Linux/Unix ホストには、ベンダーが提供するパッチが利用できない脆弱性の影響を受ける複数のパッケージがインストールされています。

  - Linux カーネルでは、以下の脆弱性が解決されています: bpf: avoid holding freeze_mutex during mmap operation We use map->freeze_mutex to prevent races between map_freeze() and memory mapping BPF map contents with writable permissions. The way we naively do this means we'll hold freeze_mutex for entire duration of all the mm and VMA manipulations, which is completely unnecessary. This can potentially also lead to deadlocks, as reported by syzbot in [0]. So, instead, hold freeze_mutex only during writeability checks, bump (proactively) write active count for the map, unlock the mutex and proceed with mmap logic.
    And only if something went wrong during mmap logic, then undo that write active counter increment. [0] https://lore.kernel.org/bpf/678dcbc9.050a0220.303755.0066.GAE@google.com/ (CVE-2025-21853)

Nessus は、ベンダーによって報告されたパッケージの存在に依存していることに注意してください。

検出

Linux Distros のパッチ未適用の脆弱性: CVE-2025-21853

medium Nessus プラグイン ID 249424

バージョン 1.5

バージョン 1.4

バージョン 1.3

バージョン 1.2

バージョン 1.1

バージョン 1.5 Sep 7, 2025, 7:21 AM CVSS metrics ("Cvssv4 score" set to 0.0) CVSSv2 severity (based on None, severity decreased from "High" to "Low") Detection (updated detection logic) Plugin metadata Plugin Feed: 202509070721
バージョン 1.4 Sep 6, 2025, 10:42 AM Plugin metadata Detection (updated detection logic) CVSSv2 severity (based on None, severity decreased from "High" to "Low") CVSS metrics ("Cvssv4 score" set to 0.0) Plugin Feed: 202509061042
バージョン 1.3 Sep 4, 2025, 5:30 PM Plugin metadata CVSS metrics ("Cvssv4 score" set to 0.0) CVSSv2 severity (based on None, severity decreased from "High" to "Low") Detection (updated detection logic) Plugin Feed: 202509041730
バージョン 1.2 Aug 31, 2025, 7:32 PM Plugin metadata Detection (updated detection logic) CVSSv2 severity (based on None, severity decreased from "High" to "Low") CVSS metrics ("Cvssv4 score" set to 0.0) Plugin Feed: 202508311932
バージョン 1.1 Aug 15, 2025, 7:38 PM New Plugin Feed: 202508151938