Bug 2460678 (CVE-2026-31436) - CVE-2026-31436 kernel: dmaengine: idxd: fix possible wrong descriptor completion in llist_abort_desc()
Summary: CVE-2026-31436 kernel: dmaengine: idxd: fix possible wrong descriptor complet...
Keywords:
Status: NEW
Alias: CVE-2026-31436
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-04-22 15:04 UTC by OSIDB Bzimport
Modified: 2026-04-22 16:58 UTC (History)
0 users

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Description OSIDB Bzimport 2026-04-22 15:04:55 UTC
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.


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