CVE-2026-31440

MEDIUM

dmaengine: idxd: Fix leaking event log memory

Title source: cna
STIX 2.1

Description

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.

Scores

CVSS v3 5.5
EPSS 0.0001
EPSS Percentile 3.4%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Details

CWE
CWE-401
Status published
Products (14)
Linux/Linux < 6.4
Linux/Linux 244da66cda359227d80ccb41dbcb99da40eae186 - 695b491dc3f20365fd5821f22e25dbe3c1c20cbc
Linux/Linux 244da66cda359227d80ccb41dbcb99da40eae186 - 9dfa00967e6ef43a9dd0887fe5c3a721a39da92e
Linux/Linux 244da66cda359227d80ccb41dbcb99da40eae186 - d94f9b0ba28a205caf95902ee88b42bdb8af83d0
Linux/Linux 244da66cda359227d80ccb41dbcb99da40eae186 - ee66bc29578391c9b48523dc9119af67bd5c7c0f
Linux/Linux 244da66cda359227d80ccb41dbcb99da40eae186 - facd0012708e942fc12890708738aebde497564e
Linux/Linux 6.12.80 - 6.12.*
Linux/Linux 6.18.21 - 6.18.*
Linux/Linux 6.19.11 - 6.19.*
Linux/Linux 6.4
... and 4 more
Published Apr 22, 2026
Tracked Since Apr 22, 2026