{"id":"CVE-2026-98217","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nIB/mlx4: Fix use-after-free on pkey sysfs registration failure\n\nregister_pkey_tree() ignores errors from register_one_pkey_tree() and\ncontinues registering the remainin…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nIB/mlx4: Fix use-after-free on pkey sysfs registration failure\n\nregister_pkey_tree() ignores errors from register_one_pkey_tree() and\ncontinues registering the remainin…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= c1e7e466120b80ce49e91af0c9da1ce6dee4844a < 791471421d848ce13e84f4b21c9e19973d471c4e","Linux >= c1e7e466120b80ce49e91af0c9da1ce6dee4844a < 734f066933484f6c7cedea0312763249beed5845","Linux >= c1e7e466120b80ce49e91af0c9da1ce6dee4844a < a07bee32127d7c4cd3b1bb9a088e21d0c93634c9","Linux >= c1e7e466120b80ce49e91af0c9da1ce6dee4844a < cf20d7476754c00eec04ae23d3e929de33ce0345","Linux >= c1e7e466120b80ce49e91af0c9da1ce6dee4844a < 0c3482e965b18bc242e54e899d1c4d391ca8e5e3","Linux >= c1e7e466120b80ce49e91af0c9da1ce6dee4844a < ffb80872617b5f9b3dd1536ec2909029fa66f228","Linux >= c1e7e466120b80ce49e91af0c9da1ce6dee4844a < ced1186fea7c77e16681c7ef4802897885989c3b","Linux >= c1e7e466120b80ce49e91af0c9da1ce6dee4844a < 1af874e9f4ce22ccf8b10ab5462f32c70d3be21a","Linux 3.7"],"published":"2026-10-06","updated":"2026-10-06","sourceUpdated":"2026-10-06T09:18:08.423","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-98217","references":[{"url":"https://git.kernel.org/stable/c/0c3482e965b18bc242e54e899d1c4d391ca8e5e3","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/1af874e9f4ce22ccf8b10ab5462f32c70d3be21a","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/734f066933484f6c7cedea0312763249beed5845","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/791471421d848ce13e84f4b21c9e19973d471c4e","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/a07bee32127d7c4cd3b1bb9a088e21d0c93634c9","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/ced1186fea7c77e16681c7ef4802897885989c3b","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/cf20d7476754c00eec04ae23d3e929de33ce0345","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/ffb80872617b5f9b3dd1536ec2909029fa66f228","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-10-06T08:50:17.441Z","slug":"CVE-2026-98217","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nIB/mlx4: Fix use-after-free on pkey sysfs registration failure\n\nregister_pkey_tree() ignores errors from register_one_pkey_tree() and\ncontinues registering the remaining slaves. The per-slave error path has\nalready released the pkey parent kobjects, but their pointers remain\nstored in the device. A later device cleanup therefore passes the stale\npointers to kobject_put(), causing a use-after-free.\n\nClear the parent pointers after releasing a failed slave tree and skip\nunregistered trees during device cleanup. This preserves the existing\nbest-effort registration behavior while preventing a second cleanup of\nthe failed tree.\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":[]}