SUSE-SU-2026:0945-1

Vulnerability from csaf_suse - Published: 2026-03-20 13:41 - Updated: 2026-03-20 13:41
Summary
Security update for
Severity
Important
Notes
Title of the patch: Security update for
Description of the patch: This update for the SUSE Linux Enterprise Kernel 6.4.0-150700.7.28 fixes various security issues The following security issues were fixed: - CVE-2025-68284: libceph: prevent potential out-of-bounds writes in handle_auth_session_key() (bsc#1255378). - CVE-2025-68285: libceph: fix potential use-after-free in have_mon_and_osd_map() (bsc#1255402). - CVE-2025-68813: ipvs: fix ipv4 null-ptr-deref in route error path (bsc#1256644). - CVE-2025-71085: ipv6: BUG() in pskb_expand_head() as part of calipso_skbuff_setattr() (bsc#1256624).
Patchnames: SUSE-2026-945,SUSE-SLE-Module-Live-Patching-15-SP7-2026-945
Terms of use: CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).
CVE-2025-68284
7.3 (High)
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Vendor Fix To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
CVE-2025-68285
7 (High)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Vendor Fix To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
CVE-2025-68813
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Vendor Fix To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
CVE-2025-71085
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Vendor Fix To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
References
To clipboard 

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          "text": "https://www.suse.com/security/cve/CVE-2025-68284"
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      "notes": [
        {
          "category": "general",
          "text": "In the Linux kernel, the following vulnerability has been resolved:\n\nlibceph: prevent potential out-of-bounds writes in handle_auth_session_key()\n\nThe len field originates from untrusted network packets. Boundary\nchecks have been added to prevent potential out-of-bounds writes when\ndecrypting the connection secret or processing service tickets.\n\n[ idryomov: changelog ]",
          "title": "CVE description"
        }
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          "text": "https://www.suse.com/security/cve/CVE-2025-68285"
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      "notes": [
        {
          "category": "general",
          "text": "In the Linux kernel, the following vulnerability has been resolved:\n\nlibceph: fix potential use-after-free in have_mon_and_osd_map()\n\nThe wait loop in __ceph_open_session() can race with the client\nreceiving a new monmap or osdmap shortly after the initial map is\nreceived.  Both ceph_monc_handle_map() and handle_one_map() install\na new map immediately after freeing the old one\n\n    kfree(monc-\u003emonmap);\n    monc-\u003emonmap = monmap;\n\n    ceph_osdmap_destroy(osdc-\u003eosdmap);\n    osdc-\u003eosdmap = newmap;\n\nunder client-\u003emonc.mutex and client-\u003eosdc.lock respectively, but\nbecause neither is taken in have_mon_and_osd_map() it\u0027s possible for\nclient-\u003emonc.monmap-\u003eepoch and client-\u003eosdc.osdmap-\u003eepoch arms in\n\n    client-\u003emonc.monmap \u0026\u0026 client-\u003emonc.monmap-\u003eepoch \u0026\u0026\n        client-\u003eosdc.osdmap \u0026\u0026 client-\u003eosdc.osdmap-\u003eepoch;\n\ncondition to dereference an already freed map.  This happens to be\nreproducible with generic/395 and generic/397 with KASAN enabled:\n\n    BUG: KASAN: slab-use-after-free in have_mon_and_osd_map+0x56/0x70\n    Read of size 4 at addr ffff88811012d810 by task mount.ceph/13305\n    CPU: 2 UID: 0 PID: 13305 Comm: mount.ceph Not tainted 6.14.0-rc2-build2+ #1266\n    ...\n    Call Trace:\n    \u003cTASK\u003e\n    have_mon_and_osd_map+0x56/0x70\n    ceph_open_session+0x182/0x290\n    ceph_get_tree+0x333/0x680\n    vfs_get_tree+0x49/0x180\n    do_new_mount+0x1a3/0x2d0\n    path_mount+0x6dd/0x730\n    do_mount+0x99/0xe0\n    __do_sys_mount+0x141/0x180\n    do_syscall_64+0x9f/0x100\n    entry_SYSCALL_64_after_hwframe+0x76/0x7e\n    \u003c/TASK\u003e\n\n    Allocated by task 13305:\n    ceph_osdmap_alloc+0x16/0x130\n    ceph_osdc_init+0x27a/0x4c0\n    ceph_create_client+0x153/0x190\n    create_fs_client+0x50/0x2a0\n    ceph_get_tree+0xff/0x680\n    vfs_get_tree+0x49/0x180\n    do_new_mount+0x1a3/0x2d0\n    path_mount+0x6dd/0x730\n    do_mount+0x99/0xe0\n    __do_sys_mount+0x141/0x180\n    do_syscall_64+0x9f/0x100\n    entry_SYSCALL_64_after_hwframe+0x76/0x7e\n\n    Freed by task 9475:\n    kfree+0x212/0x290\n    handle_one_map+0x23c/0x3b0\n    ceph_osdc_handle_map+0x3c9/0x590\n    mon_dispatch+0x655/0x6f0\n    ceph_con_process_message+0xc3/0xe0\n    ceph_con_v1_try_read+0x614/0x760\n    ceph_con_workfn+0x2de/0x650\n    process_one_work+0x486/0x7c0\n    process_scheduled_works+0x73/0x90\n    worker_thread+0x1c8/0x2a0\n    kthread+0x2ec/0x300\n    ret_from_fork+0x24/0x40\n    ret_from_fork_asm+0x1a/0x30\n\nRewrite the wait loop to check the above condition directly with\nclient-\u003emonc.mutex and client-\u003eosdc.lock taken as appropriate.  While\nat it, improve the timeout handling (previously mount_timeout could be\nexceeded in case wait_event_interruptible_timeout() slept more than\nonce) and access client-\u003eauth_err under client-\u003emonc.mutex to match\nhow it\u0027s set in finish_auth().\n\nmonmap_show() and osdmap_show() now take the respective lock before\naccessing the map as well.",
