Vulnerability-Lookup

CERTFR-2026-AVI-0782

Vulnerability from certfr_avis - Published: 2026-06-19 - Updated: 2026-06-19

De multiples vulnérabilités ont été découvertes dans le noyau Linux de SUSE. Certaines d'entre elles permettent à un attaquant de provoquer une exécution de code arbitraire, une atteinte à la confidentialité des données et une atteinte à l'intégrité des données.

Solutions

Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).

None

Impacted products

Vendor	Product	Description
SUSE	N/A	SUSE Linux Enterprise Micro for Rancher 5.3
SUSE	N/A	SUSE Linux Enterprise High Performance Computing 15 SP5
SUSE	N/A	SUSE Linux Micro Extras 6.0
SUSE	N/A	SUSE Linux Enterprise Micro 5.3
SUSE	N/A	SUSE Manager Proxy 4.3
SUSE	N/A	SUSE Linux Micro 6.1
SUSE	N/A	SUSE Linux Enterprise High Performance Computing 12 SP5
SUSE	N/A	SUSE Linux Micro 6.0
SUSE	N/A	SUSE Linux Enterprise Server 12 SP5
SUSE	N/A	SUSE Linux Enterprise High Availability Extension 15 SP4
SUSE	N/A	SUSE Linux Enterprise Micro for Rancher 5.4
SUSE	N/A	SUSE Linux Enterprise Live Patching 15-SP4
SUSE	N/A	SUSE Manager Retail Branch Server 4.3
SUSE	N/A	SUSE Linux Enterprise Server 12 SP5 LTSS
SUSE	N/A	SUSE Linux Enterprise Server High Availability Extension 16.0
SUSE	N/A	openSUSE Leap 15.4
SUSE	N/A	SUSE Linux Enterprise Server for SAP Applications 15 SP4
SUSE	N/A	openSUSE Leap 15.5
SUSE	N/A	SUSE Manager Server 4.3
SUSE	N/A	SUSE Linux Micro Extras 6.1
SUSE	N/A	SUSE Linux Enterprise High Performance Computing 15 SP4
SUSE	N/A	SUSE Linux Enterprise Server for SAP applications 16.0
SUSE	N/A	SUSE Linux Enterprise Server 15 SP5
SUSE	N/A	SUSE Linux Enterprise Server for SAP Applications 15 SP5
SUSE	N/A	SUSE Linux Enterprise Real Time 15 SP5
SUSE	N/A	SUSE Linux Enterprise Live Patching 12-SP5
SUSE	N/A	SUSE Linux Micro 6.2
SUSE	N/A	SUSE Linux Enterprise Live Patching 15-SP5
SUSE	N/A	SUSE Linux Enterprise High Performance Computing LTSS 15 SP5
SUSE	N/A	SUSE Linux Enterprise Server 15 SP4 LTSS
SUSE	N/A	SUSE Linux Micro Extras 6.2
SUSE	N/A	SUSE Linux Enterprise Server 15 SP4
SUSE	N/A	SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4
SUSE	N/A	SUSE Linux Enterprise Server 15 SP5 LTSS
SUSE	N/A	SUSE Linux Enterprise High Performance Computing LTSS 15 SP4
SUSE	N/A	SUSE Linux Enterprise Real Time 15 SP4
SUSE	N/A	SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5
SUSE	N/A	SUSE Linux Enterprise Server 16.0
SUSE	N/A	SUSE Linux Enterprise Server for SAP Applications 12 SP5
SUSE	N/A	SUSE Linux Enterprise Micro 5.4
SUSE	N/A	SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security
SUSE	N/A	SUSE Linux Enterprise Micro 5.5

References

Title

Publication Time

CVE-2026-43414 (GCVE-0-2026-43414)

Vulnerability from cvelistv5 – Published: 2026-05-08 14:21 – Updated: 2026-05-23 16:06

Title

scsi: qla2xxx: Completely fix fcport double free

Summary

In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Completely fix fcport double free In qla24xx_els_dcmd_iocb() sp->free is set to qla2x00_els_dcmd_sp_free(). When an error happens, this function is called by qla2x00_sp_release(), when kref_put() releases the first and the last reference. qla2x00_els_dcmd_sp_free() frees fcport by calling qla2x00_free_fcport(). Doing it one more time after kref_put() is a bad idea.

Severity

9.8 (Critical)


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

Assigner

Linux

References

2 references

URL	Tags
https://git.kernel.org/stable/c/d48ea85463f5b34f7…
https://git.kernel.org/stable/c/c0b7da13a04bd70ef…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 4895009c4bb72f71f2e682f1e7d2c2d96e482087 , < d48ea85463f5b34f7b92ea0a13eddf1ab993da7b (git) Affected: 4895009c4bb72f71f2e682f1e7d2c2d96e482087 , < c0b7da13a04bd70ef6070bfb9ea85f582294560a (git) Affected: 7861213201838480dc222634c56fb6db113d010d (git) Affected: 3b9d72442adfbc9ddb0f76dd1b03977b3a578b16 (git) Affected: ef23850940d9a52c39936d27254824ccf5e9b6bd (git) Affected: 6c6bf6cacf9461f8d301cfac4f9c175d80cbcc63 (git) Affected: cd10dee1f07a782f5aa05703c55299ca86a85ee4 (git) Affected: b03e626bd6d3f0684f56ee1890d70fc9ca991c04 (git) Affected: 282877633b25d67021a34169c5b5519b1d4ef65e (git) Affected: f85af9f1aa5e2f53694a6cbe72010f754b5ff862 (git) Affected: 9b43d2884b54d415caab48878b526dfe2ae9921b (git) Affected: 846fb9f112f618ec6ae181d8dae7961652574774 (git) Affected: 5.15.154 , < 5.16 (semver) Affected: 6.1.84 , < 6.2 (semver) Affected: 6.6.24 , < 6.7 (semver) Affected: 6.7.12 , < 6.8 (semver) Affected: 6.8.3 , < 6.9 (semver)
Linux	Linux	Affected: 6.9 Unaffected: 0 , < 6.9 (semver) Unaffected: 6.19.9 , ≤ 6.19.* (semver) Unaffected: 7.0 , ≤ * (original_commit_for_fix)

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{
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CVE-2026-43455 (GCVE-0-2026-43455)

Vulnerability from cvelistv5 – Published: 2026-05-08 14:22 – Updated: 2026-05-11 22:24

Title

mctp: route: hold key->lock in mctp_flow_prepare_output()

Summary

In the Linux kernel, the following vulnerability has been resolved: mctp: route: hold key->lock in mctp_flow_prepare_output() mctp_flow_prepare_output() checks key->dev and may call mctp_dev_set_key(), but it does not hold key->lock while doing so. mctp_dev_set_key() and mctp_dev_release_key() are annotated with __must_hold(&key->lock), so key->dev access is intended to be serialized by key->lock. The mctp_sendmsg() transmit path reaches mctp_flow_prepare_output() via mctp_local_output() -> mctp_dst_output() without holding key->lock, so the check-and-set sequence is racy. Example interleaving: CPU0 CPU1 ---- ---- mctp_flow_prepare_output(key, devA) if (!key->dev) // sees NULL mctp_flow_prepare_output( key, devB) if (!key->dev) // still NULL mctp_dev_set_key(devB, key) mctp_dev_hold(devB) key->dev = devB mctp_dev_set_key(devA, key) mctp_dev_hold(devA) key->dev = devA // overwrites devB Now both devA and devB references were acquired, but only the final key->dev value is tracked for release. One reference can be lost, causing a resource leak as mctp_dev_release_key() would only decrease the reference on one dev. Fix by taking key->lock around the key->dev check and mctp_dev_set_key() call.

Severity

No CVSS data available.

Assigner

Linux

References

6 references

URL	Tags
https://git.kernel.org/stable/c/47893166bc5611ee9…
https://git.kernel.org/stable/c/86f5334fcb48a5b61…
https://git.kernel.org/stable/c/0695712f3a6f1a489…
https://git.kernel.org/stable/c/925a5ffd99cddd7a7…
https://git.kernel.org/stable/c/8d27d9b260dd19c1b…
https://git.kernel.org/stable/c/7d86aa41c073c4e7e…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 67737c457281dd199ceb9e31b6ba7efd3bfe566d , < 47893166bc5611ee9a20de6b8d2933b2320fb772 (git) Affected: 67737c457281dd199ceb9e31b6ba7efd3bfe566d , < 86f5334fcb48a5b611c33364ab52ca684d0f6d91 (git) Affected: 67737c457281dd199ceb9e31b6ba7efd3bfe566d , < 0695712f3a6f1a48915f95767cfb42077683dcdc (git) Affected: 67737c457281dd199ceb9e31b6ba7efd3bfe566d , < 925a5ffd99cddd7a7e41d5ad120c7a2c6d50260f (git) Affected: 67737c457281dd199ceb9e31b6ba7efd3bfe566d , < 8d27d9b260dd19c1b519e1a13de6448f9984e30e (git) Affected: 67737c457281dd199ceb9e31b6ba7efd3bfe566d , < 7d86aa41c073c4e7eb75fd2e674f1fd8f289728a (git)
Linux	Linux	Affected: 5.16 Unaffected: 0 , < 5.16 (semver) Unaffected: 6.1.167 , ≤ 6.1.* (semver) Unaffected: 6.6.130 , ≤ 6.6.* (semver) Unaffected: 6.12.78 , ≤ 6.12.* (semver) Unaffected: 6.18.19 , ≤ 6.18.* (semver) Unaffected: 6.19.9 , ≤ 6.19.* (semver) Unaffected: 7.0 , ≤ * (original_commit_for_fix)

