by Kastro
Paper/Archive/CVE-2026-31436

CVE-2026-31436

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

EPSS 0.5%CVSS 9.8
critical.is priorityof 100
37
CVSS 9.8 (CNA)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 39.6.396 × 207.9No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
Linuxaa8d18becc0c14aa3eb46d6d1b81450446e11b87 – < e21da2ad8844585040fe4b82be1ad2fe99d40074e21da2ad8844585040fe4b82be1ad2fe99d40074CNA
Linuxaa8d18becc0c14aa3eb46d6d1b81450446e11b87 – < 82656e8daf8de00935ae91b91bed43f4d6e0d64482656e8daf8de00935ae91b91bed43f4d6e0d644CNA
Linuxaa8d18becc0c14aa3eb46d6d1b81450446e11b87 – < 0e4f43779d550e559be13a5cdb763bad92c4cc990e4f43779d550e559be13a5cdb763bad92c4cc99CNA
Linuxaa8d18becc0c14aa3eb46d6d1b81450446e11b87 – < e1c9866173c5f8521f2d0768547a01508cb9ff27e1c9866173c5f8521f2d0768547a01508cb9ff27CNA
Linux6.86.12.80CNA

Scores by source

Linux (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

refgit.kernel.org/stable/c/e21da2ad8844585040fe4b82be1ad2fe99d40074refgit.kernel.org/stable/c/82656e8daf8de00935ae91b91bed43f4d6e0d644refgit.kernel.org/stable/c/0e4f43779d550e559be13a5cdb763bad92c4cc99refgit.kernel.org/stable/c/e1c9866173c5f8521f2d0768547a01508cb9ff27