{"id":"CVE-2026-98320","title":"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->ext area inmediately, the rcu typesafe\nsemantics also allow to refer to …","summary":"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->ext area inmediately, the rcu typesafe\nsemantics also allow to refer to …","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 0ff90b6c20340e57616a51ae1a1bf18156d6638a < 93ff1594be1aad4da364462dd8db050ebcfda2de","Linux >= 0ff90b6c20340e57616a51ae1a1bf18156d6638a < eed6997e8dc40593a539fcc722e7ed51b18db86c","Linux >= 0ff90b6c20340e57616a51ae1a1bf18156d6638a < 61c6688be282277c6e91ab286a7acd0ae8681ac6","Linux >= 0ff90b6c20340e57616a51ae1a1bf18156d6638a < a43cd2b67b91e943273c913237a7a88c50cdcfbc","Linux >= 0ff90b6c20340e57616a51ae1a1bf18156d6638a < 8274cdc5f9c57e17ed77fc4ba76212536c840f25","Linux >= 0ff90b6c20340e57616a51ae1a1bf18156d6638a < 12c1ac230f4ca16e0017b62a963ab75e0b48074f","Linux >= 0ff90b6c20340e57616a51ae1a1bf18156d6638a < d9e6175a3ee48209ee65f294fc567b4e16b29b74","Linux >= 0ff90b6c20340e57616a51ae1a1bf18156d6638a < e75a9fa1d44bcbd66ea02e8781bcca6ea4076e0d","Linux 4.16"],"published":"2026-10-06","updated":"2026-10-06","sourceUpdated":"2026-10-06T09:18:23.957","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-98320","references":[{"url":"https://git.kernel.org/stable/c/12c1ac230f4ca16e0017b62a963ab75e0b48074f","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/61c6688be282277c6e91ab286a7acd0ae8681ac6","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/8274cdc5f9c57e17ed77fc4ba76212536c840f25","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/93ff1594be1aad4da364462dd8db050ebcfda2de","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/a43cd2b67b91e943273c913237a7a88c50cdcfbc","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/d9e6175a3ee48209ee65f294fc567b4e16b29b74","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/e75a9fa1d44bcbd66ea02e8781bcca6ea4076e0d","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/eed6997e8dc40593a539fcc722e7ed51b18db86c","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-10-06T08:50:17.407Z","slug":"CVE-2026-98320","body":"## Overview\n\nIn 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->ext 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}