{"id":"CVE-2026-97998","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nfnetlink_log: cope with concurrent instance destruction\n\nInstances are refcounted","summary":"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 -> 0 transition; the unlink…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 0597f2680d666a3bcf101ac0c771ba7e50016bbd < 0234d7ca0317be0a623300e1693cd794bbfdf8af","Linux >= 0597f2680d666a3bcf101ac0c771ba7e50016bbd < 1a7a8ac9a9f0ad0d410c901cb6f233833518844c","Linux >= 0597f2680d666a3bcf101ac0c771ba7e50016bbd < e2dd0f1f8c4e6334699ea6382e52f6da0c7e45eb","Linux >= 0597f2680d666a3bcf101ac0c771ba7e50016bbd < 387d744fa7e499d2c3748a4e60e02ebb24e7fb16","Linux 2.6.14"],"published":"2026-09-25","updated":"2026-09-25","sourceUpdated":"2026-09-25T11:17:28.107","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-97998","references":[{"url":"https://git.kernel.org/stable/c/0234d7ca0317be0a623300e1693cd794bbfdf8af","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/1a7a8ac9a9f0ad0d410c901cb6f233833518844c","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/387d744fa7e499d2c3748a4e60e02ebb24e7fb16","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/e2dd0f1f8c4e6334699ea6382e52f6da0c7e45eb","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-09-25T11:06:38.863Z","slug":"CVE-2026-97998","body":"## Overview\n\nIn 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 -> 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 <TASK>\n nfulnl_recv_config+0x31a/0xd50\n nfnetlink_rcv_msg+0x7c2/0xeb0\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":[]}