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{
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      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/mctp/route.c"
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmctp: route: hold key-\u003elock in mctp_flow_prepare_output()\n\nmctp_flow_prepare_output() checks key-\u003edev and may call\nmctp_dev_set_key(), but it does not hold key-\u003elock while doing so.\n\nmctp_dev_set_key() and mctp_dev_release_key() are annotated with\n__must_hold(\u0026key-\u003elock), so key-\u003edev access is intended to be\nserialized by key-\u003elock. The mctp_sendmsg() transmit path reaches\nmctp_flow_prepare_output() via mctp_local_output() -\u003e mctp_dst_output()\nwithout holding key-\u003elock, so the check-and-set sequence is racy.\n\nExample interleaving:\n\n  CPU0                                  CPU1\n  ----                                  ----\n  mctp_flow_prepare_output(key, devA)\n    if (!key-\u003edev)  // sees NULL\n                                        mctp_flow_prepare_output(\n                                            key, devB)\n                                          if (!key-\u003edev)  // still NULL\n                                          mctp_dev_set_key(devB, key)\n                                            mctp_dev_hold(devB)\n                                            key-\u003edev = devB\n    mctp_dev_set_key(devA, key)\n      mctp_dev_hold(devA)\n      key-\u003edev = devA   // overwrites devB\n\nNow both devA and devB references were acquired, but only the final\nkey-\u003edev value is tracked for release. One reference can be lost,\ncausing a resource leak as mctp_dev_release_key() would only decrease\nthe reference on one dev.\n\nFix by taking key-\u003elock around the key-\u003edev check and\nmctp_dev_set_key() call."
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CVE-2026-43470 (GCVE-0-2026-43470)

Vulnerability from cvelistv5 – Published: 2026-05-08 14:22 – Updated: 2026-05-11 22:25

Title

nfs: return EISDIR on nfs3_proc_create if d_alias is a dir

Summary

In the Linux kernel, the following vulnerability has been resolved: nfs: return EISDIR on nfs3_proc_create if d_alias is a dir If we found an alias through nfs3_do_create/nfs_add_or_obtain /d_splice_alias which happens to be a dir dentry, we don't return any error, and simply forget about this alias, but the original dentry we were adding and passed as parameter remains negative. This later causes an oops on nfs_atomic_open_v23/finish_open since we supply a negative dentry to do_dentry_open. This has been observed running lustre-racer, where dirs and files are created/removed concurrently with the same name and O_EXCL is not used to open files (frequent file redirection). While d_splice_alias typically returns a directory alias or NULL, we explicitly check d_is_dir() to ensure that we don't attempt to perform file operations (like finish_open) on a directory inode, which triggers the observed oops.

Severity

No CVSS data available.

Assigner

Linux

References

4 references

URL	Tags
https://git.kernel.org/stable/c/7e2963773760a6646…
https://git.kernel.org/stable/c/203c792cb4315360d…
https://git.kernel.org/stable/c/9ee1770fcb2f1b483…
https://git.kernel.org/stable/c/410666a298c34ebd5…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 7c6c5249f061b64fc6b5b90bc147169a048691bf , < 7e2963773760a664684435201960dd2fb712f1b5 (git) Affected: 7c6c5249f061b64fc6b5b90bc147169a048691bf , < 203c792cb4315360d49973ae2e57feeb6d3dcf7e (git) Affected: 7c6c5249f061b64fc6b5b90bc147169a048691bf , < 9ee1770fcb2f1b48354622b926e7dc10222805f5 (git) Affected: 7c6c5249f061b64fc6b5b90bc147169a048691bf , < 410666a298c34ebd57256fde6b24c96bd23059a2 (git)
Linux	Linux	Affected: 6.10 Unaffected: 0 , < 6.10 (semver) Unaffected: 6.12.78 , ≤ 6.12.* (semver) Unaffected: 6.18.19 , ≤ 6.18.* (semver) Unaffected: 6.19.9 , ≤ 6.19.* (semver) Unaffected: 7.0 , ≤ * (original_commit_for_fix)

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JSON

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CVE-2026-43483 (GCVE-0-2026-43483)

Vulnerability from cvelistv5 – Published: 2026-05-13 15:08 – Updated: 2026-05-13 15:08

Title

KVM: SVM: Set/clear CR8 write interception when AVIC is (de)activated

Summary

In the Linux kernel, the following vulnerability has been resolved: KVM: SVM: Set/clear CR8 write interception when AVIC is (de)activated Explicitly set/clear CR8 write interception when AVIC is (de)activated to fix a bug where KVM leaves the interception enabled after AVIC is activated. E.g. if KVM emulates INIT=>WFS while AVIC is deactivated, CR8 will remain intercepted in perpetuity. On its own, the dangling CR8 intercept is "just" a performance issue, but combined with the TPR sync bug fixed by commit d02e48830e3f ("KVM: SVM: Sync TPR from LAPIC into VMCB::V_TPR even if AVIC is active"), the danging intercept is fatal to Windows guests as the TPR seen by hardware gets wildly out of sync with reality. Note, VMX isn't affected by the bug as TPR_THRESHOLD is explicitly ignored when Virtual Interrupt Delivery is enabled, i.e. when APICv is active in KVM's world. I.e. there's no need to trigger update_cr8_intercept(), this is firmly an SVM implementation flaw/detail. WARN if KVM gets a CR8 write #VMEXIT while AVIC is active, as KVM should never enter the guest with AVIC enabled and CR8 writes intercepted. [Squash fix to avic_deactivate_vmcb. - Paolo]

Severity

No CVSS data available.

Assigner

Linux

References

6 references

URL	Tags
https://git.kernel.org/stable/c/a4123fe5d9122eef9…
https://git.kernel.org/stable/c/816fa1dfae4532e85…
https://git.kernel.org/stable/c/01651e7751edbbc0f…
https://git.kernel.org/stable/c/ba3bca40f9f25c053…
https://git.kernel.org/stable/c/737410b32bd615b32…
https://git.kernel.org/stable/c/87d0f901a9bd8ae6b…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 3bbf3565f48ce3999b5a12cde946f81bd4475312 , < a4123fe5d9122eef9852e4921f7cc463420f30d4 (git) Affected: 3bbf3565f48ce3999b5a12cde946f81bd4475312 , < 816fa1dfae4532e851b1fe6b2434c753ecbd86c7 (git) Affected: 3bbf3565f48ce3999b5a12cde946f81bd4475312 , < 01651e7751edbbc0fb4598f8367a3dabcfc8c182 (git) Affected: 3bbf3565f48ce3999b5a12cde946f81bd4475312 , < ba3bca40f9f25c053f69413e5f4a41dd0fd762bf (git) Affected: 3bbf3565f48ce3999b5a12cde946f81bd4475312 , < 737410b32bd615b321da4fbeda490351b9af5e8b (git) Affected: 3bbf3565f48ce3999b5a12cde946f81bd4475312 , < 87d0f901a9bd8ae6be57249c737f20ac0cace93d (git)
Linux	Linux	Affected: 4.7 Unaffected: 0 , < 4.7 (semver) Unaffected: 6.1.167 , ≤ 6.1.* (semver) Unaffected: 6.6.130 , ≤ 6.6.* (semver) Unaffected: 6.12.78 , ≤ 6.12.* (semver) Unaffected: 6.18.19 , ≤ 6.18.* (semver) Unaffected: 6.19.9 , ≤ 6.19.* (semver) Unaffected: 7.0 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

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}

CVE-2026-43499 (GCVE-0-2026-43499)

Vulnerability from cvelistv5 – Published: 2026-05-21 12:17 – Updated: 2026-06-14 17:45

Title

rtmutex: Use waiter::task instead of current in remove_waiter()

Summary

In the Linux kernel, the following vulnerability has been resolved: rtmutex: Use waiter::task instead of current in remove_waiter() remove_waiter() is used by the slowlock paths, but it is also used for proxy-lock rollback in rt_mutex_start_proxy_lock() when invoked from futex_requeue(). In the latter case waiter::task is not current, but remove_waiter() operates on current for the dequeue operation. That results in several problems: 1) the rbtree dequeue happens without waiter::task::pi_lock being held 2) the waiter task's pi_blocked_on state is not cleared, which leaves a dangling pointer primed for UAF around. 3) rt_mutex_adjust_prio_chain() operates on the wrong top priority waiter task Use waiter::task instead of current in all related operations in remove_waiter() to cure those problems. [ tglx: Fixup rt_mutex_adjust_prio_chain(), add a comment and amend the changelog ]

Severity

7.8 (High)


