Riskcovery

CVE-2026-80957

dm-pcache: detect a cycle in the last-kset chain during replay

State
Published
Severity
Not scored
Published
Sep 11, 2026
Updated
Oct 19, 2026
Reserved
Aug 26, 2026

Read the record on cve.org

Description

In the Linux kernel, the following vulnerability has been resolved:

dm-pcache: detect a cycle in the last-kset chain during replay

cache_replay() follows the on-media last-kset chain by next_cache_seg_id with no cond_resched(). A forged chain that points back into a segment it has already visited makes the replay loop follow it forever.

Cap the last-kset hops at cache->n_segs; a valid chain visits each segment at most once.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • 1d57628ff95b32d5cfa8d8f50e07690c161e9cf0 to before 663ee2f3824a505b983162de44134e789f8230daAffected
  • 1d57628ff95b32d5cfa8d8f50e07690c161e9cf0 to before 5311dfc5cd70edccd110257e3f30b2c1dcd3768dAffected
  • 1d57628ff95b32d5cfa8d8f50e07690c161e9cf0 to before 16c3b3a326e70f246a605b3dc27b7f83ba4743e3Affected
LinuxLinux
  • 6.18Affected
  • before 6.18Not affected
  • 6.18.50 through 6.18.*Not affected
  • 7.2.4 through 7.2.*Not affected
  • 7.3 and laterNot affected

References

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