CVE-2026-31416

MediumCVSS 5.5/10Last modified Nov 10, 2026

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.

Metrics

CVSS 3.1 5.5/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected software

VendorProductVersions
LinuxLinux>= 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
LinuxLinux3.18
SiemensSIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0)>= V3.1.6, < *
SiemensSIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0)>= V3.1.5, < *
SiemensSIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0)>= V3.1.7, < *
SiemensSIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0)>= V3.1.6, < *
SiemensSIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0)>= V3.1.5, < *
SiemensSIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0)>= V3.1.7, < *
SiemensSIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0)>= V3.1.6, < *
SiemensSIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0)>= V3.1.5, < *
SiemensSIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0)>= V3.1.7, < *
SiemensSIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0)>= V3.1.6, < *
SiemensSIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0)>= V3.1.5, < *
SiemensSIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0)>= V3.1.7, < *
SiemensSIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0)>= V3.1.6, < *
SiemensSIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0)>= V3.1.5, < *
SiemensSIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0)>= V3.1.7, < *

References

Timeline

Published
Apr 13, 2026
Last modified
Nov 10, 2026
NVD status
Modified

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CVE-2026-31416: Medium severity, CVSS 5.5 | Vulnix