{"id":"CVE-2026-98217","summary":"IB/mlx4: Fix use-after-free on pkey sysfs registration failure","details":"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 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.","modified":"2026-10-07T02:47:29.976253470Z","published":"2026-10-06T08:44:53.152Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98217.json","cna_assigner":"Linux"},"references":[{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"},{"type":"WEB","url":"https://git.kernel.org/stable/c/0c3482e965b18bc242e54e899d1c4d391ca8e5e3"},{"type":"WEB","url":"https://git.kernel.org/stable/c/1af874e9f4ce22ccf8b10ab5462f32c70d3be21a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/734f066933484f6c7cedea0312763249beed5845"},{"type":"WEB","url":"https://git.kernel.org/stable/c/791471421d848ce13e84f4b21c9e19973d471c4e"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a07bee32127d7c4cd3b1bb9a088e21d0c93634c9"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ced1186fea7c77e16681c7ef4802897885989c3b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/cf20d7476754c00eec04ae23d3e929de33ce0345"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ffb80872617b5f9b3dd1536ec2909029fa66f228"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98217.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98217"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"c1e7e466120b80ce49e91af0c9da1ce6dee4844a"},{"fixed":"791471421d848ce13e84f4b21c9e19973d471c4e"},{"fixed":"734f066933484f6c7cedea0312763249beed5845"},{"fixed":"a07bee32127d7c4cd3b1bb9a088e21d0c93634c9"},{"fixed":"cf20d7476754c00eec04ae23d3e929de33ce0345"},{"fixed":"0c3482e965b18bc242e54e899d1c4d391ca8e5e3"},{"fixed":"ffb80872617b5f9b3dd1536ec2909029fa66f228"},{"fixed":"ced1186fea7c77e16681c7ef4802897885989c3b"},{"fixed":"1af874e9f4ce22ccf8b10ab5462f32c70d3be21a"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98217.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.7.0"},{"fixed":"5.10.271"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.222"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.189"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.158"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.112"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.54"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.2.8"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98217.json"}}],"schema_version":"1.9.0"}