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

Assigner

Linux

References

6 references

URL	Tags
https://git.kernel.org/stable/c/d8cce4773c2b23d81…
https://git.kernel.org/stable/c/8a1fc8d698ac5e591…
https://git.kernel.org/stable/c/6d52dfcb2a5db86e3…
https://git.kernel.org/stable/c/3fb7394a837740770…
https://git.kernel.org/stable/c/88614876370aac8ad…
https://git.kernel.org/stable/c/3bfdc63936dd47731…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 8161239a8bcce9ad6b537c04a1fa3b5c68bae693 , < d8cce4773c2b23d819baf5abedc62f7b430e8745 (git) Affected: 8161239a8bcce9ad6b537c04a1fa3b5c68bae693 , < 8a1fc8d698ac5e5916e3082a0f74450d71f9611f (git) Affected: 8161239a8bcce9ad6b537c04a1fa3b5c68bae693 , < 6d52dfcb2a5db86e346cf51f8fcf2071b8085166 (git) Affected: 8161239a8bcce9ad6b537c04a1fa3b5c68bae693 , < 3fb7394a837740770f0d6b4b30567e60786a63f2 (git) Affected: 8161239a8bcce9ad6b537c04a1fa3b5c68bae693 , < 88614876370aac8ad1050ad785a4c095ba17ac11 (git) Affected: 8161239a8bcce9ad6b537c04a1fa3b5c68bae693 , < 3bfdc63936dd4773109b7b8c280c0f3b5ae7d349 (git)
Linux	Linux	Affected: 2.6.39 Unaffected: 0 , < 2.6.39 (semver) Unaffected: 6.1.175 , ≤ 6.1.* (semver) Unaffected: 6.6.140 , ≤ 6.6.* (semver) Unaffected: 6.12.86 , ≤ 6.12.* (semver) Unaffected: 6.18.27 , ≤ 6.18.* (semver) Unaffected: 7.0.4 , ≤ 7.0.* (semver) Unaffected: 7.1 , ≤ * (original_commit_for_fix)

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JSON

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  "containers": {
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}

CVE-2026-43501 (GCVE-0-2026-43501)

Vulnerability from cvelistv5 – Published: 2026-05-21 12:17 – Updated: 2026-07-02 12:05

Title

ipv6: rpl: reserve mac_len headroom when recompressed SRH grows

Summary

In the Linux kernel, the following vulnerability has been resolved: ipv6: rpl: reserve mac_len headroom when recompressed SRH grows ipv6_rpl_srh_rcv() decompresses an RFC 6554 Source Routing Header, swaps the next segment into ipv6_hdr->daddr, recompresses, then pulls the old header and pushes the new one plus the IPv6 header back. The recompressed header can be larger than the received one when the swap reduces the common-prefix length the segments share with daddr (CmprI=0, CmprE>0, seg[0][0] != daddr[0] gives the maximum +8 bytes). pskb_expand_head() was gated on segments_left == 0, so on earlier segments the push consumed unchecked headroom. Once skb_push() leaves fewer than skb->mac_len bytes in front of data, skb_mac_header_rebuild()'s call to: skb_set_mac_header(skb, -skb->mac_len); will store (data - head) - mac_len into the u16 mac_header field, which wraps to ~65530, and the following memmove() writes mac_len bytes ~64KiB past skb->head. A single AF_INET6/SOCK_RAW/IPV6_HDRINCL packet over lo with a two segment type-3 SRH (CmprI=0, CmprE=15) reaches headroom 8 after one pass; KASAN reports a 14-byte OOB write in ipv6_rthdr_rcv. Fix this by expanding the head whenever the remaining room is less than the push size plus mac_len, and request that much extra so the rebuilt MAC header fits afterwards.

Severity

9.8 (Critical)


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

7.5 (High)


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

CWE

CWE-131 - Incorrect Calculation of Buffer Size

Assigner

Linux

References

18 references

URL	Tags
https://git.kernel.org/stable/c/bde199c72d319a4e2…
https://git.kernel.org/stable/c/be1fa0aa9b4fdd5a8…
https://git.kernel.org/stable/c/0a9e8053f1f8a8e1b…
https://git.kernel.org/stable/c/8e8be63465a5e8039…
https://git.kernel.org/stable/c/4babc2d9fda2df438…
https://git.kernel.org/stable/c/c261d07a80576dc8c…
https://git.kernel.org/stable/c/7398ebefbfd4f8a31…
https://git.kernel.org/stable/c/9e6bf146b55999a09…
https://access.redhat.com/security/cve/CVE-2026-43501	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2480457	issue-trackingx_refsource_REDHAT
https://security.access.redhat.com/data/csaf/v2/v…	x_sadp-csaf-vex
https://access.redhat.com/errata/RHSA-2026:27731	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:25191	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:34095	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:27713	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:34094	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:25217	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:33900	vendor-advisoryx_refsource_REDHAT

Impacted products

34 products

Vendor	Product	Version
Linux	Linux	Affected: 8610c7c6e3bd647ff98d21c8bc0580e77bc2f8b3 , < bde199c72d319a4e207f88daabc888317504e2fb (git) Affected: 8610c7c6e3bd647ff98d21c8bc0580e77bc2f8b3 , < be1fa0aa9b4fdd5a8b7a61ba520a690a68391e6e (git) Affected: 8610c7c6e3bd647ff98d21c8bc0580e77bc2f8b3 , < 0a9e8053f1f8a8e1bfc1dd61ffe67be6c1180402 (git) Affected: 8610c7c6e3bd647ff98d21c8bc0580e77bc2f8b3 , < 8e8be63465a5e80394c70324603dfea1bfdad48f (git) Affected: 8610c7c6e3bd647ff98d21c8bc0580e77bc2f8b3 , < 4babc2d9fda2df43823b85d08a0180b68f1b0854 (git) Affected: 8610c7c6e3bd647ff98d21c8bc0580e77bc2f8b3 , < c261d07a80576dc8ccf394ef8f074f8c67a06b37 (git) Affected: 8610c7c6e3bd647ff98d21c8bc0580e77bc2f8b3 , < 7398ebefbfd4f8a31d4f665a4213302fa995494b (git) Affected: 8610c7c6e3bd647ff98d21c8bc0580e77bc2f8b3 , < 9e6bf146b55999a095bb14f73a843942456d1adc (git)
Linux	Linux	Affected: 5.7 Unaffected: 0 , < 5.7 (semver) Unaffected: 5.10.258 , ≤ 5.10.* (semver) Unaffected: 5.15.209 , ≤ 5.15.* (semver) Unaffected: 6.1.175 , ≤ 6.1.* (semver) Unaffected: 6.6.140 , ≤ 6.6.* (semver) Unaffected: 6.12.86 , ≤ 6.12.* (semver) Unaffected: 6.18.27 , ≤ 6.18.* (semver) Unaffected: 7.0.4 , ≤ 7.0.* (semver) Unaffected: 7.1 , ≤ * (original_commit_for_fix)
Red Hat	Red Hat Enterprise Linux AppStream EUS (v. 10.0)	cpe:/o:redhat:enterprise_linux_eus:10.0
Red Hat	Red Hat Enterprise Linux AppStream (v. 10)	cpe:/o:redhat:enterprise_linux:10.2
Red Hat	Red Hat Enterprise Linux AppStream E4S (v.9.2)	cpe:/a:redhat:rhel_e4s:9.2::appstream
Red Hat	Red Hat Enterprise Linux AppStream E4S (v.9.4)	cpe:/a:redhat:rhel_e4s:9.4::appstream
Red Hat	Red Hat Enterprise Linux AppStream EUS (v.9.6)	cpe:/a:redhat:rhel_eus:9.6::appstream
Red Hat	Red Hat Enterprise Linux AppStream (v. 9)	cpe:/a:redhat:enterprise_linux:9::appstream
Red Hat	Red Hat Enterprise Linux BaseOS EUS (v. 10.0)	cpe:/o:redhat:enterprise_linux_eus:10.0
Red Hat	Red Hat Enterprise Linux BaseOS (v. 10)	cpe:/o:redhat:enterprise_linux:10.2
Red Hat	Red Hat Enterprise Linux BaseOS E4S (v.9.2)	cpe:/o:redhat:rhel_e4s:9.2::baseos
Red Hat	Red Hat Enterprise Linux BaseOS E4S (v.9.4)	cpe:/o:redhat:rhel_e4s:9.4::baseos
Red Hat	Red Hat Enterprise Linux BaseOS EUS (v.9.6)	cpe:/o:redhat:rhel_eus:9.6::baseos
Red Hat	Red Hat Enterprise Linux BaseOS (v. 9)	cpe:/o:redhat:enterprise_linux:9::baseos
Red Hat	Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0)	cpe:/o:redhat:enterprise_linux_eus:10.0
Red Hat	Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)	cpe:/o:redhat:enterprise_linux:10.2
Red Hat	Red Hat CodeReady Linux Builder EUS (v.9.6)	cpe:/a:redhat:rhel_eus:9.6::crb
Red Hat	Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)	cpe:/a:redhat:enterprise_linux:9::crb
Red Hat	Red Hat Enterprise Linux Real Time for NFV EUS (v. 10.0)	cpe:/o:redhat:enterprise_linux_eus:10.0
Red Hat	Red Hat Enterprise Linux Real Time for NFV (v. 10)	cpe:/o:redhat:enterprise_linux:10.2
Red Hat	Red Hat Enterprise Linux Real Time for NFV E4S (v.9.2)	cpe:/a:redhat:rhel_e4s:9.2::nfv
Red Hat	Red Hat Enterprise Linux Real Time for NFV E4S (v.9.4)	cpe:/a:redhat:rhel_e4s:9.4::nfv
Red Hat	Red Hat Enterprise Linux Real Time for NFV EUS (v.9.6)	cpe:/a:redhat:rhel_eus:9.6::nfv
Red Hat	Red Hat Enterprise Linux Real Time for NFV (v. 9)	cpe:/a:redhat:enterprise_linux:9::nfv
Red Hat	Red Hat Enterprise Linux Real Time EUS (v. 10.0)	cpe:/o:redhat:enterprise_linux_eus:10.0
Red Hat	Red Hat Enterprise Linux Real Time (v. 10)	cpe:/o:redhat:enterprise_linux:10.2
Red Hat	Red Hat Enterprise Linux Real Time E4S (v.9.2)	cpe:/a:redhat:rhel_e4s:9.2::realtime
Red Hat	Red Hat Enterprise Linux Real Time E4S (v.9.4)	cpe:/a:redhat:rhel_e4s:9.4::realtime
Red Hat	Red Hat Enterprise Linux Real Time EUS (v.9.6)	cpe:/a:redhat:rhel_eus:9.6::realtime
Red Hat	Red Hat Enterprise Linux Real Time (v. 9)	cpe:/a:redhat:enterprise_linux:9::realtime
Red Hat	Red Hat Enterprise Linux 9	cpe:/o:redhat:enterprise_linux:9
Red Hat	Red Hat Enterprise Linux 6	cpe:/o:redhat:enterprise_linux:6
Red Hat	Red Hat Enterprise Linux 7	cpe:/o:redhat:enterprise_linux:7
Red Hat	Red Hat Enterprise Linux 8	cpe:/o:redhat:enterprise_linux:8

