinds of vulnerabilities. \n\n\n## Acknowledgments:\nOriginally reported by Jonathan Looney. \n\nWe thank Eric Dumazet for providing Linux fixes and support. \n\nWe thank Bruce Curtis for providing the Linux filters. \n\nWe thank Jonathan Lemon and Alexey Kodanev for helping to improve the Linux patches. \n\nWe gratefully acknowledge the assistance of Tyler Hicks in testing fixes, refining the information about vulnerable versions, and providing assistance during the disclosure process. 6.6) - x86_64\n\n3. \n\nBug Fix(es):\n\n* MDS mitigations not enabled on Intel Skylake CPUs (BZ#1713026)\n\n* [RHEL6] md_clear flag missing from /proc/cpuinfo (BZ#1713029)\n\n* RHEL6 kernel does not disable SMT with mds=full,nosmt (BZ#1713044)\n\n4",
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CVE-2025-8711 (GCVE-0-2025-8711)

Vulnerability from nvd – Published: 2025-09-09 15:17 – Updated: 2025-09-09 17:32

Summary

CSRF in Ivanti Connect Secure before 22.7R2.9 or 22.8R2, Ivanti Policy Secure before 22.7R1.6, Ivanti ZTA Gateway before 2.8R2.3-723 and Ivanti Neurons for Secure Access before 22.8R1.4 (Fix deployed on 02-Aug-2025) allows a remote unauthenticated attacker to execute limited actions on behalf of the victim user. User interaction is required.

Severity ?

5.4 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

CWE

CWE-352 - Cross-Site Request Forgery (CSRF)

Assigner

ivanti

References

URL

Tags

Impacted products

Vendor

Product

Version

Unaffected: 22.7R2.9
Unaffected: 22.8R2

Ivanti	Policy Secure	Unaffected: 22.7R1.6
Ivanti	ZTA Gateway	Unaffected: 2.8R2.3-723
Ivanti	Neurons for Secure	Unaffected: 22.8R1.4 (Fix deployed on 02-Aug-2025)

Show details on NVD website

To clipboard

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CVE-2025-55148 (GCVE-0-2025-55148)

Vulnerability from nvd – Published: 2025-09-09 15:37 – Updated: 2025-09-09 17:31

Summary

Missing authorization in Ivanti Connect Secure before 22.7R2.9 or 22.8R2, Ivanti Policy Secure before 22.7R1.6, Ivanti ZTA Gateway before 2.8R2.3-723 and Ivanti Neurons for Secure Access before 22.8R1.4 (Fix deployed on 02-Aug-2025) allows a remote authenticated attacker with read-only admin privileges to configure restricted settings.

Severity ?

7.6 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H

CWE

CWE-862 - Missing Authorization

Assigner

ivanti

References

URL

Tags

Impacted products

Vendor

Product

Version

Unaffected: 22.7R2.9
Unaffected: 22.8R2

Ivanti	Policy Secure	Unaffected: 22.7R1.6
Ivanti	ZTA Gateway	Unaffected: 2.8R2.3-723
Ivanti	Neurons for Secure Access	Unaffected: 22.8R1.4 (Fix deployed on 02-Aug-2025)

Show details on NVD website

To clipboard

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CVE-2025-55147 (GCVE-0-2025-55147)

Vulnerability from nvd – Published: 2025-09-09 15:32 – Updated: 2025-09-10 03:56

Summary

CSRF in Ivanti Connect Secure before 22.7R2.9 or 22.8R2, Ivanti Policy Secure before 22.7R1.6, Ivanti ZTA Gateway before 2.8R2.3-723 and Ivanti Neurons for Secure Access before 22.8R1.4 (Fix deployed on 02-Aug-2025) allows a remote unauthenticated attacker to execute sensitive actions on behalf of the victim user. User interaction is required

Severity ?

