CVE-2026-31436 PUBLISHED

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

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 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.

Product Status

Vendor Linux
Product Linux
Versions Default: unaffected
  • affected from aa8d18becc0c14aa3eb46d6d1b81450446e11b87 to e21da2ad8844585040fe4b82be1ad2fe99d40074 (excl.)
  • affected from aa8d18becc0c14aa3eb46d6d1b81450446e11b87 to 82656e8daf8de00935ae91b91bed43f4d6e0d644 (excl.)
  • affected from aa8d18becc0c14aa3eb46d6d1b81450446e11b87 to 0e4f43779d550e559be13a5cdb763bad92c4cc99 (excl.)
  • affected from aa8d18becc0c14aa3eb46d6d1b81450446e11b87 to e1c9866173c5f8521f2d0768547a01508cb9ff27 (excl.)
Vendor Linux
Product Linux
Versions Default: affected
  • Version 6.8 is affected
  • unaffected from 0 to 6.8 (excl.)
  • unaffected from 6.12.80 to 6.12.* (incl.)
  • 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