CVE-2026-31416netfilter: nfnetlink_log: account for netlink header size
Updated under an hour ago ()
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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.
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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 15, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
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
- https://git.kernel.org/stable/c/4ec216410fac9de83c99177a160ebb8d42fad075patch
- https://git.kernel.org/stable/c/09883bf257f4243ed5a1fd35078ec6f0d0f3696apatch
- https://git.kernel.org/stable/c/761b45c661af48da6a065868d59ab1e1f64fd9b6patch
- https://git.kernel.org/stable/c/607245c4dbb86d9a10dd8388da0fb82170a99b61patch
- https://git.kernel.org/stable/c/6b419700e459fbf707ca1543b7c1b57a60fedb73patch
- https://git.kernel.org/stable/c/88a8f56e6276f616baad4274c6b8e4683e26e520patch
- https://git.kernel.org/stable/c/f08ffa3e1c8e36b6131f69c5eb23700c28cbd262patch
- https://git.kernel.org/stable/c/6d52a4a0520a6696bdde51caa11f2d6821cd0c01patch
- https://cert-portal.siemens.com/productcert/html/ssa-019113.html
- https://cert-portal.siemens.com/productcert/html/ssa-082556.html
- https://cert-portal.siemens.com/productcert/html/ssa-457936.html
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.