RLSA-2026:85321 (CVE-2026-31678)

Vulnerability from osv_rocky – Published: 2026-10-21 12:08 – Updated: 2026-10-22 00:12 – Source website
VLAI
Summary
Important: kernel security, bug fix, and enhancement update
Details

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

  • kernel: openvswitch: defer tunnel netdev_put to RCU release (CVE-2026-31678)

  • kernel: xfrm: espintcp: do not reuse an in-progress partial send (CVE-2026-52935)

  • kernel: sctp: diag: reject stale associations in dump_one path (CVE-2026-52917)

  • kernel: tipc: fix slab-use-after-free Read in tipc_aead_decrypt_done (CVE-2026-63801)

  • kernel: sctp: fix race between sctp_wait_for_connect and peeloff (CVE-2026-63971)

  • kernel: usb: typec: tcpm: bound altmode_desc[] per iteration in svdm_consume_modes() (CVE-2026-63962)

  • kernel: sctp: avoid auth_enable sysctl UAF during netns teardown (CVE-2026-68162)

  • kernel: tipc: clear sock->sk on the failed-insert path in tipc_sk_create() (CVE-2026-68117)

  • kernel: sctp: auth: verify auth requirement when auth_chunk is NULL (CVE-2026-68300)

  • kernel: sctp: validate stream count in sctp_process_strreset_inreq() (CVE-2026-68315)

  • kernel: Bluetooth: hci_sync: Fix advertising data UAFs (CVE-2026-74509)

  • kernel: sctp: keep chunk->transport in step with the list it is queued on (CVE-2026-74588)

  • kernel: sctp: validate cookie AUTH state before use (CVE-2026-74752)

  • kernel: smb: client: reject a tree connect response whose byte count is too small (CVE-2026-89631)

  • kernel: smb: client: fix OOB read/write from unvalidated DataOffset in coalesce_t2() (CVE-2026-89633)

  • kernel: signal: Prevent exec() race (CVE-2026-98256)

  • kernel: exec: Cleanup POSIX timers right after de_thread() (CVE-2026-98260)

Bug Fix(es) and Enhancement(s):

  • [10.2.z] kselftests: mm: hugepage-mremap: Bail out! mremap: Expected failure, but call succeeded (JIRA:Rocky Linux-181987)

  • [IBM 10.3 FEAT] zcrypt driver overwrite function - kernel part [rhel-10.2.z] (JIRA:Rocky Linux-245336)

  • Batch: z-stream xfrm - rhel-10.2.z (NST-Core-26W38) (JIRA:Rocky Linux-256678)

  • RHIVOS - [backport] S32G Driver Enablement - USB (JIRA:Rocky Linux-257228)

  • Fix pending kernel issues for L1VH GA - Kernel (JIRA:Rocky Linux-267038)

  • Backport 6785011f8b16 ("ipv4: validate checksum_start before completing checksum") [rhel-10.2.z] (JIRA:Rocky Linux-280590)

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.

