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

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Summary

CVECVE-2026-31436
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-04-22 14:16:36 UTC
Updated2026-05-19 22:10:37 UTC
DescriptionIn 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.

Risk And Classification

Primary CVSS: v3.1 9.8 CRITICAL from 416baaa9-dc9f-4396-8d5f-8c081fb06d67

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.000180000 probability, percentile 0.046080000 (date 2026-04-27)

Problem Types: CWE-476

VersionSourceTypeScoreSeverityVector
3.1416baaa9-dc9f-4396-8d5f-8c081fb06d67Secondary9.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
3.1CNADECLARED9.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected aa8d18becc0c14aa3eb46d6d1b81450446e11b87 e21da2ad8844585040fe4b82be1ad2fe99d40074 git Not specified
CNA Linux Linux affected aa8d18becc0c14aa3eb46d6d1b81450446e11b87 82656e8daf8de00935ae91b91bed43f4d6e0d644 git Not specified
CNA Linux Linux affected aa8d18becc0c14aa3eb46d6d1b81450446e11b87 0e4f43779d550e559be13a5cdb763bad92c4cc99 git Not specified
CNA Linux Linux affected aa8d18becc0c14aa3eb46d6d1b81450446e11b87 e1c9866173c5f8521f2d0768547a01508cb9ff27 git Not specified
CNA Linux Linux affected 6.8 Not specified
CNA Linux Linux unaffected 6.8 semver Not specified
CNA Linux Linux unaffected 6.12.80 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.21 6.18.* semver Not specified
CNA Linux Linux unaffected 6.19.11 6.19.* semver Not specified
CNA Linux Linux unaffected 7.0 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/e21da2ad8844585040fe4b82be1ad2fe99d40074 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/0e4f43779d550e559be13a5cdb763bad92c4cc99 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/82656e8daf8de00935ae91b91bed43f4d6e0d644 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/e1c9866173c5f8521f2d0768547a01508cb9ff27 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
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