CVE-2021-47336: Linux Kernel

High severity, CVSS 7.8. EPSS: 0.2% chance of exploitation in the next 30 days.

In the Linux kernel, the following vulnerability has been resolved: smackfs: restrict bytes count in smk_set_cipso() Oops, I failed to update subject line. From 07571157c91b98ce1a4aa70967531e64b78e8346 Mon Sep 17 00:00:00 2001 Date: Mon, 12 Apr 2021 22:25:06 +0900 Subject: [PATCH] smackfs: restrict bytes count in smk_set_cipso() Commit 7ef4c19d245f3dc2 ("smackfs: restrict bytes count in smackfs write functions") missed that count > SMK_CIPSOMAX check applies to only format == SMK_FIXED24_FMT case.

Affected products

• Linux Linux Kernel: before 4.9.276 (fixed in 4.9.276); from 4.10, before 4.14.240 (fixed in 4.14.240); from 4.15, before 4.19.198 (fixed in 4.19.198); from 4.20, before 5.4.133 (fixed in 5.4.133); from 5.5, before 5.10.51 (fixed in 5.10.51); from 5.11, before 5.12.18 (fixed in 5.12.18); …

Published 2024-05-21. Last modified 2026-06-17.