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: ext4: fix rbtree traversal bug in ext4_mb_use_preallocated During allocations, while looking for preallocations(PA) in the per inode rbtree, we can't do a direct traversal of the tree because ext4_mb_discard_group_preallocation() can paralelly mark the pa deleted and that can cause direct traversal to skip some entries. This was leading to a BUG_ON() being hit [1] when we missed a PA that could satisfy our request and ultimately tried to create a new PA that would overlap with the missed one. To makes sure we handle that case while still keeping the performance of the rbtree, we make use of the fact that the only pa that could possibly overlap the original goal start is the one that satisfies the below conditions: 1. It must have it's logical start immediately to the left of (ie less than) original logical start. 2. It must not be deleted To find this pa we use the following traversal method: 1. Descend into the rbtree normally to find the immediate neighboring PA. Here we keep descending irrespective of if the PA is deleted or if it overlaps with our request etc. The goal is to find an immediately adjacent PA. 2. If the found PA is on right of original goal, use rb_prev() to find the left adjacent PA. 3. Check if this PA is deleted and keep moving left with rb_prev() until a non deleted PA is found. 4. This is the PA we are looking for. Now we can check if it can satisfy the original request and proceed accordingly. This approach also takes care of having deleted PAs in the tree. (While we are at it, also fix a possible overflow bug in calculating the end of a PA) [1] https://lore.kernel.org/linux-ext4/CA+G9fYv2FRpLqBZf34ZinR8bU2_ZRAUOjKAD3+tKRFaEQHtt8Q@mail.gmail.com/(CVE-2023-53813)

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-2023-53813

high Nessus プラグイン ID 278070

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 1.6 Jan 21, 2026, 5:00 PM Detection (updated detection logic) Plugin metadata Plugin Feed: 202601211700
バージョン 1.5 Jan 15, 2026, 2:04 PM Detection (updated detection logic) Plugin metadata Plugin Feed: 202601151404
バージョン 1.4 Jan 10, 2026, 7:58 PM Detection (updated detection logic) Plugin metadata Plugin Feed: 202601101958
バージョン 1.3 Dec 22, 2025, 9:15 PM Detection (updated detection logic) Plugin metadata Plugin Feed: 202512222115
バージョン 1.2 Dec 12, 2025, 12:11 AM CVSS metrics ("CVSSv2 score" set to 7.8) CVSS metrics ("CVSSv2 vector" set to "CVSS2#AV:A/AC:L/Au:N/C:C/I:N/A:C") CVSS metrics ("CVSSv3 score" set to 8.0) CVSS metrics ("CVSSv3 vector" set to "CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H") CVSS temporal metrics ("CVSSv2 temporal vector" set to "CVSS2#E:U/RL:U/RC:C") CVSS temporal metrics ("CVSSv3 temporal vector" set to "CVSS:3.0/E:U/RL:U/RC:C") CVSSv2 score source (set to "CVE-2023-53813") Detection (updated detection logic) Plugin metadata Plugin Feed: 202512120011
バージョン 1.1 Dec 11, 2025, 12:59 PM New Plugin Feed: 202512111259