5.5

CVE-2026-31440: linux

CVSS: 5.5v3.1MediumModified
AliasesUBUNTU-CVE-2026-31440DEBIAN-CVE-2026-31440
Published 22-04-2026Last modified 17-05-2026
Open JSON

Vulnerability summary

CVE-2026-31440 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.16% chance of exploitation in the next 30 days, higher than 5% of scored vulnerabilities.

Overall risk
22/100
0100
Low · default modelHow is this calculated?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.16%
0%100%
Low · +0.04 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 26 · Related 26
OPENSUSE-SU-2026:21555-1SUSE-SU-2026:23066-1SUSE-SU-2026:23068-1SUSE-SU-2026:23193-1SUSE-SU-2026:23194-1SUSE-SU-2026:23221-1

Timeline

  1. 22-04-2026
    PublishedVulnerability first disclosed.
  2. 17-05-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.16%

Chance of exploitation in the next 30 days

Percentile

5%

Versus all other CVEs

30-day change

+0.04 pp

From 0.12% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.16%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Ubuntu130 products
  • linux< 6.8.0-136.136 | All versions (No fix recorded)
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 6.8.0-1061.64 | All versions (No fix recorded)
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 244da66cda359227d80ccb41dbcb99da40eae186, < 695b491dc3f20365fd5821f22e25dbe3c1c20cbc | ≥ 244da66cda359227d80ccb41dbcb99da40eae186, < d94f9b0ba28a205caf95902ee88b42bdb8af83d0 | ≥ 244da66cda359227d80ccb41dbcb99da40eae186, < facd0012708e942fc12890708738aebde497564e | ≥ 244da66cda359227d80ccb41dbcb99da40eae186, < 9dfa00967e6ef43a9dd0887fe5c3a721a39da92e | ≥ 244da66cda359227d80ccb41dbcb99da40eae186, < ee66bc29578391c9b48523dc9119af67bd5c7c0f | 6.4
  • linux_kernel≥ 6.4, < 6.12.80 | ≥ 6.13, < 6.18.21 | ≥ 6.19, < 6.19.11 | 7.0:rc1 | 7.0:rc2 | 7.0:rc3 | 7.0:rc4 | 7.0:rc5
Debian1 product
  • linux< 6.12.85-1 | < 6.19.11-1

3 vendors · 133 products

References

23 links
Show all 23 references