CVE-2026-98289

Что произошло

In the Linux kernel, the following vulnerability has been resolved: af_unix: Unify scc_index when finalising SCC in __unix_walk_scc(). Commit bfdb01283ee8 ("af_unix: Assign a unique index to SCC.") changed Tarjan's algorithm to update lowlink with lowlink, which is called lowpoint (unix_vertex.scc_index). unix_vertex_dead() assumes all vertices in an SCC share the same lowpoint, but this is not always true if an SCC has two or more back edges, depending on the order of DFS. For example, the graph below has two back edges from B to A and from C to B. A --> B --> C ^ | ^ | `----' `----' If DFS walks through A -> B -> C -> B (-> C -> B) -> A (-> B -> A), each index and scc_index will be updated as follows. A --> B --> C C = (3, 3) (index, scc_index) B = (2, 2) A = (1, 1) A ... B ... C C = (3, 2) B --> C ^ | ^ | `----' `----' 2 4 Let's unify scc_index across the SCC when finalising it. Note that updating v->index was previously done in unix_scc_dead(), when called from __unix_walk_scc(), just to save one loop. Since __unix_walk_scc() now iterates over the SCC anyway, the update is moved back to __unix_walk_scc() and 'fast' argument is dropped.

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": "4090fa373f0e763c43610853d2774b5979915959",
  "lessThan": "b8f71d69380a5fbc734c868acbeb560f1de1766f",
  "versionType": "git"
}

{
  "status": "affected",
  "version": "4090fa373f0e763c43610853d2774b5979915959",
  "lessThan": "be550ee108ad80828aa61280400bedfc7e7c39d3",
  "versionType": "git"
}

{
  "status": "affected",
  "version": "4090fa373f0e763c43610853d2774b5979915959",
  "lessThan": "4a4263dfeabad72f95e8ab6e15146861fa4144dd",
  "versionType": "git"
}

{
  "status": "affected",
  "version": "5dfd283f4651d04dbb70ceb9ae5c4a30eda3c52a",
  "versionType": "git"
}

{
  "status": "affected",
  "version": "de7921631ff323369aa63a4324695ab54ea4047e",
  "versionType": "git"
}

{
  "status": "affected",
  "version": "6.1.141",
  "lessThan": "6.2",
  "versionType": "semver"
}

{
  "status": "affected",
  "version": "6.6.93",
  "lessThan": "6.7",
  "versionType": "semver"
}

{
  "status": "affected",
  "version": "6.10"
}

{
  "status": "unaffected",
  "version": "0",
  "lessThan": "6.10",
  "versionType": "semver"
}

{
  "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": "2026-11-02T21:15:46.196713+00:00"
  },
  "title": {
    "source": "cve",
    "received_at": "2026-10-28T20:13:06.382014+00:00"
  },
  "scores": [],
  "status": {
    "source": "cve",
    "received_at": "2026-10-28T20:13:06.382014+00:00"
  },
  "affected": [
    "cve"
  ],
  "published": {
    "source": "cve",
    "received_at": "2026-10-28T20:13:06.382014+00:00"
  },
  "solutions": [],
  "percentile": {
    "source": "epss",
    "received_at": "2026-11-02T21:15:46.196713+00:00"
  },
  "references": [
    "cve"
  ],
  "description": {
    "source": "cve",
    "received_at": "2026-10-28T20:13:06.382014+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, 23:13

Личная заметка и статус

Другие CVE того же продукта