{"id":"CVE-2026-80572","summary":"Input: byd - synchronize timer deletion before freeing private data","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nInput: byd - synchronize timer deletion before freeing private data\n\nbyd_disconnect() uses timer_delete() before freeing the driver's private\ndata.  This does not wait for a running byd_clear_touch() callback, which\ndereferences the private data and its psmouse pointer.  A callback racing\nwith disconnect can therefore access the private data after it has been\nfreed.  The timer can also still be re-armed by byd_process_byte() while\nthe disconnect is in progress.\n\nUse timer_shutdown_sync() before freeing the private data: it waits for\na running callback and turns any later re-arm attempt into a no-op.","modified":"2026-08-28T03:47:28.905621740Z","published":"2026-08-26T14:37:33.141Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80572.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/28d984a66b9e14be74986167b6ad40b5e0daf19a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/2e509ef60ee41a2da0deb062c262bb530143fb37"},{"type":"WEB","url":"https://git.kernel.org/stable/c/84b205297fa15f97510342221d8c9a0119711478"},{"type":"WEB","url":"https://git.kernel.org/stable/c/8dbfd8e32a13e116790780ed0be82b5a05eb9916"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c83e79c0842ed29860648bcce5022ef0ba5001c6"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ee944a706a18322b4a2599eebe8040a2994e928f"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80572.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80572"},{"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":"2d5f5611dd0de52e9a52b56391a7049a52184e72"},{"fixed":"84b205297fa15f97510342221d8c9a0119711478"},{"fixed":"28d984a66b9e14be74986167b6ad40b5e0daf19a"},{"fixed":"ee944a706a18322b4a2599eebe8040a2994e928f"},{"fixed":"8dbfd8e32a13e116790780ed0be82b5a05eb9916"},{"fixed":"2e509ef60ee41a2da0deb062c262bb530143fb37"},{"fixed":"c83e79c0842ed29860648bcce5022ef0ba5001c6"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-80572.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.6.0"},{"fixed":"6.1.185"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.154"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.106"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.46"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.1.10"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-80572.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}