CVE-2026-46150

fanotify: fix false positive on permission events

State: Published
Severity: 7.1 High
Published: May 28, 2026
Updated: Oct 19, 2026
Reserved: May 13, 2026

Description

In the Linux kernel, the following vulnerability has been resolved:

fanotify: fix false positive on permission events

fsnotify_get_mark_safe() may return false for a mark on an unrelated group, which results in bypassing the permission check.

Fix by skipping over detached marks that are not in the current group.

Scores

CVSS	Score	Vector	Source
3.1	7.1 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N	Linux

Weaknesses

CWE-863 Incorrect Authorization

Affected Products

Product	Versions
LinuxLinux	abc77577a669f424c5d0c185b9994f2621c52aa4 to before a24765332e129c1916d5a6615418b75599b8fcdcAffected abc77577a669f424c5d0c185b9994f2621c52aa4 to before 4a7611ad653785fcdea5ff5f4441e2b7d05b7f11Affected abc77577a669f424c5d0c185b9994f2621c52aa4 to before 04bb66be92f48ed13c3faf1139d892df228789bcAffected abc77577a669f424c5d0c185b9994f2621c52aa4 to before 895ebbedf88318607c24acc0f591c74b165e1d0aAffected abc77577a669f424c5d0c185b9994f2621c52aa4 to before f130790f1acc8399f32652846c875a251efd040fAffected abc77577a669f424c5d0c185b9994f2621c52aa4 to before 7baa02b0ae9d17ec5f08836d8ea88ce1927d0678Affected abc77577a669f424c5d0c185b9994f2621c52aa4 to before b7b24b28c8cd55844cab908f4f39dded638d5538Affected abc77577a669f424c5d0c185b9994f2621c52aa4 to before 7746e3bd4cc19b5092e00d32d676e329bfcb6900Affected
LinuxLinux	4.12Affected before 4.12Not affected 5.10.258 through 5.10.Not affected 5.15.209 through 5.15.Not affected 6.1.175 through 6.1.Not affected 6.6.140 through 6.6.Not affected 6.12.88 through 6.12.Not affected 6.18.30 through 6.18.Not affected 7.0.7 through 7.0.*Not affected 7.1 and laterNot affected

Product

Versions

LinuxLinux

abc77577a669f424c5d0c185b9994f2621c52aa4 to before a24765332e129c1916d5a6615418b75599b8fcdcAffected
abc77577a669f424c5d0c185b9994f2621c52aa4 to before 4a7611ad653785fcdea5ff5f4441e2b7d05b7f11Affected
abc77577a669f424c5d0c185b9994f2621c52aa4 to before 04bb66be92f48ed13c3faf1139d892df228789bcAffected
abc77577a669f424c5d0c185b9994f2621c52aa4 to before 895ebbedf88318607c24acc0f591c74b165e1d0aAffected
abc77577a669f424c5d0c185b9994f2621c52aa4 to before f130790f1acc8399f32652846c875a251efd040fAffected
abc77577a669f424c5d0c185b9994f2621c52aa4 to before 7baa02b0ae9d17ec5f08836d8ea88ce1927d0678Affected
abc77577a669f424c5d0c185b9994f2621c52aa4 to before b7b24b28c8cd55844cab908f4f39dded638d5538Affected
abc77577a669f424c5d0c185b9994f2621c52aa4 to before 7746e3bd4cc19b5092e00d32d676e329bfcb6900Affected

LinuxLinux

4.12Affected
before 4.12Not affected
5.10.258 through 5.10.*Not affected
5.15.209 through 5.15.*Not affected
6.1.175 through 6.1.*Not affected
6.6.140 through 6.6.*Not affected
6.12.88 through 6.12.*Not affected
6.18.30 through 6.18.*Not affected
7.0.7 through 7.0.*Not affected
7.1 and laterNot affected

References

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