7.1

CVE-2026-31674: linux Out-of-bounds Read

CVSS: 7.1v3.1HighModified
AliasesUBUNTU-CVE-2026-31674DEBIAN-CVE-2026-31674
Published 25-04-2026Last modified 19-10-2026
Open JSON

Vulnerability summary

CVE-2026-31674 is a high (CVSS 7.1) Out-of-bounds Read vulnerability in linux. EPSS estimates a 0.17% chance of exploitation in the next 30 days, higher than 6.5% of scored vulnerabilities.

Overall risk
28/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.1/10
010
High · v3.1 (CVE.org)
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-2026:21388-1SUSE-SU-2026:22433-1SUSE-SU-2026:22436-1SUSE-SU-2026:22458-1

Timeline

  1. 25-04-2026
    PublishedVulnerability first disclosed.
  2. 19-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: netfilter: ip6t_rt: reject oversized addrnr in rt_mt6_check() Reject rt match rules whose addrnr exceeds IP6T_RT_HOPS. rt_mt6() expects addrnr to stay within the bounds of rtinfo->addrs[]. Validate addrnr during rule installation so malformed rules are rejected before the match logic can use an out-of-range value.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.17%

Chance of exploitation in the next 30 days

Percentile

7%

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≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 13e3e30ed3b5b67cc1db2bd58a5d09b0f07debfa | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < af9b7e2b765966457f4ec23be5bd34a141f89574 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 29ea965a1353bc8303877422f79c8211e9ba9c55 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < c6a503a9f4debc654e3a6a7ca1f7fce6a9953c59 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < ded71f5684df16fa645cca5bf4fe6b0cd8a46119 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < d8795fde1f78669a87c87ac29fceab2f104daa8c | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < a28ebf6f99de270d6338ccdc3b49f3e818f99b7b | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 9d3f027327c2fa265f7f85ead41294792c3296ed | 2.6.12
  • linux_kernel≥ 2.6.12.1, < 5.10.253 | ≥ 5.11, < 5.15.203 | ≥ 5.16, < 6.1.168 | ≥ 6.2, < 6.6.131 | ≥ 6.7, < 6.12.80 | ≥ 6.13, < 6.18.21 | ≥ 6.19, < 6.19.11 | 2.6.12 | 2.6.12:rc2 | 2.6.12:rc3 | 2.6.12:rc4 | 2.6.12:rc5 | 7.0:rc1 | 7.0:rc2 | 7.0:rc3 | 7.0:rc4 | 7.0:rc5
Debian1 product
  • linux< 6.1.170-1 | < 6.12.85-1 | < 6.19.11-1

3 vendors · 160 products

References

43 links
Show all 43 references