CVE-2026-31496
netfilter: nf_conntrack_expect: skip expectations in other netns via proc
In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_conntrack_expect: skip expectations in other netns via proc Skip expectations that do not reside in this netns. Similar to e77e6ff502ea ("netfilter: conntrack: do not dump other netns's conntrack entries via proc").
Fixes and workarounds
No remediation reported in collected sources.
Missing remediation information is not evidence that no patch exists.
Affected products and versions
| Product | Versions | Authority |
|---|---|---|
| Linux Linux |
≥ 9b03f38d0487f3908696242286d934c9b38f9d2a; < 2028405ea6987b4448784e439413202cfe19f43f (affected, git) ≥ 9b03f38d0487f3908696242286d934c9b38f9d2a; < 168145c87444619e3e649322bbe7719ecd00d411 (affected, git) ≥ 9b03f38d0487f3908696242286d934c9b38f9d2a; < dcfcd95b3ae7683e8ae55c92284b3430ce614bc7 (affected, git) ≥ 9b03f38d0487f3908696242286d934c9b38f9d2a; < 9ca8c7452493d915f9bbf2f39331e6c583d07a23 (affected, git) ≥ 9b03f38d0487f3908696242286d934c9b38f9d2a; < 3265ad619987cb551edaf797ed056d80ac450225 (affected, git) ≥ 9b03f38d0487f3908696242286d934c9b38f9d2a; < 3db5647984de03d9cae0dcddb509b058351f0ee4 (affected, git) Other versions: unaffected |
CNA: Linux |
| Linux Linux |
2.6.28 (affected) ≥ 0; < 2.6.28 (unaffected, semver) ≥ 6.1.168; ≤ 6.1.* (unaffected, semver) ≥ 6.6.131; ≤ 6.6.* (unaffected, semver) ≥ 6.12.80; ≤ 6.12.* (unaffected, semver) ≥ 6.18.21; ≤ 6.18.* (unaffected, semver) ≥ 6.19.11; ≤ 6.19.* (unaffected, semver) ≥ 7.0; ≤ * (unaffected, original_commit_for_fix) Other versions: affected |
CNA: Linux |
| SIMATIC S7-1500 CPU 1518-4 PN/DP MFP Siemens |
≥ V3.1.6; < * (affected, custom)
Other versions: unknown |
ADP: siemens-SADP |
| SIMATIC S7-1500 CPU 1518-4 PN/DP MFP Siemens |
≥ V3.1.5; < * (affected, custom)
Other versions: unknown |
ADP: siemens-SADP |
| SIMATIC S7-1500 CPU 1518-4 PN/DP MFP Siemens |
≥ V3.1.7; < * (affected, custom)
Other versions: unknown |
ADP: siemens-SADP |
| SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP Siemens |
≥ V3.1.6; < * (affected, custom)
Other versions: unknown |
ADP: siemens-SADP |
| SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP Siemens |
≥ V3.1.5; < * (affected, custom)
Other versions: unknown |
ADP: siemens-SADP |
| SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP Siemens |
≥ V3.1.7; < * (affected, custom)
Other versions: unknown |
ADP: siemens-SADP |
| SIPLUS S7-1500 CPU 1518-4 PN/DP MFP Siemens |
≥ V3.1.6; < * (affected, custom)
Other versions: unknown |
ADP: siemens-SADP |
| SIPLUS S7-1500 CPU 1518-4 PN/DP MFP Siemens |
≥ V3.1.5; < * (affected, custom)
Other versions: unknown |
ADP: siemens-SADP |
| SIPLUS S7-1500 CPU 1518-4 PN/DP MFP Siemens |
≥ V3.1.7; < * (affected, custom)
Other versions: unknown |
ADP: siemens-SADP |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
No CVSS assessment reported. An unscored record is not a low-severity determination.
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://git.kernel.org/stable/c/2028405ea6987b4448784e439413202cfe19f43fCNA: Linux
- https://git.kernel.org/stable/c/168145c87444619e3e649322bbe7719ecd00d411CNA: Linux
- https://git.kernel.org/stable/c/dcfcd95b3ae7683e8ae55c92284b3430ce614bc7CNA: Linux
- https://git.kernel.org/stable/c/9ca8c7452493d915f9bbf2f39331e6c583d07a23CNA: Linux
- https://git.kernel.org/stable/c/3265ad619987cb551edaf797ed056d80ac450225CNA: Linux
- https://git.kernel.org/stable/c/3db5647984de03d9cae0dcddb509b058351f0ee4CNA: Linux
- https://cert-portal.siemens.com/productcert/html/ssa-082556.htmlADP: siemens-SADP
- https://cert-portal.siemens.com/productcert/html/ssa-019113.htmlADP: siemens-SADP
- https://cert-portal.siemens.com/productcert/html/ssa-457936.htmlADP: siemens-SADP
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