{"id":"CVE-2026-52920","summary":"netfilter: xt_policy: fix strict mode inbound policy matching","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: xt_policy: fix strict mode inbound policy matching\n\nmatch_policy_in() walks sec_path entries from the last transform to the\nfirst one, but strict policy matching needs to consume info-\u003epol[] in\nthe same forward order as the rule layout.\n\nDerive the strict-match policy position from the number of transforms\nalready consumed so that multi-element inbound rules are matched\nconsistently.","modified":"2026-07-10T03:54:08.668139449Z","published":"2026-06-24T07:14:15.866Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/52xxx/CVE-2026-52920.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/392cc1d8408b5665215c1e9290bbf0f92339b043"},{"type":"WEB","url":"https://git.kernel.org/stable/c/4b2b4d7d4e203c92db8966b163edfacb1f0e1e29"},{"type":"WEB","url":"https://git.kernel.org/stable/c/82664d0f1ba25e4f9a71994954abae24c60f4067"},{"type":"WEB","url":"https://git.kernel.org/stable/c/938867e870fb5471bb16f442aeac81326e05bf65"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b130a6eefa02bd4d475f2f059da8bcfb3e7d18d9"},{"type":"WEB","url":"https://git.kernel.org/stable/c/eb323f7b82d2e2f638de0cc2a177803eb20e0707"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f98b7f85e04b40e28b08c461ded0cc79f14f5509"},{"type":"WEB","url":"https://git.kernel.org/stable/c/fc1c518bb1f054831ecabb32da9b8e1dff9699c6"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/52xxx/CVE-2026-52920.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-52920"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"c4b885139203d37f76662c37ae645fe8e0f4e4e5"},{"fixed":"eb323f7b82d2e2f638de0cc2a177803eb20e0707"},{"fixed":"fc1c518bb1f054831ecabb32da9b8e1dff9699c6"},{"fixed":"f98b7f85e04b40e28b08c461ded0cc79f14f5509"},{"fixed":"82664d0f1ba25e4f9a71994954abae24c60f4067"},{"fixed":"b130a6eefa02bd4d475f2f059da8bcfb3e7d18d9"},{"fixed":"938867e870fb5471bb16f442aeac81326e05bf65"},{"fixed":"392cc1d8408b5665215c1e9290bbf0f92339b043"},{"fixed":"4b2b4d7d4e203c92db8966b163edfacb1f0e1e29"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-52920.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.6.17"},{"fixed":"5.10.258"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.209"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.175"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.141"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.91"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.33"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.0.10"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-52920.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H"}]}