Medium 5.5Published Apr 13, 2026

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

Updated under an hour ago (Oct 27, 2026, 5:50 AM ET)

Does this affect you?

It affects Linux and 4 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

Do this next

Start free and add your stack

Free account, 1 product

Every CVE for Linux

Exploited in the last 30 days

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: 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Modified
Record last updated: Oct 14, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	9dfa1dfe4d5e5e66a991321ab08afe69759d797a builds before 4ec216410fac9de83c99177a160ebb8d42fad075; from 9dfa1dfe4d5e5e66a991321ab08afe69759d797a before 09883bf257f4243ed5a1fd35078ec6f0d0f3696a; from 9dfa1dfe4d5e5e66a991321ab08afe69759d797a before 761b45c661af48da6a065868d59ab1e1f64fd9b6; from 9dfa1dfe4d5e5e66a991321ab08afe69759d797a before 607245c4dbb86d9a10dd8388da0fb82170a99b61; 9dfa1dfe4d5e5e66a991321ab08afe69759d797a builds before 6b419700e459fbf707ca1543b7c1b57a60fedb73; from 9dfa1dfe4d5e5e66a991321ab08afe69759d797a before 88a8f56e6276f616baad4274c6b8e4683e26e520; from 9dfa1dfe4d5e5e66a991321ab08afe69759d797a before f08ffa3e1c8e36b6131f69c5eb23700c28cbd262; 9dfa1dfe4d5e5e66a991321ab08afe69759d797a builds before 6d52a4a0520a6696bdde51caa11f2d6821cd0c01; and 8 more ranges	CNA record
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518_4_pn_dp_mfp (from the name)	from V3.1.6	CISA ADP
Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518f_4_pn_dp_mfp (from the name)	from V3.1.6	CISA ADP
Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP siemens:siplus_s7_1500_cpu_1518_4_pn_dp_mfp (from the name)	from V3.1.6	CISA ADP
linux linux_kernel linux:linux_kernel	from 3.10.61 before 3.11; from 3.12.34 before 3.13; from 3.14.25 before 3.15; from 3.18 before 5.10.253; from 5.11 before 5.15.203; from 5.16 before 6.1.168; from 6.2 before 6.6.134; from 6.7 before 6.12.81; and 9 more ranges	NVD

References

References

https://git.kernel.org/stable/c/4ec216410fac9de83c99177a160ebb8d42fad075	patch
https://git.kernel.org/stable/c/09883bf257f4243ed5a1fd35078ec6f0d0f3696a	patch
https://git.kernel.org/stable/c/761b45c661af48da6a065868d59ab1e1f64fd9b6	patch
https://git.kernel.org/stable/c/607245c4dbb86d9a10dd8388da0fb82170a99b61	patch
https://git.kernel.org/stable/c/6b419700e459fbf707ca1543b7c1b57a60fedb73	patch
https://git.kernel.org/stable/c/88a8f56e6276f616baad4274c6b8e4683e26e520	patch
https://git.kernel.org/stable/c/f08ffa3e1c8e36b6131f69c5eb23700c28cbd262	patch
https://git.kernel.org/stable/c/6d52a4a0520a6696bdde51caa11f2d6821cd0c01	patch
https://cert-portal.siemens.com/productcert/html/ssa-019113.html
https://cert-portal.siemens.com/productcert/html/ssa-082556.html
1–10 of 11

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.