8.8 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CWE

CWE-352 - Cross-Site Request Forgery (CSRF)

Assigner

ivanti

References

URL

Tags

Impacted products

Vendor

Product

Version

Unaffected: 22.7R2.9
Unaffected: 22.8R2

Ivanti	Policy Secure	Unaffected: 22.7R1.6
Ivanti	ZTA Gateway	Unaffected: 2.8R2.3-723
Ivanti	Neurons for Secure Access	Unaffected: 22.8R1.4 (Fix deployed on 02-Aug-2025)

Show details on NVD website

To clipboard

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CVE-2025-55146 (GCVE-0-2025-55146)

Vulnerability from nvd – Published: 2025-09-09 15:28 – Updated: 2025-09-09 17:32

Summary

An unchecked return value in Ivanti Connect Secure before 22.7R2.9 or 22.8R2, Ivanti Policy Secure before 22.7R1.6, Ivanti ZTA Gateway before 2.8R2.3-723 and Ivanti Neurons for Secure Access before 22.8R1.4 (Fix deployed on 02-Aug-2025) allows a remote authenticated attacker with admin privileges to trigger a denial of service.

Severity ?

4.9 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

CWE

CWE-252 - Unchecked Return Value

Assigner

ivanti

References

URL

Tags

Impacted products

Vendor

Product

Version

Unaffected: 22.7R2.9
Unaffected: 22.8R2

Ivanti	Policy Secure	Unaffected: 22.7R1.6
Ivanti	ZTA Gateway	Unaffected: 2.8R2.3-723
Ivanti	Neurons for Secure Access	Unaffected: 22.8R1.4 (Fix deployed on 02-Aug-2025)

Show details on NVD website

To clipboard

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CVE-2025-55144 (GCVE-0-2025-55144)

Vulnerability from nvd – Published: 2025-09-09 15:55 – Updated: 2025-09-09 17:31

Summary

Missing authorization in Ivanti Connect Secure before 22.7R2.9 or 22.8R2, Ivanti Policy Secure before 22.7R1.6, Ivanti ZTA Gateway before 2.8R2.3-723 and Ivanti Neurons for Secure Access before 22.8R1.4 (Fix deployed on 02-Aug-2025) allows a remote authenticated attacker with read-only admin privileges to configure restricted settings.

Severity ?

5.4 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L

CWE

CWE-862 - Missing Authorization

Assigner

ivanti

References

URL

Tags

Impacted products

Vendor

Product

Version

Unaffected: 22.7R2.9
Unaffected: 22.8R2

Ivanti	Policy Secure	Unaffected: 22.7R1.6
Ivanti	ZTA Gateway	Unaffected: 2.8R2.3-723
Ivanti	Neurons for Secure Access	Unaffected: 22.8R1.4 (Fix deployed on 02-Aug-2025)

Show details on NVD website

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CVE-2025-55143 (GCVE-0-2025-55143)

Vulnerability from nvd – Published: 2025-09-09 15:52 – Updated: 2025-09-09 17:31

Summary

Reflected text injection in Ivanti Connect Secure before 22.7R2.9 or 22.8R2, Ivanti Policy Secure before 22.7R1.6, Ivanti ZTA Gateway before 2.8R2.3-723 and Ivanti Neurons for Secure Access before 22.8R1.4 (Fix deployed on 02-Aug-2025) allows a remote unauthenticated attacker to inject arbitrary text into a crafted HTTP response. User interaction is required.

Severity ?

6.1 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CWE

CWE-79 - Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')

Assigner

ivanti

References

URL

Tags

Impacted products

Vendor

Product

Version

Unaffected: 22.7R2.9
Unaffected: 22.8R2

Ivanti	Policy Secure	Unaffected: 22.7R1.6
Ivanti	ZTA Gateway	Unaffected: 2.8R2.3-723
Ivanti	Neurons for Secure Access	Unaffected: 22.8R1.4 (Fix deployed on 02-Aug-2025)

Show details on NVD website

To clipboard

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CVE-2025-55142 (GCVE-0-2025-55142)

Vulnerability from nvd – Published: 2025-09-09 15:49 – Updated: 2025-09-10 03:56

Summary

Missing authorization in Ivanti Connect Secure before 22.7R2.9 or 22.8R2, Ivanti Policy Secure before 22.7R1.6, Ivanti ZTA Gateway before 2.8R2.3-723 and Ivanti Neurons for Secure Access before 22.8R1.4 (Fix deployed on 02-Aug-2025) allows a remote authenticated attacker with read-only admin privileges to configure authentication related settings.

