{"id":"CVE-2026-97998","summary":"netfilter: nfnetlink_log: cope with concurrent instance destruction","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nfnetlink_log: cope with concurrent instance destruction\n\nInstances are refcounted. However, only memory release happens on the\n1 -\u003e 0 transition; the unlink from hashes can occur with any refcount.\n\nUncooperative userspace can force a situation where a queue is pending\nfor destruction from netlink event while a different socket with same\nportid processes an UNBIND request.\n\nWith right timing, this will unhash the instance again:\n\nOops: general protection fault, [..]\nCall Trace:\n \u003cTASK\u003e\n nfulnl_recv_config+0x31a/0xd50\n nfnetlink_rcv_msg+0x7c2/0xeb0","modified":"2026-09-27T03:47:31.384647907Z","published":"2026-09-25T10:23:28.074Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/97xxx/CVE-2026-97998.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/0234d7ca0317be0a623300e1693cd794bbfdf8af"},{"type":"WEB","url":"https://git.kernel.org/stable/c/1a7a8ac9a9f0ad0d410c901cb6f233833518844c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/387d744fa7e499d2c3748a4e60e02ebb24e7fb16"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e2dd0f1f8c4e6334699ea6382e52f6da0c7e45eb"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/97xxx/CVE-2026-97998.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-97998"},{"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":"0597f2680d666a3bcf101ac0c771ba7e50016bbd"},{"fixed":"0234d7ca0317be0a623300e1693cd794bbfdf8af"},{"fixed":"1a7a8ac9a9f0ad0d410c901cb6f233833518844c"},{"fixed":"e2dd0f1f8c4e6334699ea6382e52f6da0c7e45eb"},{"fixed":"387d744fa7e499d2c3748a4e60e02ebb24e7fb16"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-97998.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.6.14"},{"fixed":"6.12.111"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.53"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.2.7"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-97998.json"}}],"schema_version":"1.9.0"}