8.1

CVE-2026-31779: linux Out-of-bounds Read

CVSS: 8.1v3.1HighModified
AliasesUBUNTU-CVE-2026-31779DEBIAN-CVE-2026-31779
Published 01-05-2026Last modified 19-10-2026
Open JSON

Vulnerability summary

CVE-2026-31779 is a high (CVSS 8.1) Out-of-bounds Read vulnerability in linux. EPSS estimates a 0.41% chance of exploitation in the next 30 days, higher than 34% of scored vulnerabilities.

Overall risk
32/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.1/10
010
High · v3.1 (CVE.org)
EPSS score
0.41%
0%100%
Low · +0.14 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 28 · Related 26
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. 19-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: iwlwifi: mvm: fix potential out-of-bounds read in iwl_mvm_nd_match_info_handler() The memcpy function assumes the dynamic array notif->matches is at least as large as the number of bytes to copy. Otherwise, results->matches may contain unwanted data. To guarantee safety, extend the validation in one of the checks to ensure sufficient packet length. Found by Linux Verification Center (linuxtesting.org) with SVACE.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.41%

Chance of exploitation in the next 30 days

Percentile

34%

Versus all other CVEs

30-day change

+0.14 pp

From 0.27% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.41%

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≥ 5ac54afd4d97ad8d94fe250c83b1924eb6d2268c, < f6abac936a0dfd31d6c3e49205ec0ee75a8f887f | ≥ 5ac54afd4d97ad8d94fe250c83b1924eb6d2268c, < ffbed27ba15ef80d1c622eeedbfef03e501ae134 | ≥ 5ac54afd4d97ad8d94fe250c83b1924eb6d2268c, < e67d8c626ace80b0fa2b48c8ec0a46b508c93442 | ≥ 5ac54afd4d97ad8d94fe250c83b1924eb6d2268c, < dd90880eb5ec5442b37eb2b95688f4a63f4883e3 | ≥ 5ac54afd4d97ad8d94fe250c83b1924eb6d2268c, < ca0e9491b98ca4c5b44204b0b3dd8062a3b5fba2 | ≥ 5ac54afd4d97ad8d94fe250c83b1924eb6d2268c, < 744fabc338e87b95c4d1ff7c95bc8c0f834c6d99 | 6.1
  • linux_kernel≥ 6.1, < 6.1.168 | ≥ 6.2, < 6.6.134 | ≥ 6.7, < 6.12.81 | ≥ 6.13, < 6.18.22 | ≥ 6.19, < 6.19.12 | 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 · 133 products

References

24 links
Show all 24 references