CVE-2026-31436 CRITICAL

CVE-2026-31436: dmaengine: idxd: fix possible wrong descriptor completion in llist_abort_desc()

Vendor Linux
Product Linux
Published April 22, 2026
Last update May 11, 2026

CVSS base score

9.8/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

April 22, 2026 CVE published
May 11, 2026 Record updated