Severity ?

8.8 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE

CWE-862 - Missing Authorization

Assigner

ivanti

References

URL

Tags

Impacted products

Vendor

Product

Version

Unaffected: 22.7R2.9
Unaffected: 22.8R2

Ivanti	Policy Secure	Unaffected: 22.7R1.6
Ivanti	ZTA Gateway	Unaffected: 2.8R2.3-723
Ivanti	Neurons for Secure Access	Unaffected: 22.8R1.4 (Fix deployed on 02-Aug-2025)

Show details on NVD website

To clipboard

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CVE-2025-55141 (GCVE-0-2025-55141)

Vulnerability from nvd – Published: 2025-09-09 15:45 – Updated: 2025-09-10 03:56

Summary

Missing authorization in Ivanti Connect Secure before 22.7R2.9 or 22.8R2, Ivanti Policy Secure before 22.7R1.6, Ivanti ZTA Gateway before 2.8R2.3-723 and Ivanti Neurons for Secure Access before 22.8R1.4 (Fix deployed on 02-Aug-2025) allows a remote authenticated attacker with read-only admin privileges to configure authentication related settings.

Severity ?

8.8 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE

CWE-862 - Missing Authorization

Assigner

ivanti

References

URL

Tags

Impacted products

Vendor

Product

Version

Unaffected: 22.7R2.9
Unaffected: 22.8R2

Ivanti	Policy Secure	Unaffected: 22.7R1.6
Ivanti	ZTA Gateway	Unaffected: 2.8R2.3-723
Ivanti	Neurons for Secure Access	Unaffected: 22.8R1.4 (Fix deployed on 02-Aug-2025)

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CVE-2025-55139 (GCVE-0-2025-55139)

Vulnerability from nvd – Published: 2025-09-09 15:41 – Updated: 2025-09-09 17:31

Summary

SSRF in Ivanti Connect Secure before 22.7R2.9 or 22.8R2, Ivanti Policy Secure before 22.7R1.6, Ivanti ZTA Gateway before 2.8R2.3-723 and Ivanti Neurons for Secure Access before 22.8R1.4 (Fix deployed on 02-Aug-2025) allows a remote authenticated attacker with admin privileges to enumerate internal services.

Severity ?

6.8 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N

CWE

CWE-918 - Server-Side Request Forgery (SSRF)

Assigner

ivanti

References

URL

Tags

Impacted products

Vendor

Product

Version

Unaffected: 22.7R2.9
Unaffected: 22.8R2

Ivanti	Policy Secure	Unaffected: 22.7R1.6
Ivanti	ZTA Gateway	Unaffected: 2.8R2.3-723
Ivanti	Neurons for Secure Access	Unaffected: 22.8R1.4 (Fix deployed on 02-Aug-2025)

Show details on NVD website

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CVE-2025-5468 (GCVE-0-2025-5468)

Vulnerability from nvd – Published: 2025-08-12 15:05 – Updated: 2025-08-12 18:58

Summary

Improper handling of symbolic links in Ivanti Connect Secure before version 22.7R2.8 or 22.8R2, Ivanti Policy Secure before 22.7R1.5, Ivanti ZTA Gateway before 22.8R2.3-723 and Ivanti Neurons for Secure Access before 22.8R1.4 (Fix deployed on 02-Aug-2025) allows a local authenticated attacker to read arbitrary files on disk.

Severity ?

