CVE-2026-97989

Что произошло

In the Linux kernel, the following vulnerability has been resolved: vduse: validate virtqueue alignment vduse_validate_config() only checks the upper bound of vq_align. Invalid values can therefore reach vring_create_virtqueue_map(). The split-ring helpers use align - 1 as a bit mask, so the alignment must be a non-zero power of two. A zero value makes vring_size() drop the descriptor and available-ring part and vring_init() leave the used ring pointer NULL. The VIRTIO spec requires the used ring to start at an address aligned to at least 4 bytes. Reject values below VRING_USED_ALIGN_SIZE as well as non-power-of-two values before they reach the virtio ring helpers. Opening a virtio-net device created with vq_align=0 triggered: BUG: KASAN: null-ptr-deref in virtqueue_kick_prepare_split+0xe3/0x100 Read of size 2 at addr 0000000000000000 by task systemd-network/1062 Call Trace (relevant frames): dump_stack_lvl print_report kasan_report __asan_load2 virtqueue_kick_prepare_split+0xe3/0x100 virtqueue_kick_prepare+0x40/0x60 try_fill_recv+0x857/0x1250 virtnet_open+0x189/0x460 __dev_open+0x225/0x390 __dev_change_flags+0x368/0x3b0 netif_change_flags+0x56/0xc0 do_setlink.isra.0+0x68c/0x1e30 Validate the value before it reaches the virtio ring helpers.

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": "c8a6153b6c59d95c0e091f053f6f180952ade91e",
  "lessThan": "650bac9c73d3b4d83be683028283654c05346556",
  "versionType": "git"
}

{
  "status": "affected",
  "version": "c8a6153b6c59d95c0e091f053f6f180952ade91e",
  "lessThan": "5d4bdca17d87c90b1d888f8846a781a18aa453c9",
  "versionType": "git"
}

{
  "status": "affected",
  "version": "c8a6153b6c59d95c0e091f053f6f180952ade91e",
  "lessThan": "831dab9b9bcc184adf78f18b5b788316e3174aec",
  "versionType": "git"
}

{
  "status": "affected",
  "version": "c8a6153b6c59d95c0e091f053f6f180952ade91e",
  "lessThan": "c3c3b0839a1197530cc18f535062fc84dbdfc885",
  "versionType": "git"
}

{
  "status": "affected",
  "version": "c8a6153b6c59d95c0e091f053f6f180952ade91e",
  "lessThan": "fa2c25b4add57888acfa89e398389e267bff3dcf",
  "versionType": "git"
}

{
  "status": "affected",
  "version": "5.15"
}

{
  "status": "unaffected",
  "version": "0",
  "lessThan": "5.15",
  "versionType": "semver"
}

{
  "status": "unaffected",
  "version": "6.6.160",
  "versionType": "semver",
  "lessThanOrEqual": "6.6.*"
}

{
  "status": "unaffected",
  "version": "6.12.114",
  "versionType": "semver",
  "lessThanOrEqual": "6.12.*"
}

{
  "status": "unaffected",
  "version": "6.18.57",
  "versionType": "semver",
  "lessThanOrEqual": "6.18.*"
}

{
  "status": "unaffected",
  "version": "7.2.7",
  "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": "2026-11-01T21:13:18.946859+00:00"
  },
  "title": {
    "source": "cve",
    "received_at": "2026-10-28T21:32:04.401157+00:00"
  },
  "scores": [],
  "status": {
    "source": "cve",
    "received_at": "2026-10-28T21:32:04.401157+00:00"
  },
  "affected": [
    "cve"
  ],
  "published": {
    "source": "cve",
    "received_at": "2026-10-28T21:32:04.401157+00:00"
  },
  "solutions": [],
  "percentile": {
    "source": "epss",
    "received_at": "2026-11-01T21:13:18.946859+00:00"
  },
  "references": [
    "cve"
  ],
  "description": {
    "source": "cve",
    "received_at": "2026-10-28T21:32:04.401157+00:00"
  },
  "workarounds": [],
  "configurations": []
}

Хронология записи

1. Данные обновлены02.11.2026, 00:13
2. Данные обновлены31.10.2026, 12:00
3. Данные обновлены29.10.2026, 12:47
4. Опубликована29.10.2026, 00:32

Личная заметка и статус

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