          "title": "CVE description"
        }
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      "references": [
        {
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          "summary": "CVE-2025-68285",
          "url": "https://www.suse.com/security/cve/CVE-2025-68285"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1255401 for CVE-2025-68285",
          "url": "https://bugzilla.suse.com/1255401"
        },
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          "url": "https://bugzilla.suse.com/1255402"
        }
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          ]
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      ],
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            "baseScore": 7,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
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          "date": "2026-03-20T13:41:40Z",
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        }
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      "title": "CVE-2025-68285"
    },
    {
      "cve": "CVE-2025-68813",
      "ids": [
        {
          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2025-68813"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "In the Linux kernel, the following vulnerability has been resolved:\n\nipvs: fix ipv4 null-ptr-deref in route error path\n\nThe IPv4 code path in __ip_vs_get_out_rt() calls dst_link_failure()\nwithout ensuring skb-\u003edev is set, leading to a NULL pointer dereference\nin fib_compute_spec_dst() when ipv4_link_failure() attempts to send\nICMP destination unreachable messages.\n\nThe issue emerged after commit ed0de45a1008 (\"ipv4: recompile ip options\nin ipv4_link_failure\") started calling __ip_options_compile() from\nipv4_link_failure(). This code path eventually calls fib_compute_spec_dst()\nwhich dereferences skb-\u003edev. An attempt was made to fix the NULL skb-\u003edev\ndereference in commit 0113d9c9d1cc (\"ipv4: fix null-deref in\nipv4_link_failure\"), but it only addressed the immediate dev_net(skb-\u003edev)\ndereference by using a fallback device. The fix was incomplete because\nfib_compute_spec_dst() later in the call chain still accesses skb-\u003edev\ndirectly, which remains NULL when IPVS calls dst_link_failure().\n\nThe crash occurs when:\n1. IPVS processes a packet in NAT mode with a misconfigured destination\n2. Route lookup fails in __ip_vs_get_out_rt() before establishing a route\n3. The error path calls dst_link_failure(skb) with skb-\u003edev == NULL\n4. ipv4_link_failure() -\u003e ipv4_send_dest_unreach() -\u003e\n   __ip_options_compile() -\u003e fib_compute_spec_dst()\n5. fib_compute_spec_dst() dereferences NULL skb-\u003edev\n\nApply the same fix used for IPv6 in commit 326bf17ea5d4 (\"ipvs: fix\nipv6 route unreach panic\"): set skb-\u003edev from skb_dst(skb)-\u003edev before\ncalling dst_link_failure().\n\nKASAN: null-ptr-deref in range [0x0000000000000328-0x000000000000032f]\nCPU: 1 PID: 12732 Comm: syz.1.3469 Not tainted 6.6.114 #2\nRIP: 0010:__in_dev_get_rcu include/linux/inetdevice.h:233\nRIP: 0010:fib_compute_spec_dst+0x17a/0x9f0 net/ipv4/fib_frontend.c:285\nCall Trace:\n  \u003cTASK\u003e\n  spec_dst_fill net/ipv4/ip_options.c:232\n  spec_dst_fill net/ipv4/ip_options.c:229\n  __ip_options_compile+0x13a1/0x17d0 net/ipv4/ip_options.c:330\n  ipv4_send_dest_unreach net/ipv4/route.c:1252\n  ipv4_link_failure+0x702/0xb80 net/ipv4/route.c:1265\n  dst_link_failure include/net/dst.h:437\n  __ip_vs_get_out_rt+0x15fd/0x19e0 net/netfilter/ipvs/ip_vs_xmit.c:412\n  ip_vs_nat_xmit+0x1d8/0xc80 net/netfilter/ipvs/ip_vs_xmit.c:764",
          "title": "CVE description"
        }
      ],
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          "category": "external",
          "summary": "CVE-2025-68813",
          "url": "https://www.suse.com/security/cve/CVE-2025-68813"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1256641 for CVE-2025-68813",
          "url": "https://bugzilla.suse.com/1256641"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1256644 for CVE-2025-68813",
