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CVE PROGRAM SOURCE RECORDUnscored

CVE-2026-98868

dm-pcache: reject a kset that overruns its segment

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Status
Published
Published
Updated
Assigning organization
Linux

Description

In the Linux kernel, the following vulnerability has been resolved: dm-pcache: reject a kset that overruns its segment cache_replay(), the writeback worker and the GC worker read a kset of get_kset_onmedia_size() bytes and advance the position by it. A forged key_num makes that size exceed the segment's remaining space, so the advance walks past the segment and trips the cache_pos_advance() BUG_ON. Reject a kset whose on-media size exceeds cache_seg_remain() before use.

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 < 01a700e9278da5706c865b9ca3ae70fdb7b4531daffected
  • 1d57628ff95b32d5cfa8d8f50e07690c161e9cf0 to < 96e2863b1f81ea61b8d8d5d5a45d3b4c018f8e10affected
  • 1d57628ff95b32d5cfa8d8f50e07690c161e9cf0 to < 7ac1f10f987a2ffae4aecf0e2ceca8f552b665cbaffected

Linux Linux

Default version status: affected

  • 6.18affected
  • 0 to < 6.18unaffected
  • 6.18.52 to ≤ 6.18.*unaffected
  • 7.2.10 to ≤ 7.2.*unaffected
  • 7.3 to ≤ *unaffected

References