{"id":"CVE-2026-98320","revision":"31519060feaa43fd9253a939023a6093","records":[{"revision":"31519060feaa43fd9253a939023a6093","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-98320","aliases":[],"title":"netfilter: flowtable: hold reference on ct until flow is released","description":"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 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.","state":0,"publishedAt":"2026-10-06T08:46:14.757+00:00","modifiedAt":"2026-10-19T09:17:30.784+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"net/netfilter/nf_flow_table_core.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"0ff90b6c20340e57616a51ae1a1bf18156d6638a\",\n                            \"lessThan\": \"93ff1594be1aad4da364462dd8db050ebcfda2de\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"0ff90b6c20340e57616a51ae1a1bf18156d6638a\",\n                            \"lessThan\": \"eed6997e8dc40593a539fcc722e7ed51b18db86c\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"0ff90b6c20340e57616a51ae1a1bf18156d6638a\",\n                            \"lessThan\": \"61c6688be282277c6e91ab286a7acd0ae8681ac6\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"0ff90b6c20340e57616a51ae1a1bf18156d6638a\",\n                            \"lessThan\": \"a43cd2b67b91e943273c913237a7a88c50cdcfbc\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"0ff90b6c20340e57616a51ae1a1bf18156d6638a\",\n                            \"lessThan\": \"8274cdc5f9c57e17ed77fc4ba76212536c840f25\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"0ff90b6c20340e57616a51ae1a1bf18156d6638a\",\n                            \"lessThan\": \"12c1ac230f4ca16e0017b62a963ab75e0b48074f\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"0ff90b6c20340e57616a51ae1a1bf18156d6638a\",\n                            \"lessThan\": \"d9e6175a3ee48209ee65f294fc567b4e16b29b74\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"0ff90b6c20340e57616a51ae1a1bf18156d6638a\",\n                            \"lessThan\": \"e75a9fa1d44bcbd66ea02e8781bcca6ea4076e0d\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"net/netfilter/nf_flow_table_core.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"4.16\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"4.16\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.271\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.222\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.189\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.158\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.112\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.54\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.8\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/93ff1594be1aad4da364462dd8db050ebcfda2de","https://git.kernel.org/stable/c/eed6997e8dc40593a539fcc722e7ed51b18db86c","https://git.kernel.org/stable/c/61c6688be282277c6e91ab286a7acd0ae8681ac6","https://git.kernel.org/stable/c/a43cd2b67b91e943273c913237a7a88c50cdcfbc","https://git.kernel.org/stable/c/8274cdc5f9c57e17ed77fc4ba76212536c840f25","https://git.kernel.org/stable/c/12c1ac230f4ca16e0017b62a963ab75e0b48074f","https://git.kernel.org/stable/c/d9e6175a3ee48209ee65f294fc567b4e16b29b74","https://git.kernel.org/stable/c/e75a9fa1d44bcbd66ea02e8781bcca6ea4076e0d"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-98320","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-98320","identifiers":["CVE-2026-98320"]},"retained":false,"historicalAffected":[]}],"coverage":[]}