CVE-2024-41033
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]).
Does this matter?
Lower severity and a low EPSS score (0.29%). Track it; it rarely justifies an emergency change on its own.
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/
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.29% probability · 21th percentile
- CISA KEV
- Not listed
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/1d1ba14e00d290b1ed616ed78c8c49bf897ce390Patch
- https://git.kernel.org/stable/c/5a4d8944d6b1e1aaaa83ea42c116b520b4ed0394Patch
- https://git.kernel.org/stable/c/e2f7c76758be16f1dc32c5a82270d4f6649eedab
- https://git.kernel.org/stable/c/1d1ba14e00d290b1ed616ed78c8c49bf897ce390Patch
- https://git.kernel.org/stable/c/5a4d8944d6b1e1aaaa83ea42c116b520b4ed0394Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.