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CVE PROGRAM SOURCE RECORDUnscored

CVE-2026-80957

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

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Status
Published
Published
Updated
Assigning organization
Linux

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 1d57628ff95b32d5cfa8d8f50e07690c161e9cf0 to < 663ee2f3824a505b983162de44134e789f8230daaffected
  • 1d57628ff95b32d5cfa8d8f50e07690c161e9cf0 to < 5311dfc5cd70edccd110257e3f30b2c1dcd3768daffected
  • 1d57628ff95b32d5cfa8d8f50e07690c161e9cf0 to < 16c3b3a326e70f246a605b3dc27b7f83ba4743e3affected

Linux Linux

Default version status: affected

  • 6.18affected
  • 0 to < 6.18unaffected
  • 6.18.50 to ≤ 6.18.*unaffected
  • 7.2.4 to ≤ 7.2.*unaffected
  • 7.3 to ≤ *unaffected

References