{"id":"CVE-2026-45873","summary":"netfilter: nft_set_rbtree: check for partial overlaps in anonymous sets","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nft_set_rbtree: check for partial overlaps in anonymous sets\n\nUserspace provides an optimized representation in case intervals are\nadjacent, where the end element is omitted.\n\nThe existing partial overlap detection logic skips anonymous set checks\non start elements for this reason.\n\nHowever, it is possible to add intervals that overlap to this anonymous\nwhere two start elements with the same, eg. A-B, A-C where C \u003c B.\n\n      start     end\n\tA        B\n      start  end\n        A     C\n\nRestore the check on overlapping start elements to report an overlap.","modified":"2026-11-08T02:30:56.359386240Z","published":"2026-05-27T12:15:52.916Z","related":["SUSE-SU-2026:23066-1","SUSE-SU-2026:23068-1","SUSE-SU-2026:23193-1","SUSE-SU-2026:23194-1","SUSE-SU-2026:23221-1","SUSE-SU-2026:23231-1","SUSE-SU-2026:23237-1","SUSE-SU-2026:23241-1","SUSE-SU-2026:23244-1","SUSE-SU-2026:3790-1","SUSE-SU-2026:3810-1","openSUSE-SU-2026:21555-1"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45873.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/029e5f6a95e905b12d6bc20421be32a01e0eb311"},{"type":"WEB","url":"https://git.kernel.org/stable/c/05feaf826390fd16f1deb89dd9412def3b2a280f"},{"type":"WEB","url":"https://git.kernel.org/stable/c/4780ec142cbb24b794129d3080eee5cac2943ffc"},{"type":"WEB","url":"https://git.kernel.org/stable/c/7ca5813e1b21ef300e04593f47b073ef3217aac6"},{"type":"WEB","url":"https://git.kernel.org/stable/c/dad14d22dff1a191612acb98facceb303d0524a2"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e6497e06a102870803a59570d75ed2c36d7e11b3"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f1381ce0a1dd013610985e1c4260908163a427df"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f1535d56fc3f6c625b7e0559c006bd0318791bb1"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45873.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-45873"},{"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":"4aacf3d78424293e318c616016865380b37b9cc5"},{"fixed":"7ca5813e1b21ef300e04593f47b073ef3217aac6"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"2bf1435fa19d2c58054391b3bba40d5510a5758c"},{"fixed":"029e5f6a95e905b12d6bc20421be32a01e0eb311"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"318cb24a4c3fce8140afaf84e4d45fcb76fb280b"},{"fixed":"f1381ce0a1dd013610985e1c4260908163a427df"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"c9e6978e2725a7d4b6cd23b2facd3f11422c0643"},{"fixed":"f1535d56fc3f6c625b7e0559c006bd0318791bb1"},{"fixed":"05feaf826390fd16f1deb89dd9412def3b2a280f"},{"fixed":"dad14d22dff1a191612acb98facceb303d0524a2"},{"fixed":"e6497e06a102870803a59570d75ed2c36d7e11b3"},{"fixed":"4780ec142cbb24b794129d3080eee5cac2943ffc"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"5.10.166"},{"fixed":"5.10.252"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"5.15.91"},{"fixed":"5.15.202"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"6.1.9"},{"fixed":"6.1.165"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"4.19.316"},{"fixed":"4.20"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"5.4.262"},{"fixed":"5.5"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"7ab87a326f20c52ff4d9972052d085be951c704b"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"181859bdfb9734aca449512fccaee4cacce64aed"}]}],"versions":["v5.10.251","v5.10.250","v5.10.249","v5.10.248","v5.10.247","v5.10.246","v5.10.245","v5.10.244","v5.10.243","v5.10.242","v5.10.241","v5.10.240","v5.10.239","v5.10.238","v5.10.237","v5.10.236","v5.10.235","v5.10.234","v5.10.233","v5.10.232","v5.10.231","v5.10.230","v5.10.229","v5.10.228","v5.10.227","v5.10.226","v5.10.225","v5.10.224","v5.10.223","v5.10.222","v5.10.221","v5.10.220","v5.10.219","v5.10.218","v5.10.217","v5.10.216","v5.10.215","v5.10.214","v5.10.213","v5.10.212","v5.10.211","v5.10.210","v5.10.209","v5.10.208","v5.10.207","v5.10.206","v5.10.205","v5.10.204","v5.10.203","v5.10.202","v5.10.201","v5.10.200","v5.10.199","v5.10.198","v5.10.197","v5.10.196","v5.10.195","v5.10.194","v5.10.193","v5.10.192","v5.10.191","v5.10.190","v5.10.189","v5.10.188","v5.10.187","v5.10.186","v5.10.185","v5.10.184","v5.10.183","v5.10.182","v5.10.181","v5.10.180","v5.10.179","v5.10.178","v5.10.177","v5.10.176","v5.10.175","v5.10.174","v5.10.173","v5.10.172","v5.10.171","v5.10.170","v5.10.169","v5.10.168","v5.10.167","v5.10.166","v5.15.201","v5.15.200","v5.15.199","v5.15.198","v5.15.197","v5.15.196","v5.15.195","v5.15.194","v5.15.193","v5.15.192","v5.15.191","v5.15.190","v5.15.189","v5.15.188","v5.15.187","v5.15.186","v5.15.185","v5.15.184","v5.15.183","v5.15.182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