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{
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      {
        "affected": [
          {
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            "defaultStatus": "affected",
            "product": "Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0)",
            "vendor": "Red Hat"
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CVE-2026-43503 (GCVE-0-2026-43503)

Vulnerability from cvelistv5 – Published: 2026-05-23 11:44 – Updated: 2026-07-02 12:05

Title

net: skbuff: propagate shared-frag marker through frag-transfer helpers

Summary

In the Linux kernel, the following vulnerability has been resolved: net: skbuff: propagate shared-frag marker through frag-transfer helpers Two frag-transfer helpers (__pskb_copy_fclone() and skb_shift()) fail to propagate the SKBFL_SHARED_FRAG bit in skb_shinfo()->flags when moving frags from source to destination. __pskb_copy_fclone() defers the rest of the shinfo metadata to skb_copy_header() after copying frag descriptors, but that helper only carries over gso_{size,segs, type} and never touches skb_shinfo()->flags; skb_shift() moves frag descriptors directly and leaves flags untouched. As a result, the destination skb keeps a reference to the same externally-owned or page-cache-backed pages while reporting skb_has_shared_frag() as false. The mismatch is harmful in any in-place writer that uses skb_has_shared_frag() to decide whether shared pages must be detoured through skb_cow_data(). ESP input is one such writer (esp4.c, esp6.c), and a single nft 'dup to <local>' rule -- or any other nf_dup_ipv4() / xt_TEE caller -- is enough to land a pskb_copy()'d skb in esp_input() with the marker stripped, letting an unprivileged user write into the page cache of a root-owned read-only file via authencesn-ESN stray writes. Set SKBFL_SHARED_FRAG on the destination whenever frag descriptors were actually moved from the source. skb_copy() and skb_copy_expand() share skb_copy_header() too but linearize all paged data into freshly allocated head storage and emerge with nr_frags == 0, so skb_has_shared_frag() returns false on its own; they need no change. The same omission exists in skb_gro_receive() and skb_gro_receive_list(). The former moves the incoming skb's frag descriptors into the accumulator's last sub-skb via two paths (a direct frag-move loop and the head_frag + memcpy path); the latter chains the incoming skb whole onto p's frag_list. Downstream skb_segment() reads only skb_shinfo(p)->flags, and skb_segment_list() reuses each sub-skb's shinfo as the nskb -- both p and lp must carry the marker. The same omission also exists in tcp_clone_payload(), which builds an MTU probe skb by moving frag descriptors from skbs on sk_write_queue into a freshly allocated nskb. The helper falls into the same family and warrants the same fix for consistency; no TCP TX-side in-place writer is currently known to reach a user page through this gap, but a future consumer depending on the marker would regress silently. The same omission exists in skb_segment(): the per-iteration flag merge takes only head_skb's flag, and the inner switch that rebinds frag_skb to list_skb on head_skb-frags exhaustion does not fold the new frag_skb's flag into nskb. Fold frag_skb's flag at both sites so segments drawing frags from frag_list members carry the marker.

Severity

8.8 (High)


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

7 (High)


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

CWE

CWE-664 - Improper Control of a Resource Through its Lifetime

Assigner

Linux

References

41 references

URL	Tags
https://git.kernel.org/stable/c/fbeab9555564a1b98…
https://git.kernel.org/stable/c/179f1852bdedc300e…
https://git.kernel.org/stable/c/12401fcfb01f53ccc…
https://git.kernel.org/stable/c/989214c66884d7071…
https://git.kernel.org/stable/c/fc6eb39c55e97df2f…
https://git.kernel.org/stable/c/ff375cc75f9167168…
https://git.kernel.org/stable/c/9bc9d6d6967a2239a…
https://git.kernel.org/stable/c/48f6a5356a33dd78e…
https://access.redhat.com/security/cve/CVE-2026-43503	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2480902	issue-trackingx_refsource_REDHAT
https://security.access.redhat.com/data/csaf/v2/v…	x_sadp-csaf-vex
https://access.redhat.com/errata/RHSA-2026:19540	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:33486	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:21695	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:21690	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:23233	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:20087	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:25044	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:21656	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:23245	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:21702	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:23240	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:20299	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:19569	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:19705	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:20593	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:20054	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:20129	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:19568	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:19666	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:23470	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:20130	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:20051	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:19521	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:23471	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:23469	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:24814	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:23468	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:19664	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:19711	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:19875	vendor-advisoryx_refsource_REDHAT