Severity
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Credits
Rocky Enterprise Software Foundation
Red Hat
References
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "Rocky Linux:10",
        "name": "kernel",
        "purl": "pkg:rpm/rocky-linux/kernel?distro=rocky-linux-10\u0026epoch=0"
      },
      "ranges": [
        {
          "database_specific": {
            "yum_repository": "BaseOS"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0:6.12.0-211.67.1.el10_2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "credits": [
    {
      "name": "Rocky Enterprise Software Foundation"
    },
    {
      "name": "Red Hat"
    }
  ],
  "database_specific": {
    "license": "CC-BY-4.0",
    "license_url": "https://creativecommons.org/licenses/by/4.0/",
    "source_advisory": "RHSA-2026:85321"
  },
  "details": "The kernel packages contain the Linux kernel, the core of any Linux operating system.\n\nSecurity Fix(es):\n\n* kernel: openvswitch: defer tunnel netdev_put to RCU release (CVE-2026-31678)\n\n* kernel: xfrm: espintcp: do not reuse an in-progress partial send (CVE-2026-52935)\n\n* kernel: sctp: diag: reject stale associations in dump_one path (CVE-2026-52917)\n\n* kernel: tipc: fix slab-use-after-free Read in tipc_aead_decrypt_done (CVE-2026-63801)\n\n* kernel: sctp: fix race between sctp_wait_for_connect and peeloff (CVE-2026-63971)\n\n* kernel: usb: typec: tcpm: bound altmode_desc[] per iteration in svdm_consume_modes() (CVE-2026-63962)\n\n* kernel: sctp: avoid auth_enable sysctl UAF during netns teardown (CVE-2026-68162)\n\n* kernel: tipc: clear sock-\u003esk on the failed-insert path in tipc_sk_create() (CVE-2026-68117)\n\n* kernel: sctp: auth: verify auth requirement when auth_chunk is NULL (CVE-2026-68300)\n\n* kernel: sctp: validate stream count in sctp_process_strreset_inreq() (CVE-2026-68315)\n\n* kernel: Bluetooth: hci_sync: Fix advertising data UAFs (CVE-2026-74509)\n\n* kernel: sctp: keep chunk-\u003etransport in step with the list it is queued on (CVE-2026-74588)\n\n* kernel: sctp: validate cookie AUTH state before use (CVE-2026-74752)\n\n* kernel: smb: client: reject a tree connect response whose byte count is too small (CVE-2026-89631)\n\n* kernel: smb: client: fix OOB read/write from unvalidated DataOffset in coalesce_t2() (CVE-2026-89633)\n\n* kernel: signal: Prevent exec() race (CVE-2026-98256)\n\n* kernel: exec: Cleanup POSIX timers right after de_thread() (CVE-2026-98260)\n\nBug Fix(es) and Enhancement(s):\n\n* [10.2.z] kselftests: mm: hugepage-mremap: Bail out! mremap: Expected failure, but call succeeded (JIRA:Rocky Linux-181987)\n\n* [IBM 10.3 FEAT] zcrypt driver overwrite  function - kernel part [rhel-10.2.z] (JIRA:Rocky Linux-245336)\n\n* Batch: z-stream xfrm - rhel-10.2.z (NST-Core-26W38) (JIRA:Rocky Linux-256678)\n\n* RHIVOS - [backport] S32G Driver Enablement - USB (JIRA:Rocky Linux-257228)\n\n* Fix pending kernel issues for L1VH GA - Kernel (JIRA:Rocky Linux-267038)\n\n* Backport 6785011f8b16 (\"ipv4: validate checksum_start before completing checksum\") [rhel-10.2.z] (JIRA:Rocky Linux-280590)\n\nFor 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.",
  "id": "RLSA-2026:85321",
  "modified": "2026-10-22T00:12:15.518552Z",
  "published": "2026-10-21T12:08:03.045090Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://errata.rockylinux.org/RLSA-2026:85321"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2461761"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2492098"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2492115"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2502254"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2502331"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2502356"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2513314"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2513397"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2513408"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2513474"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2516967"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2521384"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2524422"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2532089"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2532230"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2546482"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2546491"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:85321"
    }
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Important: kernel security, bug fix, and enhancement update",
  "upstream": [
    "CVE-2026-31678",
    "CVE-2026-52917",
    "CVE-2026-52935",
    "CVE-2026-63801",
    "CVE-2026-63962",
    "CVE-2026-63971",
    "CVE-2026-68117",
    "CVE-2026-68162",
    "CVE-2026-68300",
    "CVE-2026-68315",
    "CVE-2026-74509",
    "CVE-2026-74588",
    "CVE-2026-74752",
    "CVE-2026-89631",
    "CVE-2026-89633",
    "CVE-2026-98256",
    "CVE-2026-98260"
  ]
}



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