{"id":"CVE-2026-64001","summary":"ALSA: pcm: oss: Fix setup list UAF on proc write error","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: pcm: oss: Fix setup list UAF on proc write error\n\nsnd_pcm_oss_proc_write() links a newly allocated setup entry into the\nOSS setup list before duplicating the task name. If the task-name\nallocation fails, the error path frees the already linked entry and\nleaves setup_list pointing at freed memory.\n\nA later OSS device open can then walk the stale list entry in\nsnd_pcm_oss_look_for_setup() and dereference freed memory.\n\nAllocate the task name and initialize the setup entry before publishing\nthe entry on setup_list. Also fetch the initial proc read iterator only\nafter taking setup_mutex, so all setup_list traversal follows the same\nlist lifetime rules.","modified":"2026-07-21T03:47:44.458156424Z","published":"2026-07-19T14:56:18.816Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64001.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/4cc54bdd54b337e77115be5b55577d1c58608eae"},{"type":"WEB","url":"https://git.kernel.org/stable/c/8be4efd0dc0093eb7a02ad1aac936bca2a1f04ce"},{"type":"WEB","url":"https://git.kernel.org/stable/c/be387230dc22d870afd0e5d35912b07c2bc323bd"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e13922bb97b4e6f94f8ac02d034f2d4bd65eeb3c"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64001.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-64001"},{"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":"060d77b9c04acd7aef60790398a53f731db8c8fe"},{"fixed":"8be4efd0dc0093eb7a02ad1aac936bca2a1f04ce"},{"fixed":"e13922bb97b4e6f94f8ac02d034f2d4bd65eeb3c"},{"fixed":"be387230dc22d870afd0e5d35912b07c2bc323bd"},{"fixed":"4cc54bdd54b337e77115be5b55577d1c58608eae"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-64001.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.6.17"},{"fixed":"6.12.93"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.35"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.0.12"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-64001.json"}}],"schema_version":"1.7.5"}