dmaengine: idxd: Fix crash when the event log is disabled

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-31443
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-04-22 14:16:37 UTC
Updated2026-05-07 19:27:16 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: dmaengine: idxd: Fix crash when the event log is disabled If reporting errors to the event log is not supported by the hardware, and an error that causes Function Level Reset (FLR) is received, the driver will try to restore the event log even if it was not allocated. Also, only try to free the event log if it was properly allocated.

Risk And Classification

Primary CVSS: v3.1 5.5 MEDIUM from [email protected]

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

EPSS: 0.000170000 probability, percentile 0.040700000 (date 2026-04-26)

Problem Types: NVD-CWE-noinfo

CVSS v3.1 Breakdown

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

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/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 6078a315aec15e0776fa90347cf4eba7478cdbd7 aa0ffc6d3990ec35976308a068dc23178037e564 git Not specified
CNA Linux Linux affected 6078a315aec15e0776fa90347cf4eba7478cdbd7 0e761079d653c25f838380cf7cef2730832110cc git Not specified
CNA Linux Linux affected 6078a315aec15e0776fa90347cf4eba7478cdbd7 52d2edea0d63c935e82631e4b9e4a94eccf97b5b git Not specified
CNA Linux Linux affected 6.14 Not specified
CNA Linux Linux unaffected 6.14 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/aa0ffc6d3990ec35976308a068dc23178037e564 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/52d2edea0d63c935e82631e4b9e4a94eccf97b5b 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/0e761079d653c25f838380cf7cef2730832110cc 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
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