CVE-2024-41033

cachestat: do not flush stats in recency check

Description

In the Linux kernel, the following vulnerability has been resolved: cachestat: do not flush stats in recency check syzbot detects that cachestat() is flushing stats, which can sleep, in its RCU read section (see [1]). This is done in the workingset_test_recent() step (which checks if the folio's eviction is recent). Move the stat flushing step to before the RCU read section of cachestat, and skip stat flushing during the recency check. [1]: https://lore.kernel.org/cgroups/000000000000f71227061bdf97e0@google.com/

N/A

CVSS

Severity:

EPSS 0.10%

Affected: Linux Linux

References

Link	Tags
https://git.kernel.org/stable/c/1d1ba14e00d290b1ed616ed78c8c49bf897ce390
https://git.kernel.org/stable/c/5a4d8944d6b1e1aaaa83ea42c116b520b4ed0394

Frequently Asked Questions

What is the severity of CVE-2024-41033?: CVE-2024-41033 has not yet been assigned a CVSS score.
How to fix CVE-2024-41033?: To fix CVE-2024-41033, 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-2024-41033 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2024-41033 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-2024-41033?: CVE-2024-41033 affects Linux Linux, Linux Linux.

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