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: apparmor: fix differential encoding verification Differential encoding allows loops to be created if it is abused. To prevent this the unpack should verify that a diff-encode chain terminates. Unfortunately the differential encode verification had two bugs. 1. it conflated states that had gone through check and already been marked, with states that were currently being checked and marked. This means that loops in the current chain being verified are treated as a chain that has already been verified. 2. the order bailout on already checked states compared current chain check iterators j,k instead of using the outer loop iterator i. Meaning a step backwards in states in the current chain verification was being mistaken for moving to an already verified state. Move to a double mark scheme where already verified states get a different mark, than the current chain being kept. This enables us to also drop the backwards verification check that was the cause of the second error as any already verified state is already marked. (CVE-2026-23409)

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-2026-23409

medium Nessus プラグイン ID 304779

バージョン 1.8

バージョン 1.7

バージョン 1.6

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 1.8 May 9, 2026, 2:20 AM Detection (updated detection logic) Plugin metadata Plugin Feed: 202605090220
バージョン 1.7 May 8, 2026, 1:55 AM Detection (updated detection logic) Plugin metadata Plugin Feed: 202605080155
バージョン 1.6 May 1, 2026, 7:22 AM Detection (updated detection logic) Plugin metadata Plugin Feed: 202605010722
バージョン 1.5 Apr 28, 2026, 8:33 AM CVSS metrics ("CVSSv3 score" set to 5.5) CVSS metrics ("CVSSv3 vector" set to "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H") CVSSv3 severity (based on None, severity decreased from "High" to "Medium") Detection (updated detection logic) Plugin metadata Plugin Feed: 202604280833
バージョン 1.4 Apr 14, 2026, 10:48 PM Detection (updated detection logic) Plugin Feed: 202604142248
バージョン 1.3 Apr 13, 2026, 9:27 PM Detection (updated detection logic) Plugin metadata Plugin Feed: 202604132127
バージョン 1.2 Apr 7, 2026, 7:26 PM Detection (updated detection logic) Plugin metadata Plugin Feed: 202604071926
バージョン 1.1 Apr 3, 2026, 3:52 PM New Plugin Feed: 202604031552