5.5

CVE-2026-31416: netfilter: nfnetlink_log: account for netlink header size

Modified
AliasesUBUNTU-CVE-2026-31416DEBIAN-CVE-2026-31416
Published 13-04-2026Last modified 15-10-2026

Vulnerability summary

CVE-2026-31416 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.

Priority
Routine

Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.12%
0%100%
Low · -0.05 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 31 · Related 29
MGASA-2026-0108MGASA-2026-0110SUSE-SU-2026:21834-1SUSE-SU-2026:2238-1USN-8567-1USN-8574-1

Timeline

  1. 13-04-2026
    PublishedVulnerability first disclosed.
  2. 15-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: netfilter: nfnetlink_log: account for netlink header size This is a followup to an old bug fix: NLMSG_DONE needs to account for the netlink header size, not just the attribute size. This can result in a WARN splat + drop of the netlink message, but other than this there are no ill effects.

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

Decrease -0.05 pp

From 0.17% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

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≥ 9dfa1dfe4d5e5e66a991321ab08afe69759d797a, < 4ec216410fac9de83c99177a160ebb8d42fad075 | ≥ 9dfa1dfe4d5e5e66a991321ab08afe69759d797a, < 09883bf257f4243ed5a1fd35078ec6f0d0f3696a | ≥ 9dfa1dfe4d5e5e66a991321ab08afe69759d797a, < 761b45c661af48da6a065868d59ab1e1f64fd9b6 | ≥ 9dfa1dfe4d5e5e66a991321ab08afe69759d797a, < 607245c4dbb86d9a10dd8388da0fb82170a99b61 | ≥ 9dfa1dfe4d5e5e66a991321ab08afe69759d797a, < 6b419700e459fbf707ca1543b7c1b57a60fedb73 | ≥ 9dfa1dfe4d5e5e66a991321ab08afe69759d797a, < 88a8f56e6276f616baad4274c6b8e4683e26e520 | ≥ 9dfa1dfe4d5e5e66a991321ab08afe69759d797a, < f08ffa3e1c8e36b6131f69c5eb23700c28cbd262 | ≥ 9dfa1dfe4d5e5e66a991321ab08afe69759d797a, < 6d52a4a0520a6696bdde51caa11f2d6821cd0c01 | 3a758a2b78da2f49f7165678faf999e946a0c4b5 | 131172845aa2c804ffa9423455aee585061ea35e | b1fef6b81871a396f3b8702077333e769673c87b | add9183d993c12fb61ce0a674a424341d5be5b36 | ≥ 3.10.61, < 3.11 | ≥ 3.12.34, < 3.13 | ≥ 3.14.25, < 3.15 | ≥ 3.17.4, < 3.18 | 3.18
  • linux_kernel≥ 3.10.61, < 3.11 | ≥ 3.12.34, < 3.13 | ≥ 3.14.25, < 3.15 | ≥ 3.18, < 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 | 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 | < 6.19.12-1

3 vendors · 160 products

References

43 links
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