Riskcovery

CVE-2026-98867

dm-pcache: bound the logical key offset from persistent memory

State
Published
Severity
Not scored
Published
Oct 18, 2026
Updated
Oct 19, 2026
Reserved
Sep 25, 2026

Read the record on cve.org

Description

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

dm-pcache: bound the logical key offset from persistent memory

cache_key_decode() takes a key's logical off from the cache device and later indexes req_key_tree->subtrees[] by it in get_subtree(). An off past the device forms a subtree pointer outside the array, which rb_insert() writes through during replay.

Reject a key of zero length, or whose off+len (computed in 64 bits) exceeds the device size, before it is used.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • 1d57628ff95b32d5cfa8d8f50e07690c161e9cf0 to before 3d5a87cb909c1f375f08065b20123fa5db5958d8Affected
  • 1d57628ff95b32d5cfa8d8f50e07690c161e9cf0 to before 10449703200076980704894c3d68d6796182371bAffected
  • 1d57628ff95b32d5cfa8d8f50e07690c161e9cf0 to before 97fc4b53dbe4a983fdf093243067fa6a64562307Affected
LinuxLinux
  • 6.18Affected
  • before 6.18Not affected
  • 6.18.52 through 6.18.*Not affected
  • 7.2.10 through 7.2.*Not affected
  • 7.3 and laterNot affected

References

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