{"id":"CVE-2026-31496","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nf_conntrack_expect: skip expectations in other netns via proc\n\nSkip expectations that do not reside in this netns.\n\nSimilar to e77e6ff502ea (\"netfilter: con…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nf_conntrack_expect: skip expectations in other netns via proc\n\nSkip expectations that do not reside in this netns.\n\nSimilar to e77e6ff502ea (\"netfilter: con…","severity":"medium","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","vendor":"linux","product":"linux_kernel","affected":["linux_kernel >= 2.6.28.1, < 6.1.168","linux_kernel >= 6.2, < 6.6.131","linux_kernel >= 6.7, < 6.12.80","linux_kernel >= 6.13, < 6.18.21","linux_kernel >= 6.19, < 6.19.11","linux_kernel = 2.6.28","linux_kernel = 7.0"],"patched":["linux_kernel 6.19.11"],"published":"2026-04-22","updated":"2026-10-15","sourceUpdated":"2026-10-15T02:19:08.577","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-31496","references":[{"url":"https://git.kernel.org/stable/c/168145c87444619e3e649322bbe7719ecd00d411","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/2028405ea6987b4448784e439413202cfe19f43f","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/3265ad619987cb551edaf797ed056d80ac450225","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/3db5647984de03d9cae0dcddb509b058351f0ee4","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/9ca8c7452493d915f9bbf2f39331e6c583d07a23","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/dcfcd95b3ae7683e8ae55c92284b3430ce614bc7","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-019113.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-082556.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-457936.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}],"tags":["nvd","cve.org"],"epss":0.00125,"epssPercentile":0.02208,"ingestedAt":"2026-09-08T15:33:26.990Z","slug":"CVE-2026-31496","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nf_conntrack_expect: skip expectations in other netns via proc\n\nSkip expectations that do not reside in this netns.\n\nSimilar to e77e6ff502ea (\"netfilter: conntrack: do not dump other netns's\nconntrack entries via proc\").\n\n## Affected\n\n- `linux_kernel >= 2.6.28.1, < 6.1.168`\n- `linux_kernel >= 6.2, < 6.6.131`\n- `linux_kernel >= 6.7, < 6.12.80`\n- `linux_kernel >= 6.13, < 6.18.21`\n- `linux_kernel >= 6.19, < 6.19.11`\n- `linux_kernel = 2.6.28`\n- `linux_kernel = 7.0`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `linux_kernel 6.19.11`","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":221719,"id":"CVE-2026-31496","ts":1792035335819,"field":"cvss","old":null,"new":"5.5"},{"seq":221718,"id":"CVE-2026-31496","ts":1792035335819,"field":"severity","old":"none","new":"medium"}]}