{"id":"CVE-2026-98320","summary":"netfilter: flowtable: hold reference on ct until flow is released","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: flowtable: hold reference on ct until flow is released\n\nnf_ct_put() releases the ct-\u003eext area inmediately, the rcu typesafe\nsemantics also allow to refer to the wrong conntrack from the flowtable\ndatapath. Hold reference on ct until flow is released after rcu grace\nperiod.\n\nAdd rcu_barrier() on module exit path, to ensure pending flow entries\nare release before module goes away.","modified":"2026-10-08T02:52:57.698415708Z","published":"2026-10-06T08:46:14.757Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98320.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/12c1ac230f4ca16e0017b62a963ab75e0b48074f"},{"type":"WEB","url":"https://git.kernel.org/stable/c/61c6688be282277c6e91ab286a7acd0ae8681ac6"},{"type":"WEB","url":"https://git.kernel.org/stable/c/8274cdc5f9c57e17ed77fc4ba76212536c840f25"},{"type":"WEB","url":"https://git.kernel.org/stable/c/93ff1594be1aad4da364462dd8db050ebcfda2de"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a43cd2b67b91e943273c913237a7a88c50cdcfbc"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d9e6175a3ee48209ee65f294fc567b4e16b29b74"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e75a9fa1d44bcbd66ea02e8781bcca6ea4076e0d"},{"type":"WEB","url":"https://git.kernel.org/stable/c/eed6997e8dc40593a539fcc722e7ed51b18db86c"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98320.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98320"},{"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":"0ff90b6c20340e57616a51ae1a1bf18156d6638a"},{"fixed":"93ff1594be1aad4da364462dd8db050ebcfda2de"},{"fixed":"eed6997e8dc40593a539fcc722e7ed51b18db86c"},{"fixed":"61c6688be282277c6e91ab286a7acd0ae8681ac6"},{"fixed":"a43cd2b67b91e943273c913237a7a88c50cdcfbc"},{"fixed":"8274cdc5f9c57e17ed77fc4ba76212536c840f25"},{"fixed":"12c1ac230f4ca16e0017b62a963ab75e0b48074f"},{"fixed":"d9e6175a3ee48209ee65f294fc567b4e16b29b74"},{"fixed":"e75a9fa1d44bcbd66ea02e8781bcca6ea4076e0d"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98320.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.16.0"},{"fixed":"5.10.271"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.222"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.189"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.158"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.112"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.54"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.2.8"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98320.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}