CVE-2024-46801

libfs: fix get_stashed_dentry()

State: Published
Severity: 7.8 High
Published: Sep 18, 2024
Updated: Aug 5, 2026
Reserved: Sep 11, 2024

Description

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

libfs: fix get_stashed_dentry()

get_stashed_dentry() tries to optimistically retrieve a stashed dentry from a provided location. It needs to ensure to hold rcu lock before it dereference the stashed location to prevent UAF issues. Use rcu_dereference() instead of READ_ONCE() it's effectively equivalent with some lockdep bells and whistles and it communicates clearly that this expects rcu protection.

Scores

CVSS	Score	Vector	Source
3.1	7.8 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	Linux

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	07fd7c329839cf0b8c7766883d830a1a0d12d1dd to before 03e2a1209a83a380df34a72f7d6d1bc6c74132c7Affected 07fd7c329839cf0b8c7766883d830a1a0d12d1dd to before 4e32c25b58b945f976435bbe51f39b32d714052eAffected
LinuxLinux	6.9Affected before 6.9Not affected 6.10.10 through 6.10.*Not affected 6.11 and laterNot affected

References

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