Impacted products

59 products

Vendor	Product	Version
Linux	Linux	Affected: cef401de7be8c4e155c6746bfccf721a4fa5fab9 , < fbeab9555564a1b98e8582cd106dfe46c4606991 (git) Affected: cef401de7be8c4e155c6746bfccf721a4fa5fab9 , < 179f1852bdedc300e373e807cc102cd81feff196 (git) Affected: cef401de7be8c4e155c6746bfccf721a4fa5fab9 , < 12401fcfb01f53ccc63ab0a3246570fe8f3105ee (git) Affected: cef401de7be8c4e155c6746bfccf721a4fa5fab9 , < 989214c66884d70716d83dc1d0bf5e16287bf349 (git) Affected: cef401de7be8c4e155c6746bfccf721a4fa5fab9 , < fc6eb39c55e97df2f94ad974b8a5bbcd019da2c8 (git) Affected: cef401de7be8c4e155c6746bfccf721a4fa5fab9 , < ff375cc75f9167168db38e0464a482d5fbc8d81d (git) Affected: cef401de7be8c4e155c6746bfccf721a4fa5fab9 , < 9bc9d6d6967a2239aa57af2aa53554eddd640d20 (git) Affected: cef401de7be8c4e155c6746bfccf721a4fa5fab9 , < 48f6a5356a33dd78e7144ae1faef95ffc990aae0 (git)
Linux	Linux	Affected: 3.9 Unaffected: 0 , < 3.9 (semver) Unaffected: 5.10.257 , ≤ 5.10.* (semver) Unaffected: 5.15.208 , ≤ 5.15.* (semver) Unaffected: 6.1.174 , ≤ 6.1.* (semver) Unaffected: 6.6.141 , ≤ 6.6.* (semver) Unaffected: 6.12.91 , ≤ 6.12.* (semver) Unaffected: 6.18.33 , ≤ 6.18.* (semver) Unaffected: 7.0.10 , ≤ 7.0.* (semver) Unaffected: 7.1 , ≤ * (original_commit_for_fix)
Red Hat	NVIDIA for RHEL 10	cpe:/a:redhat:enterprise_linux_nvidia:10::el10
Red Hat	Red Hat OpenShift Container Platform 4.12	cpe:/a:redhat:openshift:4.12::el8
Red Hat	Red Hat OpenShift Container Platform 4.13	cpe:/a:redhat:openshift:4.13::el9
Red Hat	Red Hat OpenShift Container Platform 4.15	cpe:/a:redhat:openshift:4.15::el9
Red Hat	Red Hat OpenShift Container Platform 4.16	cpe:/a:redhat:openshift:4.16::el9
Red Hat	Red Hat OpenShift Container Platform 4.18	cpe:/a:redhat:openshift:4.18::el9
Red Hat	Red Hat OpenShift Container Platform 4.19	cpe:/a:redhat:openshift:4.19::el9
Red Hat	Red Hat OpenShift Container Platform 4.20	cpe:/a:redhat:openshift:4.20::el9
Red Hat	Red Hat OpenShift Container Platform 4.21	cpe:/a:redhat:openshift:4.21::el9
Red Hat	Red Hat Enterprise Linux AppStream EUS (v. 10.0)	cpe:/o:redhat:enterprise_linux_eus:10.0
Red Hat	Red Hat Enterprise Linux AppStream (v. 10)	cpe:/o:redhat:enterprise_linux:10.2
Red Hat	Red Hat Enterprise Linux AppStream E4S (v.9.0)	cpe:/a:redhat:rhel_e4s:9.0::appstream
Red Hat	Red Hat Enterprise Linux AppStream E4S (v.9.2)	cpe:/a:redhat:rhel_e4s:9.2::appstream
Red Hat	Red Hat Enterprise Linux AppStream EUS (v.9.4)	cpe:/a:redhat:rhel_eus:9.4::appstream
Red Hat	Red Hat Enterprise Linux AppStream EUS (v.9.6)	cpe:/a:redhat:rhel_eus:9.6::appstream
Red Hat	Red Hat Enterprise Linux AppStream (v. 9)	cpe:/a:redhat:enterprise_linux:9::appstream
Red Hat	Red Hat Enterprise Linux BaseOS EUS (v. 10.0)	cpe:/o:redhat:enterprise_linux_eus:10.0
Red Hat	Red Hat Enterprise Linux BaseOS (v. 10)	cpe:/o:redhat:enterprise_linux:10.2
Red Hat	Red Hat Enterprise Linux BaseOS (v. 8)	cpe:/o:redhat:enterprise_linux:8::baseos
Red Hat	Red Hat Enterprise Linux BaseOS AUS (v.8.4)	cpe:/o:redhat:rhel_aus:8.4::baseos
Red Hat	Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4)	cpe:/o:redhat:rhel_eus_long_life:8.4::baseos
Red Hat	Red Hat Enterprise Linux BaseOS AUS (v.8.6)	cpe:/o:redhat:rhel_aus:8.6::baseos
Red Hat	Red Hat Enterprise Linux BaseOS E4S (v.8.6)	cpe:/o:redhat:rhel_e4s:8.6::baseos
Red Hat	Red Hat Enterprise Linux BaseOS TUS (v.8.6)	cpe:/o:redhat:rhel_tus:8.6::baseos
Red Hat	Red Hat Enterprise Linux BaseOS E4S (v.8.8)	cpe:/o:redhat:rhel_e4s:8.8::baseos
Red Hat	Red Hat Enterprise Linux BaseOS TUS (v.8.8)	cpe:/o:redhat:rhel_tus:8.8::baseos
Red Hat	Red Hat Enterprise Linux BaseOS E4S (v.9.0)	cpe:/o:redhat:rhel_e4s:9.0::baseos
Red Hat	Red Hat Enterprise Linux BaseOS E4S (v.9.2)	cpe:/o:redhat:rhel_e4s:9.2::baseos
Red Hat	Red Hat Enterprise Linux BaseOS E4S (v.9.4)	cpe:/o:redhat:rhel_e4s:9.4::baseos
Red Hat	Red Hat Enterprise Linux BaseOS EUS (v.9.4)	cpe:/o:redhat:rhel_eus:9.4::baseos
Red Hat	Red Hat Enterprise Linux BaseOS EUS (v.9.6)	cpe:/o:redhat:rhel_eus:9.6::baseos
Red Hat	Red Hat Enterprise Linux BaseOS (v. 9)	cpe:/o:redhat:enterprise_linux:9::baseos
Red Hat	Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0)	cpe:/o:redhat:enterprise_linux_eus:10.0
Red Hat	Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)	cpe:/o:redhat:enterprise_linux:10.2
Red Hat	Red Hat Enterprise Linux CRB (v. 8)	cpe:/a:redhat:enterprise_linux:8::crb
Red Hat	Red Hat CodeReady Linux Builder EUS (v.9.4)	cpe:/a:redhat:rhel_eus:9.4::crb
Red Hat	Red Hat CodeReady Linux Builder EUS (v.9.6)	cpe:/a:redhat:rhel_eus:9.6::crb
Red Hat	Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)	cpe:/a:redhat:enterprise_linux:9::crb
Red Hat	Red Hat Enterprise Linux Real Time for NFV EUS (v. 10.0)	cpe:/o:redhat:enterprise_linux_eus:10.0
Red Hat	Red Hat Enterprise Linux Real Time for NFV (v. 10)	cpe:/o:redhat:enterprise_linux:10.2
Red Hat	Red Hat Enterprise Linux NFV (v. 8)	cpe:/a:redhat:enterprise_linux:8::nfv
Red Hat	Red Hat Enterprise Linux NFV E4S (v.9.0)	cpe:/a:redhat:rhel_e4s:9.0::nfv
Red Hat	Red Hat Enterprise Linux Real Time for NFV E4S (v.9.2)	cpe:/a:redhat:rhel_e4s:9.2::nfv
Red Hat	Red Hat Enterprise Linux Real Time for NFV EUS (v.9.4)	cpe:/a:redhat:rhel_eus:9.4::nfv
Red Hat	Red Hat Enterprise Linux Real Time for NFV EUS (v.9.6)	cpe:/a:redhat:rhel_eus:9.6::nfv
Red Hat	Red Hat Enterprise Linux Real Time for NFV (v. 9)	cpe:/a:redhat:enterprise_linux:9::nfv
Red Hat	Red Hat Enterprise Linux Real Time EUS (v. 10.0)	cpe:/o:redhat:enterprise_linux_eus:10.0
Red Hat	Red Hat Enterprise Linux Real Time (v. 10)	cpe:/o:redhat:enterprise_linux:10.2
Red Hat	Red Hat Enterprise Linux RT (v. 8)	cpe:/a:redhat:enterprise_linux:8::realtime
Red Hat	Red Hat Enterprise Linux Real Time E4S (v.9.0)	cpe:/a:redhat:rhel_e4s:9.0::realtime
Red Hat	Red Hat Enterprise Linux Real Time E4S (v.9.2)	cpe:/a:redhat:rhel_e4s:9.2::realtime
Red Hat	Red Hat Enterprise Linux Real Time EUS (v.9.4)	cpe:/a:redhat:rhel_eus:9.4::realtime
Red Hat	Red Hat Enterprise Linux Real Time EUS (v.9.6)	cpe:/a:redhat:rhel_eus:9.6::realtime
Red Hat	Red Hat Enterprise Linux Real Time (v. 9)	cpe:/a:redhat:enterprise_linux:9::realtime
Red Hat	Red Hat Enterprise Linux 6	cpe:/o:redhat:enterprise_linux:6
Red Hat	Red Hat Enterprise Linux 7	cpe:/o:redhat:enterprise_linux:7
Red Hat	Red Hat OpenShift Container Platform 4	cpe:/a:redhat:openshift:4

