CVE-2026-98231

Что произошло

In the Linux kernel, the following vulnerability has been resolved: xfrm: serialize state GC with device state flush The deferred-device pass in xfrm_dev_state_flush() finds states under xfrm_state_dev_gc_lock, but drops the lock before calling xfrm_dev_state_free() because the driver callback may sleep. The device GC list does not hold an xfrm_state reference, so the state GC worker can destroy the same state concurrently. The race can proceed as follows: CPU 0 CPU 1 find x on the device GC list drop xfrm_state_dev_gc_lock read x->xso.dev xfrm_state_gc_destroy(x) xfrm_dev_state_free(x) xfrm_state_free(x) continue xfrm_dev_state_free(x) Both paths can invoke the driver callback and drop the device reference. CPU 0 can also access the xfrm_state after CPU 1 has freed it. KASAN reported: BUG: KASAN: slab-use-after-free in xfrm_dev_state_free+0x24c/0x2a0 Read of size 8 at addr ffff88810bbaa960 by task poc/102 Call Trace: xfrm_dev_state_free+0x24c/0x2a0 xfrm_dev_state_flush+0x353/0x400 xfrm_dev_event+0x26d/0x3a0 notifier_call_chain+0xc0/0x280 __dev_notify_flags+0x169/0x250 netif_change_flags+0xe7/0x160 dev_change_flags+0x96/0x220 devinet_ioctl+0x7f4/0x1880 Allocated by task 87: xfrm_state_alloc+0x1e/0x5c0 xfrm_add_sa+0xe7f/0x5820 xfrm_user_rcv_msg+0x4f3/0x940 Freed by task 57: kmem_cache_free+0xcb/0x3d0 xfrm_state_gc_task+0x4a8/0x650 process_one_work+0x63a/0x1070 Serialize xfrm_state destruction against the deferred-device pass with a mutex. Keep xfrm_state_dev_gc_lock limited to list operations and retain the existing callback and device-reference release ordering.

Что делать

dpkg-query -W -f='${Package}	${Version}\n'

rpm -qa --qf '%{NAME}\t%{VERSION}-%{RELEASE}\n'

Get-HotFix | Select-Object HotFixID, InstalledOn

Продукты и затронутые версии

{
  "status": "affected",
  "version": "d5f53edd43daf3e6e1633a49c561387f8f99e13f",
  "lessThan": "937108dc0258d6ac69926b00bc53598c98986ee1",
  "versionType": "git"
}

{
  "status": "affected",
  "version": "07b87f9eea0c30675084d50c82532d20168da009",
  "lessThan": "39e41af3653ee45c985190dd97426f318918d201",
  "versionType": "git"
}

{
  "status": "affected",
  "version": "07b87f9eea0c30675084d50c82532d20168da009",
  "lessThan": "75fc4561772e2f9811abf39ed10443e6f4a4bc6c",
  "versionType": "git"
}

{
  "status": "affected",
  "version": "07b87f9eea0c30675084d50c82532d20168da009",
  "lessThan": "84e378395494963b1e581cf223a7cbeec8c0e2d6",
  "versionType": "git"
}

{
  "status": "affected",
  "version": "07b87f9eea0c30675084d50c82532d20168da009",
  "lessThan": "89fefad9f971bc637fb22373078144f2563c4be9",
  "versionType": "git"
}

{
  "status": "affected",
  "version": "8ecee44464a4926c9bef989a1490b7394785f584",
  "versionType": "git"
}

{
  "status": "affected",
  "version": "6.6.44",
  "lessThan": "6.6.158",
  "versionType": "semver"
}

{
  "status": "affected",
  "version": "6.10.3",
  "lessThan": "6.11",
  "versionType": "semver"
}

{
  "status": "affected",
  "version": "6.11"
}

{
  "status": "unaffected",
  "version": "0",
  "lessThan": "6.11",
  "versionType": "semver"
}

{
  "status": "unaffected",
  "version": "6.6.158",
  "versionType": "semver",
  "lessThanOrEqual": "6.6.*"
}

{
  "status": "unaffected",
  "version": "6.12.112",
  "versionType": "semver",
  "lessThanOrEqual": "6.12.*"
}

{
  "status": "unaffected",
  "version": "6.18.54",
  "versionType": "semver",
  "lessThanOrEqual": "6.18.*"
}

{
  "status": "unaffected",
  "version": "7.2.8",
  "versionType": "semver",
  "lessThanOrEqual": "7.2.*"
}

{
  "status": "unaffected",
  "version": "7.3",
  "versionType": "original_commit_for_fix",
  "lessThanOrEqual": "*"
}

CVSS: оценки и векторы

Оценка CVSS отсутствует.

Источники и ссылки

{
  "cwes": [],
  "epss": {
    "source": "epss",
    "received_at": "2026-11-02T21:15:46.190443+00:00"
  },
  "title": {
    "source": "cve",
    "received_at": "2026-10-28T20:15:08.251905+00:00"
  },
  "scores": [],
  "status": {
    "source": "cve",
    "received_at": "2026-10-28T20:15:08.251905+00:00"
  },
  "affected": [
    "cve"
  ],
  "published": {
    "source": "cve",
    "received_at": "2026-10-28T20:15:08.251905+00:00"
  },
  "solutions": [],
  "percentile": {
    "source": "epss",
    "received_at": "2026-11-02T21:15:46.190443+00:00"
  },
  "references": [
    "cve"
  ],
  "description": {
    "source": "cve",
    "received_at": "2026-10-28T20:15:08.251905+00:00"
  },
  "workarounds": [],
  "configurations": []
}

Хронология записи

1. Данные обновлены03.11.2026, 00:15
2. Данные обновлены02.11.2026, 00:13
3. Данные обновлены31.10.2026, 12:00
4. Данные обновлены29.10.2026, 12:47
5. Опубликована28.10.2026, 23:15

Личная заметка и статус

Другие CVE того же продукта