Riskcovery

CVE-2026-31436

dmaengine: idxd: fix possible wrong descriptor completion in llist_abort_desc()

State
Published
Severity
9.8 Critical
Published
Apr 22, 2026
Updated
Oct 19, 2026
Reserved
Mar 9, 2026

Read the record on cve.org

Description

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

dmaengine: idxd: fix possible wrong descriptor completion in llist_abort_desc()

At the end of this function, d is the traversal cursor of flist, but the code completes found instead. This can lead to issues such as NULL pointer dereferences, double completion, or descriptor leaks.

Fix this by completing d instead of found in the final list_for_each_entry_safe() loop.

Scores

CVSSScoreVectorSource
3.19.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HLinux

Weaknesses

  • CWE-758 Reliance on Undefined, Unspecified, or Implementation-Defined Behavior

Affected Products

ProductVersions
LinuxLinux
  • aa8d18becc0c14aa3eb46d6d1b81450446e11b87 to before e21da2ad8844585040fe4b82be1ad2fe99d40074Affected
  • aa8d18becc0c14aa3eb46d6d1b81450446e11b87 to before 82656e8daf8de00935ae91b91bed43f4d6e0d644Affected
  • aa8d18becc0c14aa3eb46d6d1b81450446e11b87 to before 0e4f43779d550e559be13a5cdb763bad92c4cc99Affected
  • aa8d18becc0c14aa3eb46d6d1b81450446e11b87 to before e1c9866173c5f8521f2d0768547a01508cb9ff27Affected
LinuxLinux
  • 6.8Affected
  • before 6.8Not affected
  • 6.12.80 through 6.12.*Not affected
  • 6.18.21 through 6.18.*Not affected
  • 6.19.11 through 6.19.*Not affected
  • 7.0 and laterNot affected

References

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