CVE-2026-31443 PUBLISHED

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

Assigner: Linux
Reserved: 09.03.2026 Published: 22.04.2026 Updated: 22.04.2026

In 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.

Product Status

Vendor Linux
Product Linux
Versions Default: unaffected
  • affected from 6078a315aec15e0776fa90347cf4eba7478cdbd7 to aa0ffc6d3990ec35976308a068dc23178037e564 (excl.)
  • affected from 6078a315aec15e0776fa90347cf4eba7478cdbd7 to 0e761079d653c25f838380cf7cef2730832110cc (excl.)
  • affected from 6078a315aec15e0776fa90347cf4eba7478cdbd7 to 52d2edea0d63c935e82631e4b9e4a94eccf97b5b (excl.)
Vendor Linux
Product Linux
Versions Default: affected
  • Version 6.14 is affected
  • unaffected from 0 to 6.14 (excl.)
  • unaffected from 6.18.21 to 6.18.* (incl.)
  • unaffected from 6.19.11 to 6.19.* (incl.)
  • unaffected from 7.0 to * (incl.)

References