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{
  "containers": {
    "adp": [
      {
        "affected": [
          {
            "cpes": [
              "cpe:/a:redhat:enterprise_linux_nvidia:10::el10"
            ],
            "defaultStatus": "affected",
            "product": "NVIDIA for RHEL 10",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/a:redhat:openshift:4.12::el8"
            ],
            "defaultStatus": "affected",
            "product": "Red Hat OpenShift Container Platform 4.12",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/a:redhat:openshift:4.13::el9"
            ],
            "defaultStatus": "affected",
            "product": "Red Hat OpenShift Container Platform 4.13",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/a:redhat:openshift:4.15::el9"
            ],
            "defaultStatus": "affected",
            "product": "Red Hat OpenShift Container Platform 4.15",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/a:redhat:openshift:4.16::el9"
            ],
            "defaultStatus": "affected",
            "product": "Red Hat OpenShift Container Platform 4.16",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/a:redhat:openshift:4.18::el9"
            ],
            "defaultStatus": "affected",
            "product": "Red Hat OpenShift Container Platform 4.18",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/a:redhat:openshift:4.19::el9"
            ],
            "defaultStatus": "affected",
            "product": "Red Hat OpenShift Container Platform 4.19",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/a:redhat:openshift:4.20::el9"
            ],
            "defaultStatus": "affected",
            "product": "Red Hat OpenShift Container Platform 4.20",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/a:redhat:openshift:4.21::el9"
            ],
            "defaultStatus": "affected",
            "product": "Red Hat OpenShift Container Platform 4.21",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/o:redhat:enterprise_linux_eus:10.0"
            ],
            "defaultStatus": "affected",
            "product": "Red Hat Enterprise Linux AppStream EUS (v. 10.0)",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/o:redhat:enterprise_linux:10.2"
            ],
            "defaultStatus": "affected",
            "product": "Red Hat Enterprise Linux AppStream (v. 10)",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/a:redhat:rhel_e4s:9.0::appstream"
            ],
            "defaultStatus": "affected",
            "product": "Red Hat Enterprise Linux AppStream E4S (v.9.0)",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/a:redhat:rhel_e4s:9.2::appstream"
            ],
            "defaultStatus": "affected",
            "product": "Red Hat Enterprise Linux AppStream E4S (v.9.2)",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/a:redhat:rhel_eus:9.4::appstream"
            ],
            "defaultStatus": "affected",
            "product": "Red Hat Enterprise Linux AppStream EUS (v.9.4)",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/a:redhat:rhel_eus:9.6::appstream"
            ],
            "defaultStatus": "affected",
            "product": "Red Hat Enterprise Linux AppStream EUS (v.9.6)",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/a:redhat:enterprise_linux:9::appstream"
            ],
            "defaultStatus": "affected",
            "product": "Red Hat Enterprise Linux AppStream (v. 9)",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/o:redhat:enterprise_linux_eus:10.0"
            ],
            "defaultStatus": "affected",
            "product": "Red Hat Enterprise Linux BaseOS EUS (v. 10.0)",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/o:redhat:enterprise_linux:10.2"
            ],
            "defaultStatus": "affected",
            "product": "Red Hat Enterprise Linux BaseOS (v. 10)",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/o:redhat:enterprise_linux:8::baseos"
            ],
            "defaultStatus": "affected",
            "product": "Red Hat Enterprise Linux BaseOS (v. 8)",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/o:redhat:rhel_aus:8.4::baseos"
            ],
            "defaultStatus": "affected",
            "product": "Red Hat Enterprise Linux BaseOS AUS (v.8.4)",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/o:redhat:rhel_eus_long_life:8.4::baseos"
            ],
            "defaultStatus": "affected",
            "product": "Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4)",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/o:redhat:rhel_aus:8.6::baseos"
            ],
            "defaultStatus": "affected",
            "product": "Red Hat Enterprise Linux BaseOS AUS (v.8.6)",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/o:redhat:rhel_e4s:8.6::baseos"
            ],
            "defaultStatus": "affected",
            "product": "Red Hat Enterprise Linux BaseOS E4S (v.8.6)",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/o:redhat:rhel_tus:8.6::baseos"
            ],
            "defaultStatus": "affected",
            "product": "Red Hat Enterprise Linux BaseOS TUS (v.8.6)",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/o:redhat:rhel_e4s:8.8::baseos"
            ],
            "defaultStatus": "affected",
            "product": "Red Hat Enterprise Linux BaseOS E4S (v.8.8)",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/o:redhat:rhel_tus:8.8::baseos"
            ],
            "defaultStatus": "affected",
            "product": "Red Hat Enterprise Linux BaseOS TUS (v.8.8)",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/o:redhat:rhel_e4s:9.0::baseos"
            ],
            "defaultStatus": "affected",
            "product": "Red Hat Enterprise Linux BaseOS E4S (v.9.0)",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/o:redhat:rhel_e4s:9.2::baseos"
            ],
            "defaultStatus": "affected",
            "product": "Red Hat Enterprise Linux BaseOS E4S (v.9.2)",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/o:redhat:rhel_e4s:9.4::baseos"
            ],
            "defaultStatus": "affected",
            "product": "Red Hat Enterprise Linux BaseOS E4S (v.9.4)",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/o:redhat:rhel_eus:9.4::baseos"
            ],
            "defaultStatus": "affected",
            "product": "Red Hat Enterprise Linux BaseOS EUS (v.9.4)",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/o:redhat:rhel_eus:9.6::baseos"
            ],
            "defaultStatus": "affected",
            "product": "Red Hat Enterprise Linux BaseOS EUS (v.9.6)",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/o:redhat:enterprise_linux:9::baseos"
            ],
            "defaultStatus": "affected",
            "product": "Red Hat Enterprise Linux BaseOS (v. 9)",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/o:redhat:enterprise_linux_eus:10.0"
            ],
            "defaultStatus": "affected",
            "product": "Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0)",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/o:redhat:enterprise_linux:10.2"
            ],
            "defaultStatus": "affected",
            "product": "Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/a:redhat:enterprise_linux:8::crb"
            ],
            "defaultStatus": "affected",
            "product": "Red Hat Enterprise Linux CRB (v. 8)",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/a:redhat:rhel_eus:9.4::crb"
            ],
            "defaultStatus": "affected",
            "product": "Red Hat CodeReady Linux Builder EUS (v.9.4)",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/a:redhat:rhel_eus:9.6::crb"
            ],
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: skbuff: propagate shared-frag marker through frag-transfer helpers\n\nTwo frag-transfer helpers (__pskb_copy_fclone() and skb_shift()) fail\nto propagate the SKBFL_SHARED_FRAG bit in skb_shinfo()-\u003eflags when\nmoving frags from source to destination.  __pskb_copy_fclone() defers\nthe rest of the shinfo metadata to skb_copy_header() after copying\nfrag descriptors, but that helper only carries over gso_{size,segs,\ntype} and never touches skb_shinfo()-\u003eflags; skb_shift() moves frag\ndescriptors directly and leaves flags untouched.  As a result, the\ndestination skb keeps a reference to the same externally-owned or\npage-cache-backed pages while reporting skb_has_shared_frag() as\nfalse.\n\nThe mismatch is harmful in any in-place writer that uses\nskb_has_shared_frag() to decide whether shared pages must be detoured\nthrough skb_cow_data().  ESP input is one such writer (esp4.c,\nesp6.c), and a single nft \u0027dup to \u003clocal\u003e\u0027 rule -- or any other\nnf_dup_ipv4() / xt_TEE caller -- is enough to land a pskb_copy()\u0027d\nskb in esp_input() with the marker stripped, letting an unprivileged\nuser write into the page cache of a root-owned read-only file via\nauthencesn-ESN stray writes.\n\nSet SKBFL_SHARED_FRAG on the destination whenever frag descriptors\nwere actually moved from the source.  skb_copy() and skb_copy_expand()\nshare skb_copy_header() too but linearize all paged data into freshly\nallocated head storage and emerge with nr_frags == 0, so\nskb_has_shared_frag() returns false on its own; they need no change.\n\nThe same omission exists in skb_gro_receive() and skb_gro_receive_list().\nThe former moves the incoming skb\u0027s frag descriptors into the\naccumulator\u0027s last sub-skb via two paths (a direct frag-move loop and\nthe head_frag + memcpy path); the latter chains the incoming skb whole\nonto p\u0027s frag_list.  Downstream skb_segment() reads only\nskb_shinfo(p)-\u003eflags, and skb_segment_list() reuses each sub-skb\u0027s\nshinfo as the nskb -- both p and lp must carry the marker.\n\nThe same omission also exists in tcp_clone_payload(), which builds an\nMTU probe skb by moving frag descriptors from skbs on sk_write_queue\ninto a freshly allocated nskb.  The helper falls into the same family\nand warrants the same fix for consistency; no TCP TX-side in-place\nwriter is currently known to reach a user page through this gap, but\na future consumer depending on the marker would regress silently.\n\nThe same omission exists in skb_segment(): the per-iteration flag\nmerge takes only head_skb\u0027s flag, and the inner switch that rebinds\nfrag_skb to list_skb on head_skb-frags exhaustion does not fold the\nnew frag_skb\u0027s flag into nskb.  Fold frag_skb\u0027s flag at both sites\nso segments drawing frags from frag_list members carry the marker."
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          "url": "https://git.kernel.org/stable/c/ff375cc75f9167168db38e0464a482d5fbc8d81d"
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          "url": "https://git.kernel.org/stable/c/9bc9d6d6967a2239aa57af2aa53554eddd640d20"
        },
        {
          "url": "https://git.kernel.org/stable/c/48f6a5356a33dd78e7144ae1faef95ffc990aae0"
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CVE-2026-45445 (GCVE-0-2026-45445)

Vulnerability from cvelistv5 – Published: 2026-06-09 16:03 – Updated: 2026-06-10 07:48

Title

AES-OCB IV Ignored on EVP_Cipher() Path

Summary

Issue summary: When an application drives an AES-OCB context through the public EVP_Cipher() one-shot interface, the application-supplied initialisation vector (IV) is silently discarded. Impact summary: Every message encrypted under the same key uses the same effective nonce regardless of the IV supplied by the caller, resulting in (key, nonce) reuse and loss of confidentiality. If the same code path is used to compute the authentication tag, the tag depends only on the (key, IV) pair and not on the plaintext or ciphertext, allowing universal forgery of arbitrary ciphertext from a single captured message. OpenSSL provides two ways to drive a cipher: the documented streaming interface (EVP_CipherUpdate / EVP_CipherFinal_ex) and a lower-level one-shot, EVP_Cipher(), whose documentation explicitly recommends against use by applications in favour of EVP_CipherUpdate() and EVP_CipherFinal_ex(). The OCB provider's streaming handler flushes the application-supplied IV into the OCB context before processing data; the one-shot handler did not. Every call to EVP_Cipher() on an AES-OCB context therefore ran with the all-zero key-derived offset state left by cipher initialisation, regardless of the caller's IV. If EVP_EncryptFinal_ex() is subsequently used to obtain the authentication tag, the deferred IV setup runs at that point and clears the running checksum that should have been accumulated over the plaintext. The resulting tag is a function of (key, IV) only and verifies against any ciphertext produced under the same (key, IV) pair. The OpenSSL SSL/TLS implementation is not affected: AES-OCB is not a TLS cipher suite, and libssl does not call EVP_Cipher() in any case. Applications that drive AES-OCB through the documented streaming AEAD API (EVP_CipherUpdate / EVP_CipherFinal_ex) are not affected. Only applications that combine the AES-OCB cipher with the EVP_Cipher() one-shot API are vulnerable. The FIPS modules in 4.0, 3.6, 3.5, 3.4 and 3.0 are not affected by this issue, as AES-OCB is outside the OpenSSL FIPS module boundary.