5.5 (Medium)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

CWE

CWE-61 - UNIX Symbolic Link

Assigner

ivanti

References

URL

Tags

Impacted products

Vendor

Product

Version

Unaffected: 22.7R2.8
Unaffected: 22.8R2

Ivanti	Policy Secure	Unaffected: 22.7R1.5
Ivanti	ZTA Gateway	Unaffected: 22.8R2.3-723
Ivanti	Neurons for Secure Access	Unaffected: 22.8R1.4 (Fix deployed on 02-Aug-2025)

Show details on NVD website

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CVE-2025-5466 (GCVE-0-2025-5466)

Vulnerability from nvd – Published: 2025-08-12 15:00 – Updated: 2025-08-12 19:00

Summary

XEE in Ivanti Connect Secure before 22.7R2.8 or 22.8R2, Ivanti Policy Secure before 22.7R1.5, Ivanti ZTA Gateway before 22.8R2.3-723 and Ivanti Neurons for Secure Access before 22.8R1.4 (Fix deployed on 02-Aug-2025) allows a remote authenticated attacker with admin privileges to trigger a denial of service

Severity ?

4.9 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

CWE

CWE-776 - Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion')

Assigner

ivanti

References

URL

Tags

Impacted products

Vendor

Product

Version

Unaffected: 22.7R2.8
Unaffected: 22.8R2

Ivanti	Policy Secure	Unaffected: 22.7R1.5
Ivanti	ZTA Gateway	Unaffected: 22.8R2.3-723
Ivanti	Neurons for Secure Access	Unaffected: 22.8R1.4 (Fix deployed on 02-Aug-2025)

Show details on NVD website

To clipboard

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CVE-2025-5462 (GCVE-0-2025-5462)

Vulnerability from nvd – Published: 2025-08-12 14:56 – Updated: 2025-08-12 15:08

Summary

A heap-based buffer overflow in Ivanti Connect Secure before 22.7R2.8 or 22.8R2, Ivanti Policy Secure before 22.7R1.5, Ivanti ZTA Gateway before 22.8R2.3-723 and Ivanti Neurons for Secure Access before 22.8R1.4 (Fix deployed on 02-Aug-2025) allows a remote unauthenticated attacker to trigger a denial of service.

Severity ?

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE

CWE-122 - Heap-based Buffer Overflow

Assigner

ivanti

References

URL

Tags

Impacted products

Vendor

Product

Version

Unaffected: 22.7R2.8
Unaffected: 22.8R2

Ivanti	Policy Secure	Unaffected: 22.7R1.5
Ivanti	ZTA Gateway	Unaffected: 22.8R2.3-723
Ivanti	Neurons for Secure Access	Unaffected: 22.8R1.4 (Fix deployed on 02-Aug-2025)

Show details on NVD website

To clipboard

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CVE-2025-5456 (GCVE-0-2025-5456)

Vulnerability from nvd – Published: 2025-08-12 14:50 – Updated: 2025-08-12 15:05

Summary

A buffer over-read vulnerability in Ivanti Connect Secure before 22.7R2.8 or 22.8R2, Ivanti Policy Secure before 22.7R1.5, Ivanti ZTA Gateway before 2.8R2.3-723 and Ivanti Neurons for Secure Access before 22.8R1.4 (Fix deployed on 02-Aug-2025) allows a remote unauthenticated attacker to trigger a denial of service. CWE-125

Severity ?

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE

CWE-125 - Out-of-bounds Read

Assigner

ivanti

References

URL

Tags

Impacted products

Vendor

Product

Version

Unaffected: 22.7R2.8
Unaffected: 22.8R2

Ivanti	Policy Secure	Unaffected: 22.7R1.5
Ivanti	ZTA Gateway	Unaffected: 2.8R2.3-723
Ivanti	Neurons for Secure	Unaffected: 22.8R1.4 (Fix deployed on 02-Aug-2025)

Show details on NVD website

https://forums.ivanti.com/s/article/July-Security…

To clipboard

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CVE-2025-5464 (GCVE-0-2025-5464)

Vulnerability from nvd – Published: 2025-07-08 15:32 – Updated: 2025-07-08 15:57

Summary

Insertion of sensitive information into a log file in Ivanti Connect Secure before version 22.7R2.8 allows a local authenticated attacker to obtain that information.

