Description (CNA)
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/
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 68849411ce9eb55d00cef48504dcb35baca4b37e before e2f7c76758be16f1dc32c5a82270d4f6649eedab; affected b006847222623ac3cda8589d15379eac86a2bcb7 before 1d1ba14e00d290b1ed616ed78c8c49bf897ce390; affected b006847222623ac3cda8589d15379eac86a2bcb7 before 5a4d8944d6b1e1aaaa83ea42c116b520b4ed0394 |
| Linux / Linux | affected 6.8; unaffected 0 before 6.8; unaffected 6.9.10 through 6.9.*; unaffected 6.10 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/e2f7c76758be16f1dc32c5a82270d4f6649eedab
- https://git.kernel.org/stable/c/1d1ba14e00d290b1ed616ed78c8c49bf897ce390
- https://git.kernel.org/stable/c/5a4d8944d6b1e1aaaa83ea42c116b520b4ed0394
ADP enrichment
No English description supplied.
No English description supplied.
No references supplied.