CVE-2024-41033

Summary

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux68849411ce9eb55d00cef48504dcb35baca4b37e < e2f7c76758be16f1dc32c5a82270d4f6649eedabaffected
LinuxLinuxb006847222623ac3cda8589d15379eac86a2bcb7 < 1d1ba14e00d290b1ed616ed78c8c49bf897ce390affected
LinuxLinuxb006847222623ac3cda8589d15379eac86a2bcb7 < 5a4d8944d6b1e1aaaa83ea42c116b520b4ed0394affected
LinuxLinux6.8affected
LinuxLinux0 < 6.8unaffected
LinuxLinux6.9.10 <= 6.9.*unaffected
LinuxLinux6.10 <= *unaffected

Weaknesses

ADP Enrichment

CVE Program Container

Additional References

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References