Severity ?

6.5 (Medium)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

CWE

CWE-532 - Insertion of Sensitive Information into Log File

Assigner

ivanti

References

URL

Tags

Impacted products

	Vendor	Product	Version
	Ivanti	Connect Secure	Unaffected: 22.7R2.8 (custom)

Show details on NVD website

https://forums.ivanti.com/s/article/July-Security…

To clipboard

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CVE-2025-0293 (GCVE-0-2025-0293)

Vulnerability from nvd – Published: 2025-07-08 15:33 – Updated: 2025-07-08 16:02

Summary

CLRF injection in Ivanti Connect Secure before version 22.7R2.8 and Ivanti Policy Secure before version 22.7R1.5 allows a remote authenticated attacker with admin rights to write to a protected configuration file on disk.

Severity ?

6.6 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:L

CWE

CWE-93 - Improper Neutralization of CRLF Sequences ('CRLF Injection')

Assigner

ivanti

References

URL

Tags

Impacted products

Vendor

Product

Version

Unaffected: 22.7R2.8 (custom)

Policy Secure

Unaffected: 22.7R1.5 (custom)

Show details on NVD website

To clipboard

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CVE-2025-55144 (GCVE-0-2025-55144)

Vulnerability from cvelistv5 – Published: 2025-09-09 15:55 – Updated: 2025-09-09 17:31

Summary

Missing authorization in Ivanti Connect Secure before 22.7R2.9 or 22.8R2, Ivanti Policy Secure before 22.7R1.6, Ivanti ZTA Gateway before 2.8R2.3-723 and Ivanti Neurons for Secure Access before 22.8R1.4 (Fix deployed on 02-Aug-2025) allows a remote authenticated attacker with read-only admin privileges to configure restricted settings.

Severity ?

5.4 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L

CWE

CWE-862 - Missing Authorization

Assigner

ivanti

References

URL

Tags

Impacted products

Vendor

Product

Version

Unaffected: 22.7R2.9
Unaffected: 22.8R2

Ivanti	Policy Secure	Unaffected: 22.7R1.6
Ivanti	ZTA Gateway	Unaffected: 2.8R2.3-723
Ivanti	Neurons for Secure Access	Unaffected: 22.8R1.4 (Fix deployed on 02-Aug-2025)

Show details on NVD website

To clipboard

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CVE-2025-55143 (GCVE-0-2025-55143)

Vulnerability from cvelistv5 – Published: 2025-09-09 15:52 – Updated: 2025-09-09 17:31

Summary

Reflected text injection in Ivanti Connect Secure before 22.7R2.9 or 22.8R2, Ivanti Policy Secure before 22.7R1.6, Ivanti ZTA Gateway before 2.8R2.3-723 and Ivanti Neurons for Secure Access before 22.8R1.4 (Fix deployed on 02-Aug-2025) allows a remote unauthenticated attacker to inject arbitrary text into a crafted HTTP response. User interaction is required.

Severity ?

6.1 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CWE

CWE-79 - Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')

Assigner

ivanti

References

URL

Tags

Impacted products

Vendor

Product

Version

Unaffected: 22.7R2.9
Unaffected: 22.8R2

Ivanti	Policy Secure	Unaffected: 22.7R1.6
Ivanti	ZTA Gateway	Unaffected: 2.8R2.3-723
Ivanti	Neurons for Secure Access	Unaffected: 22.8R1.4 (Fix deployed on 02-Aug-2025)

Show details on NVD website

To clipboard

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CVE-2025-55142 (GCVE-0-2025-55142)

Vulnerability from cvelistv5 – Published: 2025-09-09 15:49 – Updated: 2025-09-10 03:56

Summary

Missing authorization in Ivanti Connect Secure before 22.7R2.9 or 22.8R2, Ivanti Policy Secure before 22.7R1.6, Ivanti ZTA Gateway before 2.8R2.3-723 and Ivanti Neurons for Secure Access before 22.8R1.4 (Fix deployed on 02-Aug-2025) allows a remote authenticated attacker with read-only admin privileges to configure authentication related settings.