          "url": "https://bugzilla.suse.com/1256644"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
          "product_ids": [
            "SUSE Linux Enterprise Live Patching 15 SP7:kernel-livepatch-6_4_0-150700_7_28-rt-2-150700.2.1.x86_64"
          ]
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      ],
      "scores": [
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          "cvss_v3": {
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
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          ]
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          "date": "2026-03-20T13:41:40Z",
          "details": "important"
        }
      ],
      "title": "CVE-2025-68813"
    },
    {
      "cve": "CVE-2025-71085",
      "ids": [
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          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2025-71085"
        }
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      "notes": [
        {
          "category": "general",
          "text": "In the Linux kernel, the following vulnerability has been resolved:\n\nipv6: BUG() in pskb_expand_head() as part of calipso_skbuff_setattr()\n\nThere exists a kernel oops caused by a BUG_ON(nhead \u003c 0) at\nnet/core/skbuff.c:2232 in pskb_expand_head().\nThis bug is triggered as part of the calipso_skbuff_setattr()\nroutine when skb_cow() is passed headroom \u003e INT_MAX\n(i.e. (int)(skb_headroom(skb) + len_delta) \u003c 0).\n\nThe root cause of the bug is due to an implicit integer cast in\n__skb_cow(). The check (headroom \u003e skb_headroom(skb)) is meant to ensure\nthat delta = headroom - skb_headroom(skb) is never negative, otherwise\nwe will trigger a BUG_ON in pskb_expand_head(). However, if\nheadroom \u003e INT_MAX and delta \u003c= -NET_SKB_PAD, the check passes, delta\nbecomes negative, and pskb_expand_head() is passed a negative value for\nnhead.\n\nFix the trigger condition in calipso_skbuff_setattr(). Avoid passing\n\"negative\" headroom sizes to skb_cow() within calipso_skbuff_setattr()\nby only using skb_cow() to grow headroom.\n\nPoC:\n\tUsing `netlabelctl` tool:\n\n        netlabelctl map del default\n        netlabelctl calipso add pass doi:7\n        netlabelctl map add default address:0::1/128 protocol:calipso,7\n\n        Then run the following PoC:\n\n        int fd = socket(AF_INET6, SOCK_DGRAM, IPPROTO_UDP);\n\n        // setup msghdr\n        int cmsg_size = 2;\n        int cmsg_len = 0x60;\n        struct msghdr msg;\n        struct sockaddr_in6 dest_addr;\n        struct cmsghdr * cmsg = (struct cmsghdr *) calloc(1,\n                        sizeof(struct cmsghdr) + cmsg_len);\n        msg.msg_name = \u0026dest_addr;\n        msg.msg_namelen = sizeof(dest_addr);\n        msg.msg_iov = NULL;\n        msg.msg_iovlen = 0;\n        msg.msg_control = cmsg;\n        msg.msg_controllen = cmsg_len;\n        msg.msg_flags = 0;\n\n        // setup sockaddr\n        dest_addr.sin6_family = AF_INET6;\n        dest_addr.sin6_port = htons(31337);\n        dest_addr.sin6_flowinfo = htonl(31337);\n        dest_addr.sin6_addr = in6addr_loopback;\n        dest_addr.sin6_scope_id = 31337;\n\n        // setup cmsghdr\n        cmsg-\u003ecmsg_len = cmsg_len;\n        cmsg-\u003ecmsg_level = IPPROTO_IPV6;\n        cmsg-\u003ecmsg_type = IPV6_HOPOPTS;\n        char * hop_hdr = (char *)cmsg + sizeof(struct cmsghdr);\n        hop_hdr[1] = 0x9; //set hop size - (0x9 + 1) * 8 = 80\n\n        sendmsg(fd, \u0026msg, 0);",
          "title": "CVE description"
        }
      ],
      "product_status": {
        "recommended": [
          "SUSE Linux Enterprise Live Patching 15 SP7:kernel-livepatch-6_4_0-150700_7_28-rt-2-150700.2.1.x86_64"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "CVE-2025-71085",
          "url": "https://www.suse.com/security/cve/CVE-2025-71085"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1256623 for CVE-2025-71085",
          "url": "https://bugzilla.suse.com/1256623"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1256624 for CVE-2025-71085",
          "url": "https://bugzilla.suse.com/1256624"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
          "product_ids": [
            "SUSE Linux Enterprise Live Patching 15 SP7:kernel-livepatch-6_4_0-150700_7_28-rt-2-150700.2.1.x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "SUSE Linux Enterprise Live Patching 15 SP7:kernel-livepatch-6_4_0-150700_7_28-rt-2-150700.2.1.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2026-03-20T13:41:40Z",
          "details": "important"
        }
      ],
      "title": "CVE-2025-71085"
    }
  ]
}


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Sightings

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  • 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.