CVE-2024-46801

libfs: fix get_stashed_dentry()

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.

5.5

CVSS

Severity: Medium

CVSS 3.1 •

EPSS 0.04%

Affected: Linux Linux

References

Link	Tags
https://git.kernel.org/stable/c/03e2a1209a83a380df34a72f7d6d1bc6c74132c7	patch
https://git.kernel.org/stable/c/4e32c25b58b945f976435bbe51f39b32d714052e	patch

Frequently Asked Questions

What is the severity of CVE-2024-46801?: CVE-2024-46801 has been scored as a medium severity vulnerability.
How to fix CVE-2024-46801?: To fix CVE-2024-46801, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2024-46801 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2024-46801 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2024-46801?: CVE-2024-46801 affects Linux Linux, Linux Linux.

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