Severity ?

8.8 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE

CWE-862 - Missing Authorization

Assigner

ivanti

References

URL

Tags

Impacted products

Vendor

Product

Version

Unaffected: 22.7R2.9
Unaffected: 22.8R2

Ivanti	Policy Secure	Unaffected: 22.7R1.6
Ivanti	ZTA Gateway	Unaffected: 2.8R2.3-723
Ivanti	Neurons for Secure Access	Unaffected: 22.8R1.4 (Fix deployed on 02-Aug-2025)

Show details on NVD website

To clipboard

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CVE-2025-55141 (GCVE-0-2025-55141)

Vulnerability from cvelistv5 – Published: 2025-09-09 15:45 – Updated: 2025-09-10 03:56

Summary

Missing authorization in Ivanti Connect Secure before 22.7R2.9 or 22.8R2, Ivanti Policy Secure before 22.7R1.6, Ivanti ZTA Gateway before 2.8R2.3-723 and Ivanti Neurons for Secure Access before 22.8R1.4 (Fix deployed on 02-Aug-2025) allows a remote authenticated attacker with read-only admin privileges to configure authentication related settings.

Severity ?

8.8 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE

CWE-862 - Missing Authorization

Assigner

ivanti

References

URL

Tags

Impacted products

Vendor

Product

Version

Unaffected: 22.7R2.9
Unaffected: 22.8R2

Ivanti	Policy Secure	Unaffected: 22.7R1.6
Ivanti	ZTA Gateway	Unaffected: 2.8R2.3-723
Ivanti	Neurons for Secure Access	Unaffected: 22.8R1.4 (Fix deployed on 02-Aug-2025)

Show details on NVD website

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CVE-2025-55139 (GCVE-0-2025-55139)

Vulnerability from cvelistv5 – Published: 2025-09-09 15:41 – Updated: 2025-09-09 17:31

Summary

SSRF in Ivanti Connect Secure before 22.7R2.9 or 22.8R2, Ivanti Policy Secure before 22.7R1.6, Ivanti ZTA Gateway before 2.8R2.3-723 and Ivanti Neurons for Secure Access before 22.8R1.4 (Fix deployed on 02-Aug-2025) allows a remote authenticated attacker with admin privileges to enumerate internal services.

Severity ?

6.8 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N

CWE

CWE-918 - Server-Side Request Forgery (SSRF)

Assigner

ivanti

References

URL

Tags

Impacted products

Vendor

Product

Version

Unaffected: 22.7R2.9
Unaffected: 22.8R2

Ivanti	Policy Secure	Unaffected: 22.7R1.6
Ivanti	ZTA Gateway	Unaffected: 2.8R2.3-723
Ivanti	Neurons for Secure Access	Unaffected: 22.8R1.4 (Fix deployed on 02-Aug-2025)

Show details on NVD website

To clipboard

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CVE-2025-55148 (GCVE-0-2025-55148)

Vulnerability from cvelistv5 – Published: 2025-09-09 15:37 – Updated: 2025-09-09 17:31

Summary

Missing authorization in Ivanti Connect Secure before 22.7R2.9 or 22.8R2, Ivanti Policy Secure before 22.7R1.6, Ivanti ZTA Gateway before 2.8R2.3-723 and Ivanti Neurons for Secure Access before 22.8R1.4 (Fix deployed on 02-Aug-2025) allows a remote authenticated attacker with read-only admin privileges to configure restricted settings.

Severity ?

