{"id":"CVE-2026-23139","summary":"netfilter: nf_conncount: update last_gc only when GC has been performed","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nf_conncount: update last_gc only when GC has been performed\n\nCurrently last_gc is being updated everytime a new connection is\ntracked, that means that it is updated even if a GC wasn't performed.\nWith a sufficiently high packet rate, it is possible to always bypass\nthe GC, causing the list to grow infinitely.\n\nUpdate the last_gc value only when a GC has been actually performed.","modified":"2026-04-28T18:29:28.167257454Z","published":"2026-02-14T15:22:24.059Z","related":["SUSE-SU-2026:0962-1","SUSE-SU-2026:1081-1","SUSE-SU-2026:20667-1","SUSE-SU-2026:20720-1","SUSE-SU-2026:20838-1","SUSE-SU-2026:20845-1","SUSE-SU-2026:20876-1","SUSE-SU-2026:20931-1","SUSE-SU-2026:21284-1","openSUSE-SU-2026:20416-1"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23139.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/26a82dce2beee39c43c109d9647e16f49cb02a35"},{"type":"WEB","url":"https://git.kernel.org/stable/c/2c7c71113ed6d3e2f3aca4c088f22283016ff34f"},{"type":"WEB","url":"https://git.kernel.org/stable/c/3cd717359e56f82f06cbf8279b47a7d79880c6f3"},{"type":"WEB","url":"https://git.kernel.org/stable/c/7811ba452402d58628e68faedf38745b3d485e3c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/8bdafdf4900040a81422056cabe5e00a37bd101a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/9f45588993d7f115280fc726119ca86fba32a811"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c4cde57c8affdcca5bcff53a1047e15d268bdca1"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23139.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-23139"},{"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":"f106694733c66a48740c25bc4e212e9b2ea364ce"},{"fixed":"2c7c71113ed6d3e2f3aca4c088f22283016ff34f"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"be69850b461e7b491d87a22e33ab76fdd04b725e"},{"fixed":"c4cde57c8affdcca5bcff53a1047e15d268bdca1"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"d265929930e2ffafc744c0ae05fb70acd53be1ee"},{"fixed":"9f45588993d7f115280fc726119ca86fba32a811"},{"fixed":"3cd717359e56f82f06cbf8279b47a7d79880c6f3"},{"fixed":"26a82dce2beee39c43c109d9647e16f49cb02a35"},{"fixed":"8bdafdf4900040a81422056cabe5e00a37bd101a"},{"fixed":"7811ba452402d58628e68faedf38745b3d485e3c"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-23139.json"}}],"schema_version":"1.7.5"}