CVE-2026-99159

Что произошло

In the Linux kernel, the following vulnerability has been resolved: ring-buffer: Fix the sub-buffer array base in rb_meta_subbuf_idx() On a persistent ring buffer, rb_meta_subbuf_idx() can return an index one sub-buffer too high. rb_setup_ids_meta_page() then fills subbuf_ids[] shifted by one and leaves subbuf_ids[0] NULL, which __rb_map_vma() dereferences when userspace maps trace_pipe_raw. rb_update_meta_reader() writes two such indices into meta->buffers[], which rb_cpu_meta_valid() would reject on the next boot, discarding the previous boot's trace. A CPU's sub-buffer array starts after its meta header and the nr_subbufs integers that follow, aligned up to a sub-buffer. rb_meta_subbuf_idx() inverts that calculation but skips only the integers, not the header, so its base is one sub-buffer low whenever the omitted header size crosses the alignment boundary. Invert the calculation with rb_subbufs_from_meta() rather than repeating it. rb_range_buffer() maps an index back to an address through the same helper, so the two directions can no longer disagree.

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": "b14d032973d4e6c36e025e96ea3437de53d072d9",
  "lessThan": "0c0cf2240bb5ca5704ea932ba66ee54f43173915",
  "versionType": "git"
}

{
  "status": "affected",
  "version": "b14d032973d4e6c36e025e96ea3437de53d072d9",
  "lessThan": "2f1248b728b56d583ea454fedf239550c49f7b18",
  "versionType": "git"
}

{
  "status": "affected",
  "version": "b14d032973d4e6c36e025e96ea3437de53d072d9",
  "lessThan": "7469b3585ef5f65840d467d2caa811a9098c84b9",
  "versionType": "git"
}

{
  "status": "affected",
  "version": "b14d032973d4e6c36e025e96ea3437de53d072d9",
  "lessThan": "25132363c723afc39aace8b098f547ab4a0ea759",
  "versionType": "git"
}

{
  "status": "affected",
  "version": "6.12"
}

{
  "status": "unaffected",
  "version": "0",
  "lessThan": "6.12",
  "versionType": "semver"
}

{
  "status": "unaffected",
  "version": "6.12.115",
  "versionType": "semver",
  "lessThanOrEqual": "6.12.*"
}

{
  "status": "unaffected",
  "version": "6.18.59",
  "versionType": "semver",
  "lessThanOrEqual": "6.18.*"
}

{
  "status": "unaffected",
  "version": "7.2.13",
  "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": "2026-11-02T21:15:51.453182+00:00"
  },
  "title": {
    "source": "cve",
    "received_at": "2026-10-30T12:57:42.017429+00:00"
  },
  "scores": [],
  "status": {
    "source": "cve",
    "received_at": "2026-10-30T12:57:42.017429+00:00"
  },
  "affected": [
    "cve"
  ],
  "published": {
    "source": "cve",
    "received_at": "2026-10-30T12:57:42.017429+00:00"
  },
  "solutions": [],
  "percentile": {
    "source": "epss",
    "received_at": "2026-11-02T21:15:51.453182+00:00"
  },
  "references": [
    "cve",
    "ghsa",
    "nvd"
  ],
  "description": {
    "source": "cve",
    "received_at": "2026-10-30T12:57:42.017429+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 обновлены30.10.2026, 15:58
5. Данные обновлены28.10.2026, 23:51
6. Данные обновлены28.10.2026, 18:00
7. Опубликована28.10.2026, 15:17

Личная заметка и статус

Другие CVE того же продукта