7.6 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H

CWE

CWE-862 - Missing Authorization

Assigner

ivanti

References

URL

Tags

Impacted products

Vendor

Product

Version

Unaffected: 22.7R2.9
Unaffected: 22.8R2

Ivanti	Policy Secure	Unaffected: 22.7R1.6
Ivanti	ZTA Gateway	Unaffected: 2.8R2.3-723
Ivanti	Neurons for Secure Access	Unaffected: 22.8R1.4 (Fix deployed on 02-Aug-2025)

Show details on NVD website

To clipboard

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CVE-2025-55147 (GCVE-0-2025-55147)

Vulnerability from cvelistv5 – Published: 2025-09-09 15:32 – Updated: 2025-09-10 03:56

Summary

CSRF in Ivanti Connect Secure before 22.7R2.9 or 22.8R2, Ivanti Policy Secure before 22.7R1.6, Ivanti ZTA Gateway before 2.8R2.3-723 and Ivanti Neurons for Secure Access before 22.8R1.4 (Fix deployed on 02-Aug-2025) allows a remote unauthenticated attacker to execute sensitive actions on behalf of the victim user. User interaction is required

Severity ?

8.8 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CWE

CWE-352 - Cross-Site Request Forgery (CSRF)

Assigner

ivanti

References

URL

Tags

Impacted products

Vendor

Product

Version

Unaffected: 22.7R2.9
Unaffected: 22.8R2

Ivanti	Policy Secure	Unaffected: 22.7R1.6
Ivanti	ZTA Gateway	Unaffected: 2.8R2.3-723
Ivanti	Neurons for Secure Access	Unaffected: 22.8R1.4 (Fix deployed on 02-Aug-2025)

Show details on NVD website

To clipboard

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CVE-2025-55146 (GCVE-0-2025-55146)

Vulnerability from cvelistv5 – Published: 2025-09-09 15:28 – Updated: 2025-09-09 17:32

Summary

An unchecked return value in Ivanti Connect Secure before 22.7R2.9 or 22.8R2, Ivanti Policy Secure before 22.7R1.6, Ivanti ZTA Gateway before 2.8R2.3-723 and Ivanti Neurons for Secure Access before 22.8R1.4 (Fix deployed on 02-Aug-2025) allows a remote authenticated attacker with admin privileges to trigger a denial of service.

Severity ?

4.9 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

CWE

CWE-252 - Unchecked Return Value

Assigner

ivanti

References

URL

Tags

Impacted products

Vendor

Product

Version

Unaffected: 22.7R2.9
Unaffected: 22.8R2

Ivanti	Policy Secure	Unaffected: 22.7R1.6
Ivanti	ZTA Gateway	Unaffected: 2.8R2.3-723
Ivanti	Neurons for Secure Access	Unaffected: 22.8R1.4 (Fix deployed on 02-Aug-2025)

Show details on NVD website

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CVE-2025-8711 (GCVE-0-2025-8711)

Vulnerability from cvelistv5 – Published: 2025-09-09 15:17 – Updated: 2025-09-09 17:32

Summary

CSRF in Ivanti Connect Secure before 22.7R2.9 or 22.8R2, Ivanti Policy Secure before 22.7R1.6, Ivanti ZTA Gateway before 2.8R2.3-723 and Ivanti Neurons for Secure Access before 22.8R1.4 (Fix deployed on 02-Aug-2025) allows a remote unauthenticated attacker to execute limited actions on behalf of the victim user. User interaction is required.

Severity ?

5.4 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

CWE

CWE-352 - Cross-Site Request Forgery (CSRF)

Assigner

ivanti

References

URL

Tags

Impacted products

Vendor

Product

Version

Unaffected: 22.7R2.9
Unaffected: 22.8R2

Ivanti	Policy Secure	Unaffected: 22.7R1.6
Ivanti	ZTA Gateway	Unaffected: 2.8R2.3-723
Ivanti	Neurons for Secure	Unaffected: 22.8R1.4 (Fix deployed on 02-Aug-2025)

Show details on NVD website

To clipboard

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CVE-2025-5468 (GCVE-0-2025-5468)

Vulnerability from cvelistv5 – Published: 2025-08-12 15:05 – Updated: 2025-08-12 18:58

Summary

Improper handling of symbolic links in Ivanti Connect Secure before version 22.7R2.8 or 22.8R2, Ivanti Policy Secure before 22.7R1.5, Ivanti ZTA Gateway before 22.8R2.3-723 and Ivanti Neurons for Secure Access before 22.8R1.4 (Fix deployed on 02-Aug-2025) allows a local authenticated attacker to read arbitrary files on disk.

