5.5

CVE-2026-31651: linux NULL Pointer Dereference

CVSS: 5.5v3.1MediumModified
AliasesUBUNTU-CVE-2026-31651DEBIAN-CVE-2026-31651
Published 24-04-2026Last modified 15-10-2026
Open JSON

Vulnerability summary

CVE-2026-31651 is a medium (CVSS 5.5) NULL Pointer Dereference vulnerability in linux. EPSS estimates a 0.17% chance of exploitation in the next 30 days, higher than 5.5% 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
0.17%
0%100%
Low · +0.05 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 41 · Related 39
MGASA-2026-0108MGASA-2026-0110OPENSUSE-SU-2026:21555-1SUSE-SU-2026:23066-1SUSE-SU-2026:23068-1SUSE-SU-2026:23193-1

Timeline

  1. 24-04-2026
    PublishedVulnerability first disclosed.
  2. 15-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: mmc: vub300: fix NULL-deref on disconnect Make sure to deregister the controller before dropping the reference to the driver data on disconnect to avoid NULL-pointer dereferences or use-after-free.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.17%

Chance of exploitation in the next 30 days

Percentile

6%

Versus all other CVEs

30-day change

+0.05 pp

From 0.12% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.17%

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

Ubuntu157 products
  • linuxAll versions (No fix recorded) | < 5.15.0-186.196 | < 6.8.0-136.136
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1112.119 | < 6.8.0-1061.64
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 88095e7b473a3d9ec3b9c60429576e9cbd327c89, < 6446516e626ce7c44bdadbcbb3d7677a2c52ce93 | ≥ 88095e7b473a3d9ec3b9c60429576e9cbd327c89, < ba3b9429de94958dc0060d9816a915dd75c34919 | ≥ 88095e7b473a3d9ec3b9c60429576e9cbd327c89, < 517b58e1d067115f80d198feee10192da4c424d0 | ≥ 88095e7b473a3d9ec3b9c60429576e9cbd327c89, < 6468cab1173f44f7a4b7a05ce8abfdfd1ce1557a | ≥ 88095e7b473a3d9ec3b9c60429576e9cbd327c89, < 53f2642d77ab5f1f303388bff5500363c6cf962c | ≥ 88095e7b473a3d9ec3b9c60429576e9cbd327c89, < c83a282615d8f7ba28cebddd54600b419d562d82 | ≥ 88095e7b473a3d9ec3b9c60429576e9cbd327c89, < 8d09e75759cb2afc0732acfb5a14a93c03805a61 | ≥ 88095e7b473a3d9ec3b9c60429576e9cbd327c89, < dff34ef879c5e73298443956a8b391311ba78d57 | 3.0
  • linux_kernel≥ 3.0.1, < 5.10.253 | ≥ 5.11, < 5.15.203 | ≥ 5.16, < 6.1.169 | ≥ 6.2, < 6.6.135 | ≥ 6.7, < 6.12.82 | ≥ 6.13, < 6.18.23 | ≥ 6.19, < 6.19.13 | 3.0 | 7.0:rc1 | 7.0:rc2 | 7.0:rc3 | 7.0:rc4 | 7.0:rc5 | 7.0:rc6 | 7.0:rc7
Debian1 product
  • linux< 6.1.170-1 | < 6.12.85-1 | < 6.19.13-1

3 vendors · 160 products

References

43 links
Show all 43 references