Severity

7.5 (High)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-325 - Missing Cryptographic Step

Assigner

openssl

References

6 references

URL	Tags
https://openssl-library.org/news/secadv/20260609.txt	vendor-advisory
https://github.com/openssl/openssl/commit/843c9b9…	patch
https://github.com/openssl/openssl/commit/787a6df…	patch
https://github.com/openssl/openssl/commit/983d54b…	patch
https://github.com/openssl/openssl/commit/7ac4715…	patch
https://github.com/openssl/openssl/commit/323f0b6…	patch

Impacted products

1 product

Vendor	Product	Version
OpenSSL	OpenSSL	Affected: 4.0.0 , < 4.0.1 (semver) Affected: 3.6.0 , < 3.6.3 (semver) Affected: 3.5.0 , < 3.5.7 (semver) Affected: 3.4.0 , < 3.4.6 (semver) Affected: 3.0.0 , < 3.0.21 (semver)

Date Public

2026-06-09 14:00

Credits

Alex Gaynor (Anthropic) Viktor Dukhovni

Show details on NVD website

JSON

To clipboard

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CVE-2026-45446 (GCVE-0-2026-45446)

Vulnerability from cvelistv5 – Published: 2026-06-09 16:03 – Updated: 2026-06-10 07:48

Title

Incorrect Tag Processing for Empty Messages in AES-GCM-SIV and AES-SIV modes

Summary

Issue summary: The implementations of AES-SIV (RFC 5297) and AES-GCM-SIV (RFC 8452) mishandle the authentication of AAD (Additional Authenticated Data) with an empty ciphertext allowing a forgery of such messages. Impact summary: An attacker can forge empty messages with arbitrary AAD to the victim's application using these ciphers. AES-SIV (RFC 5297) and AES-GCM-SIV (RFC 8452) are nonce-misuse-resistant AEAD modes: they accept a key, nonce, optional AAD (bytes that are authenticated but not encrypted), and plaintext, and produces ciphertext plus a 16-byte tag. On decrypt, `EVP_DecryptFinal_ex()` is documented to return success only if the tag is verified succesfully. In OpenSSL's provider implementation of these ciphers, the expected tag is computed only when decryption function is invoked with non-empty data. If the caller supplies AAD and then calls `EVP_DecryptFinal_ex()` without invocation of the ciphertext update, which can happen when the received ciphertext length is zero, the tag is never recalculated and still holds its all-zeros value. When AES-GCM-SIV is used, an attacker who sends arbitrary AAD, empty ciphertext, and all-zeros tag passes authentication under any key they do not know, single-shot. When AES-SIV is used, for mounting the attack it's necessary for the application to reuse the decryption context without resetting the key. AES-SIV is implemented since OpenSSL 3.0. AES-GCM-SIV is implemented since OpenSSL 3.2. No protocols implemented in OpenSSL itself (TLS/CMS/PKCS7/HPKE/QUIC) support either AES-GCM-SIV or AES-SIV. To mount an attack, the applications must implement their own protocol and use the EVP interface. Also they must skip the ciphertext update when a message with an empty ciphertext arrives. The FIPS modules in 4.0, 3.6, 3.5, 3.4, and 3.0 are not affected by this issue, as these algorithms are not FIPS approved and the affected code is outside the OpenSSL FIPS module boundary.

Severity

4.8 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-325 - Missing Cryptographic Step

Assigner

openssl

References

6 references

URL	Tags
https://openssl-library.org/news/secadv/20260609.txt	vendor-advisory
https://github.com/openssl/openssl/commit/25b32cd…	patch
https://github.com/openssl/openssl/commit/eec5e9b…	patch
https://github.com/openssl/openssl/commit/7fe3f33…	patch
https://github.com/openssl/openssl/commit/daca0f4…	patch
https://github.com/openssl/openssl/commit/71e2a5d…	patch

Impacted products

1 product

Vendor	Product	Version
OpenSSL	OpenSSL	Affected: 4.0.0 , < 4.0.1 (semver) Affected: 3.6.0 , < 3.6.3 (semver) Affected: 3.5.0 , < 3.5.7 (semver) Affected: 3.4.0 , < 3.4.6 (semver) Affected: 3.0.0 , < 3.0.21 (semver)

Date Public

2026-06-09 14:00

Credits

Alex Gaynor (Anthropic) Dmitry Belyavskiy (Red Hat)

Show details on NVD website

JSON

To clipboard

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        "metrics": [
          {
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              "attackComplexity": "HIGH",
              "attackVector": "NETWORK",
              "availabilityImpact": "NONE",
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CVE-2026-45447 (GCVE-0-2026-45447)

Vulnerability from cvelistv5 – Published: 2026-06-09 16:03 – Updated: 2026-07-02 12:05

Title

Heap Use-After-Free in the PKCS7_verify() Function

Summary

Issue summary: A specially crafted PKCS#7 or S/MIME signed message could trigger a use-after-free during PKCS#7 signature verification. Impact summary: A use-after-free may result in process crashes, heap corruption, or potentially remote code execution. When processing a PKCS#7 or S/MIME signed message, if the SignedData digestAlgorithms field is present as an empty ASN.1 SET, OpenSSL may incorrectly free a caller-owned BIO during PKCS7_verify(). A subsequent use of the BIO by the calling application results in a use-after-free condition. In the common case this occurs when the application later calls BIO_free() on the BIO originally passed to PKCS7_verify(). Depending on allocator behavior and application-specific BIO usage patterns, this may result in a crash or other memory corruption. In some application contexts this may potentially be exploitable for remote code execution. Applications that process PKCS#7 or S/MIME signed messages using OpenSSL PKCS#7 APIs may be affected. Applications using the CMS APIs for this processing are not affected. The FIPS modules in 4.0, 3.6, 3.5, 3.4, and 3.0 are not affected by this issue, as the affected code is outside the OpenSSL FIPS module boundary.

Severity

8.8 (High)


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

8.1 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator (v2.0.3)

CWE

CWE-416 - Use After Free
CWE-825 - Expired Pointer Dereference

Assigner

openssl

References

15 references

URL	Tags
https://openssl-library.org/news/secadv/20260609.txt	vendor-advisory
https://github.com/openssl/openssl/commit/3aad5eb…	patch
https://github.com/openssl/openssl/commit/c505d75…	patch
https://github.com/openssl/openssl/commit/7d4a980…	patch
https://github.com/openssl/openssl/commit/a541ae8…	patch
https://github.com/openssl/openssl/commit/9dfd688…	patch
https://access.redhat.com/security/cve/CVE-2026-45447	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2481898	issue-trackingx_refsource_REDHAT
https://security.access.redhat.com/data/csaf/v2/v…	x_sadp-csaf-vex
https://access.redhat.com/errata/RHSA-2026:25237	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:25239	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:26275	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:29197	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:34102	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:26319	vendor-advisoryx_refsource_REDHAT

Impacted products

18 products

Vendor	Product	Version
OpenSSL	OpenSSL	Affected: 4.0.0 , < 4.0.1 (semver) Affected: 3.6.0 , < 3.6.3 (semver) Affected: 3.5.0 , < 3.5.7 (semver) Affected: 3.4.0 , < 3.4.6 (semver) Affected: 3.0.0 , < 3.0.21 (semver) Affected: 1.1.1 , < 1.1.1zh (custom) Affected: 1.0.2 , < 1.0.2zq (custom)
Red Hat	Red Hat Enterprise Linux AppStream (v. 10)	cpe:/o:redhat:enterprise_linux:10.2
Red Hat	Red Hat Enterprise Linux AppStream (v. 9)	cpe:/a:redhat:enterprise_linux:9::appstream
Red Hat	Red Hat Enterprise Linux BaseOS (v. 10)	cpe:/o:redhat:enterprise_linux:10.2
Red Hat	Red Hat Enterprise Linux BaseOS (v. 8)	cpe:/o:redhat:enterprise_linux:8::baseos
Red Hat	Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.6)	cpe:/o:redhat:rhel_eus_long_life:8.6::baseos
Red Hat	Red Hat Enterprise Linux BaseOS E4S (v.8.8)	cpe:/o:redhat:rhel_e4s:8.8::baseos
Red Hat	Red Hat Enterprise Linux BaseOS TUS (v.8.8)	cpe:/o:redhat:rhel_tus:8.8::baseos
Red Hat	Red Hat Enterprise Linux BaseOS (v. 9)	cpe:/o:redhat:enterprise_linux:9::baseos
Red Hat	Red Hat Discovery 2	cpe:/a:redhat:discovery:2::el9
Red Hat	Red Hat Insights proxy 1.5	cpe:/a:redhat:insights_proxy:1.5::el9
Red Hat	Red Hat Update Infrastructure 5	cpe:/a:redhat:rhui:5::el9
Red Hat	Red Hat Enterprise Linux 6	cpe:/o:redhat:enterprise_linux:6
Red Hat	Red Hat Enterprise Linux 7	cpe:/o:redhat:enterprise_linux:7
Red Hat	Red Hat Enterprise Linux 8	cpe:/o:redhat:enterprise_linux:8
Red Hat	Red Hat Enterprise Linux 9	cpe:/o:redhat:enterprise_linux:9
Red Hat	Red Hat OpenShift Container Platform 4	cpe:/a:redhat:openshift:4
Red Hat	Red Hat Enterprise Linux 10	cpe:/o:redhat:enterprise_linux:10