Severity ?

5.5 (Medium)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

CWE

CWE-61 - UNIX Symbolic Link

Assigner

ivanti

References

URL

Tags

Impacted products

Vendor

Product

Version

Unaffected: 22.7R2.8
Unaffected: 22.8R2

Ivanti	Policy Secure	Unaffected: 22.7R1.5
Ivanti	ZTA Gateway	Unaffected: 22.8R2.3-723
Ivanti	Neurons for Secure Access	Unaffected: 22.8R1.4 (Fix deployed on 02-Aug-2025)

Show details on NVD website

To clipboard

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CVE-2025-5466 (GCVE-0-2025-5466)

Vulnerability from cvelistv5 – Published: 2025-08-12 15:00 – Updated: 2025-08-12 19:00

Summary

XEE in Ivanti Connect Secure before 22.7R2.8 or 22.8R2, Ivanti Policy Secure before 22.7R1.5, Ivanti ZTA Gateway before 22.8R2.3-723 and Ivanti Neurons for Secure Access before 22.8R1.4 (Fix deployed on 02-Aug-2025) allows a remote authenticated attacker with admin privileges to trigger a denial of service

Severity ?

4.9 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

CWE

CWE-776 - Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion')

Assigner

ivanti

References

URL

Tags

Impacted products

Vendor

Product

Version

Unaffected: 22.7R2.8
Unaffected: 22.8R2

Ivanti	Policy Secure	Unaffected: 22.7R1.5
Ivanti	ZTA Gateway	Unaffected: 22.8R2.3-723
Ivanti	Neurons for Secure Access	Unaffected: 22.8R1.4 (Fix deployed on 02-Aug-2025)

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CVE-2025-5462 (GCVE-0-2025-5462)

Vulnerability from cvelistv5 – Published: 2025-08-12 14:56 – Updated: 2025-08-12 15:08

Summary

A heap-based buffer overflow in Ivanti Connect Secure before 22.7R2.8 or 22.8R2, Ivanti Policy Secure before 22.7R1.5, Ivanti ZTA Gateway before 22.8R2.3-723 and Ivanti Neurons for Secure Access before 22.8R1.4 (Fix deployed on 02-Aug-2025) allows a remote unauthenticated attacker to trigger a denial of service.

Severity ?

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE

CWE-122 - Heap-based Buffer Overflow

Assigner

ivanti

References

URL

Tags

Impacted products

Vendor

Product

Version

Unaffected: 22.7R2.8
Unaffected: 22.8R2

Ivanti	Policy Secure	Unaffected: 22.7R1.5
Ivanti	ZTA Gateway	Unaffected: 22.8R2.3-723
Ivanti	Neurons for Secure Access	Unaffected: 22.8R1.4 (Fix deployed on 02-Aug-2025)

Show details on NVD website

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CVE-2025-5456 (GCVE-0-2025-5456)

Vulnerability from cvelistv5 – Published: 2025-08-12 14:50 – Updated: 2025-08-12 15:05

Summary

A buffer over-read vulnerability in Ivanti Connect Secure before 22.7R2.8 or 22.8R2, Ivanti Policy Secure before 22.7R1.5, Ivanti ZTA Gateway before 2.8R2.3-723 and Ivanti Neurons for Secure Access before 22.8R1.4 (Fix deployed on 02-Aug-2025) allows a remote unauthenticated attacker to trigger a denial of service. CWE-125

Severity ?

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE

CWE-125 - Out-of-bounds Read

Assigner

ivanti

References

URL

Tags

Impacted products

Vendor

Product

Version

Unaffected: 22.7R2.8
Unaffected: 22.8R2

Ivanti	Policy Secure	Unaffected: 22.7R1.5
Ivanti	ZTA Gateway	Unaffected: 2.8R2.3-723
Ivanti	Neurons for Secure	Unaffected: 22.8R1.4 (Fix deployed on 02-Aug-2025)

Show details on NVD website