CVE-2026-98925

Что произошло

In the Linux kernel, the following vulnerability has been resolved: bpf, sockmap: Fix self-redirect copied_seq double-counting When a BPF stream_verdict program redirects an skb back to the same socket (self-redirect with BPF_F_INGRESS), sk_psock_verdict_apply() calls tcp_eat_skb() which advances tcp_sk->copied_seq. However, the skb is then delivered to the socket's psock ingress queue and later read by tcp_bpf_recvmsg_parser(), which also advances copied_seq via the copied_from_self accounting path. This double-counting causes copied_seq to advance by 2x the actual data length, triggering: TCP recvmsg seq # bug 2: copied BF2E806, seq BF2E7FD, \ rcvnxt BF2E806, fl 0 WARNING: net/ipv4/tcp.c:2745 at tcp_recvmsg_locked+0x72b/0x2640 Call Trace: tcp_recvmsg+0x10a/0x500 sock_recvmsg+0x168/0x1d0 __sys_recvfrom+0x19a/0x2a0 __x64_sys_recvfrom+0xe4/0x1f0 do_syscall_64+0xf7/0x530 entry_SYSCALL_64_after_hwframe+0x77/0x7f cleanup rbuf bug: copied BF2E806 seq BF2E806 rcvnxt BF2E806 WARNING: net/ipv4/tcp.c:1609 at tcp_cleanup_rbuf+0xf2/0x1c0 Call Trace: tcp_recvmsg_locked+0x8d1/0x2640 tcp_recvmsg+0x10a/0x500 sock_recvmsg+0x168/0x1d0 __sys_recvfrom+0x19a/0x2a0 __x64_sys_recvfrom+0xe4/0x1f0 do_syscall_64+0xf7/0x530 entry_SYSCALL_64_after_hwframe+0x77/0x7f Fix this by converting self-redirect verdict to __SK_PASS at the beginning of sk_psock_verdict_apply(). This bypasses the __SK_REDIRECT case entirely (which calls sk_psock_eat_skb), letting the __SK_PASS path queue the skb to the psock ingress queue. The data is then read via tcp_bpf_recvmsg_parser(), which advances copied_seq exactly once through copied_from_self. Cross-socket redirects continue through __SK_REDIRECT with sk_psock_eat_skb() unchanged.

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": "fe735073a50eaa71aceb2e990827fe26f33cddd6",
  "lessThan": "cf9aefb26a071cb8b6fdd761c27e022a1184946d",
  "versionType": "git"
}

{
  "status": "affected",
  "version": "e5c6de5fa025882babf89cecbed80acf49b987fa",
  "lessThan": "dc98def81e3c629e25fcdd5753b1db93aab27ce9",
  "versionType": "git"
}

{
  "status": "affected",
  "version": "e5c6de5fa025882babf89cecbed80acf49b987fa",
  "lessThan": "ef6f2182fee6b9721c005ccfc6aec0a47f79bbfa",
  "versionType": "git"
}

{
  "status": "affected",
  "version": "e5c6de5fa025882babf89cecbed80acf49b987fa",
  "lessThan": "ae1ffd04e98beefbe5d83335d506b0bcd5c2a6b3",
  "versionType": "git"
}

{
  "status": "affected",
  "version": "e5c6de5fa025882babf89cecbed80acf49b987fa",
  "lessThan": "88942054191185c6f8bea5568cbb5614d1e99af9",
  "versionType": "git"
}

{
  "status": "affected",
  "version": "e5c6de5fa025882babf89cecbed80acf49b987fa",
  "lessThan": "490a83d6386eec1d29f470c8d7331677fb46c3b7",
  "versionType": "git"
}

{
  "status": "affected",
  "version": "f9b4a0b537be7a6e5f002ca64b09dcca9c14e6ed",
  "versionType": "git"
}

{
  "status": "affected",
  "version": "6.1.32",
  "lessThan": "6.1.189",
  "versionType": "semver"
}

{
  "status": "affected",
  "version": "6.3.6",
  "lessThan": "6.4",
  "versionType": "semver"
}

{
  "status": "affected",
  "version": "6.4"
}

{
  "status": "unaffected",
  "version": "0",
  "lessThan": "6.4",
  "versionType": "semver"
}

{
  "status": "unaffected",
  "version": "6.1.189",
  "versionType": "semver",
  "lessThanOrEqual": "6.1.*"
}

{
  "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": "6.18.55",
  "versionType": "semver",
  "lessThanOrEqual": "6.18.*"
}

{
  "status": "unaffected",
  "version": "7.2.9",
  "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": "2026-11-03T21:16:07.969578+00:00"
  },
  "title": {
    "source": "cve",
    "received_at": "2026-10-28T20:13:06.632022+00:00"
  },
  "scores": [],
  "status": {
    "source": "cve",
    "received_at": "2026-10-28T20:13:06.632022+00:00"
  },
  "affected": [
    "cve"
  ],
  "published": {
    "source": "cve",
    "received_at": "2026-10-28T20:13:06.632022+00:00"
  },
  "solutions": [],
  "percentile": {
    "source": "epss",
    "received_at": "2026-11-03T21:16:07.969578+00:00"
  },
  "references": [
    "cve"
  ],
  "description": {
    "source": "cve",
    "received_at": "2026-10-28T20:13:06.632022+00:00"
  },
  "workarounds": [],
  "configurations": []
}

Хронология записи

1. Данные обновлены04.11.2026, 00:16
2. Данные обновлены03.11.2026, 00:15
3. Данные обновлены02.11.2026, 00:13
4. Данные обновлены31.10.2026, 12:00
5. Данные обновлены29.10.2026, 12:47
6. Опубликована28.10.2026, 23:13

Личная заметка и статус

Другие CVE того же продукта