Date Public

2026-06-09 14:00

Credits

Thai Duong (Calif.io in collaboration with Claude and Anthropic Research) Igor Ustinov

Show details on NVD website

JSON

To clipboard

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            "url": "https://access.redhat.com/errata/RHSA-2026:29197"
          },
          {
            "tags": [
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              "x_refsource_REDHAT"
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            "url": "https://access.redhat.com/errata/RHSA-2026:34102"
          },
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            ],
            "url": "https://access.redhat.com/errata/RHSA-2026:26319"
          }
        ],
        "solutions": [
          {
            "lang": "en",
            "value": "RHSA-2026:25237: Red Hat Enterprise Linux AppStream (v. 10), Red Hat Enterprise Linux BaseOS (v. 10)"
          },
          {
            "lang": "en",
            "value": "RHSA-2026:25239: Red Hat Enterprise Linux AppStream (v. 9), Red Hat Enterprise Linux BaseOS (v. 9)"
          },
          {
            "lang": "en",
            "value": "RHSA-2026:26275: Red Hat Enterprise Linux BaseOS (v. 8), Red Hat Enterprise Linux BaseOS E4S (v.8.8), Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.6), Red Hat Enterprise Linux BaseOS TUS (v.8.8)"
          },
          {
            "lang": "en",
            "value": "RHSA-2026:29197: Red Hat Discovery 2"
          },
          {
            "lang": "en",
            "value": "RHSA-2026:34102: Red Hat Insights proxy 1.5"
          },
          {
            "lang": "en",
            "value": "RHSA-2026:26319: Red Hat Update Infrastructure 5"
          }
        ],
        "timeline": [
          {
            "lang": "en",
            "time": "2026-05-27T14:17:46.000Z",
            "value": "Reported to Red Hat."
          },
          {
            "lang": "en",
            "time": "2026-06-09T00:00:00.000Z",
            "value": "Made public."
          }
        ],
        "title": "openssl: Heap Use-After-Free in OpenSSL PKCS7_verify()",
        "workarounds": [
          {
            "lang": "en",
            "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability."
          }
        ],
        "x_adpType": "supplier",
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    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "OpenSSL",
          "vendor": "OpenSSL",
          "versions": [
            {
              "lessThan": "4.0.1",
              "status": "affected",
              "version": "4.0.0",
              "versionType": "semver"
            },
            {
              "lessThan": "3.6.3",
              "status": "affected",
              "version": "3.6.0",
              "versionType": "semver"
            },
            {
              "lessThan": "3.5.7",
              "status": "affected",
              "version": "3.5.0",
              "versionType": "semver"
            },
            {
              "lessThan": "3.4.6",
              "status": "affected",
              "version": "3.4.0",
              "versionType": "semver"
            },
            {
              "lessThan": "3.0.21",
              "status": "affected",
              "version": "3.0.0",
              "versionType": "semver"
            },
            {
              "lessThan": "1.1.1zh",
              "status": "affected",
              "version": "1.1.1",
              "versionType": "custom"
            },
            {
              "lessThan": "1.0.2zq",
              "status": "affected",
              "version": "1.0.2",
              "versionType": "custom"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "Thai Duong (Calif.io in collaboration with Claude and Anthropic Research)"
        },
        {
          "lang": "en",
          "type": "remediation developer",
          "value": "Igor Ustinov"
        }
      ],
      "datePublic": "2026-06-09T14:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "Issue summary: A specially crafted PKCS#7 or S/MIME signed message could\u003cbr\u003etrigger a use-after-free during PKCS#7 signature verification.\u003cbr\u003e\u003cbr\u003eImpact summary: A use-after-free may result in process crashes, heap\u003cbr\u003ecorruption, or potentially remote code execution.\u003cbr\u003e\u003cbr\u003eWhen processing a PKCS#7 or S/MIME signed message, if the SignedData\u003cbr\u003edigestAlgorithms field is present as an empty ASN.1 SET, OpenSSL may\u003cbr\u003eincorrectly free a caller-owned BIO during PKCS7_verify(). A subsequent\u003cbr\u003euse of the BIO by the calling application results in a use-after-free\u003cbr\u003econdition.\u003cbr\u003e\u003cbr\u003eIn the common case this occurs when the application later calls\u003cbr\u003eBIO_free() on the BIO originally passed to PKCS7_verify(). Depending\u003cbr\u003eon allocator behavior and application-specific BIO usage patterns, this\u003cbr\u003emay result in a crash or other memory corruption. In some application\u003cbr\u003econtexts this may potentially be exploitable for remote code execution.\u003cbr\u003e\u003cbr\u003eApplications that process PKCS#7 or S/MIME signed messages using OpenSSL\u003cbr\u003ePKCS#7 APIs may be affected. Applications using the CMS APIs for this\u003cbr\u003eprocessing are not affected.\u003cbr\u003e\u003cbr\u003eThe FIPS modules in 4.0, 3.6, 3.5, 3.4, and 3.0 are not affected by this\u003cbr\u003eissue, as the affected code is outside the OpenSSL FIPS module boundary."
            }
          ],
          "value": "Issue summary: A specially crafted PKCS#7 or S/MIME signed message could\ntrigger a use-after-free during PKCS#7 signature verification.\n\nImpact summary: A use-after-free may result in process crashes, heap\ncorruption, or potentially remote code execution.\n\nWhen processing a PKCS#7 or S/MIME signed message, if the SignedData\ndigestAlgorithms field is present as an empty ASN.1 SET, OpenSSL may\nincorrectly free a caller-owned BIO during PKCS7_verify(). A subsequent\nuse of the BIO by the calling application results in a use-after-free\ncondition.\n\nIn the common case this occurs when the application later calls\nBIO_free() on the BIO originally passed to PKCS7_verify(). Depending\non allocator behavior and application-specific BIO usage patterns, this\nmay result in a crash or other memory corruption. In some application\ncontexts this may potentially be exploitable for remote code execution.\n\nApplications that process PKCS#7 or S/MIME signed messages using OpenSSL\nPKCS#7 APIs may be affected. Applications using the CMS APIs for this\nprocessing are not affected.\n\nThe FIPS modules in 4.0, 3.6, 3.5, 3.4, and 3.0 are not affected by this\nissue, as the affected code is outside the OpenSSL FIPS module boundary."
        }
      ],
      "metrics": [
        {
          "format": "other",
          "other": {
            "content": {
              "text": "High"
            },
            "type": "https://openssl-library.org/policies/general/security-policy/"
          }
        }
      ],
      "problemTypes": [
        {
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            {
              "cweId": "CWE-416",
              "description": "CWE-416 Use After Free",
              "lang": "en",
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        "dateUpdated": "2026-06-10T07:48:15.381Z",
        "orgId": "3a12439a-ef3a-4c79-92e6-6081a721f1e5",
        "shortName": "openssl"
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      "references": [
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          "name": "OpenSSL Advisory",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://openssl-library.org/news/secadv/20260609.txt"
        },
        {
          "name": "4.0.1 git commit",
          "tags": [
            "patch"
          ],
          "url": "https://github.com/openssl/openssl/commit/3aad5eb7af4de4ee0633c30a8541a54d9bbde63c"
        },
        {
          "name": "3.6.3 git commit",
          "tags": [
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          "url": "https://github.com/openssl/openssl/commit/c505d7559da5d5f9f2c3913c6883a5562ce7273e"
        },
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          "url": "https://github.com/openssl/openssl/commit/7d4a980c62258c5910cc883936e0c8dbab4d75a8"
        },
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          "url": "https://github.com/openssl/openssl/commit/a541ae8bfe849a30cc885e8780715c0f488e496c"
        },
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          "tags": [
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          ],
          "url": "https://github.com/openssl/openssl/commit/9dfd688ad2290fc5075cacbc9bf0c9a93eefed54"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "Heap Use-After-Free in the PKCS7_verify() Function",
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  "cveMetadata": {
    "assignerOrgId": "3a12439a-ef3a-4c79-92e6-6081a721f1e5",
    "assignerShortName": "openssl",
    "cveId": "CVE-2026-45447",
    "datePublished": "2026-06-09T16:03:32.914Z",
    "dateReserved": "2026-05-12T14:34:06.277Z",
    "dateUpdated": "2026-07-02T12:05:25.879Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

CERTFR-2026-AVI-0782

Solutions

CVE-2026-43414 (GCVE-0-2026-43414)

CVE-2026-43455 (GCVE-0-2026-43455)

CVE-2026-43470 (GCVE-0-2026-43470)

CVE-2026-43483 (GCVE-0-2026-43483)

CVE-2026-43499 (GCVE-0-2026-43499)

CVE-2026-43501 (GCVE-0-2026-43501)

CVE-2026-43503 (GCVE-0-2026-43503)

CVE-2026-45445 (GCVE-0-2026-45445)

CVE-2026-45446 (GCVE-0-2026-45446)

CVE-2026-45447 (GCVE-0-2026-45447)

Tags

Sightings

Nomenclature