5.5

CVE-2026-31781: linux

CVSS: 5.5v3.1MediumAnalyzed
AliasesUBUNTU-CVE-2026-31781DEBIAN-CVE-2026-31781
Published 01-05-2026Last modified 23-05-2026
Open JSON

Vulnerability summary

CVE-2026-31781 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.12% chance of exploitation in the next 30 days, higher than 1.8% 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
0.12%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 42 · Related 40
MGASA-2026-0108MGASA-2026-0110OPENSUSE-SU-2026:21555-1SUSE-SU-2026:23066-1SUSE-SU-2026:23068-1SUSE-SU-2026:23193-1

Timeline

  1. 01-05-2026
    PublishedVulnerability first disclosed.
  2. 23-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: drm/ioc32: stop speculation on the drm_compat_ioctl path The drm compat ioctl path takes a user controlled pointer, and then dereferences it into a table of function pointers, the signature method of spectre problems. Fix this up by calling array_index_nospec() on the index to the function pointer list.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.12%

Chance of exploitation in the next 30 days

Percentile

2%

Versus all other CVEs

30-day change

0.00 pp

From 0.12% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.12%

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

No weakness data has been published for this record.

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≥ 505b5240329b922f21f91d5b5d1e535c805eca6d, < 46a60ee8956ef1975f00455f614761c7ecedc09d | ≥ 505b5240329b922f21f91d5b5d1e535c805eca6d, < 5bb398991f378ef74d90b14a6ea8b61ff96cc03a | ≥ 505b5240329b922f21f91d5b5d1e535c805eca6d, < d59c5d8539662d95887b4564f3f72ad38076a2d5 | ≥ 505b5240329b922f21f91d5b5d1e535c805eca6d, < 489f2ef2b908898d01df697dc4fe1476674be640 | ≥ 505b5240329b922f21f91d5b5d1e535c805eca6d, < 4a41c2b18fc05d30b718d2602cac339eae710b34 | ≥ 505b5240329b922f21f91d5b5d1e535c805eca6d, < f0e441be08a2eab10b2d06fccfa267ee599dd6b3 | ≥ 505b5240329b922f21f91d5b5d1e535c805eca6d, < 27ef84bba9b9d7b03418c60fbc6069ea0e87b13c | ≥ 505b5240329b922f21f91d5b5d1e535c805eca6d, < f8995c2df519f382525ca4bc90553ad2ec611067 | abc60edcfc87771ff244763d4d19c67766f5dd0f | a2a840d6dcae960c2dfdf3fcb1b759e1b7d90663 | 00279b505289f7529d9be2e78915d0483ffbd314 | d04e6ea0cec9e7d6cba806508f657d2d0dc6cacf | 7f3ebea19795eb38438cd3709fabf2afd53cf447 | ≥ 3.16.63, < 3.17 | ≥ 4.4.170, < 4.5 | ≥ 4.9.148, < 4.10 | ≥ 4.14.91, < 4.15 | ≥ 4.19.13, < 4.20 | 4.20
  • linux_kernel≥ 3.16.63, < 3.17 | ≥ 4.4.170, < 4.5 | ≥ 4.9.148, < 4.10 | ≥ 4.14.91, < 4.15 | ≥ 4.19.13, < 4.20 | ≥ 4.20.1, < 5.10.253 | ≥ 5.11, < 5.15.203 | ≥ 5.16, < 6.1.168 | ≥ 6.2, < 6.6.134 | ≥ 6.7, < 6.12.81 | ≥ 6.13, < 6.18.22 | ≥ 6.19, < 6.19.12 | 4.20 | 7.0:rc1 | 7.0:rc2 | 7.0:rc3 | 7.0:rc4 | 7.0:rc5 | 7.0:rc6
Debian1 product
  • linux< 6.1.170-1 | < 6.12.85-1 | < 6.19.12-1

3 vendors · 160 products

References

39 links
Show all 39 references