CVE-2026-31440

Summary

In the Linux kernel, the following vulnerability has been resolved: dmaengine: idxd: Fix leaking event log memory During the device remove process, the device is reset, causing the configuration registers to go back to their default state, which is zero. As the driver is checking if the event log support was enabled before deallocating, it will fail if a reset happened before. Do not check if the support was enabled, the check for 'idxd->evl' being valid (only allocated if the HW capability is available) is enough.

Impact & exploitability

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

Affected products we track (1)

Recommendation

Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.

Official patch: https://git.kernel.org/stable/c/9dfa00967e6ef43a9dd0887fe5c3a721a39da92e ↗

Additional information

• NVD record
• https://git.kernel.org/stable/c/9dfa00967e6ef43a9dd0887fe5c3a721a39da92ePatch
• https://git.kernel.org/stable/c/d94f9b0ba28a205caf95902ee88b42bdb8af83d0Patch
• https://git.kernel.org/stable/c/ee66bc29578391c9b48523dc9119af67bd5c7c0fPatch
• https://git.kernel.org/stable/c/facd0012708e942fc12890708738aebde497564ePatch
• https://git.kernel.org/stable/c/695b491dc3f20365fd5821f22e25dbe3c1c20cbc