{"id":"CVE-2026-98309","published":"2026-10-06T09:18:22.300","lastModified":"2026-10-06T09:18:22.300","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/vc4: Use managed KMS polling to fix UAF on unbind\n\nvc4_kms_load() calls drm_kms_helper_poll_init() but the driver provides\nno matching drm_kms_helper_poll_fini(). The output poll work stays\nscheduled after unbind and runs on the freed drm_device:\n\n  # modprobe vc4; rmmod vc4; sleep 10\n  BUG: KASAN: slab-use-after-free in delayed_work_timer_fn\n  BUG: KASAN: slab-use-after-free in drm_client_dev_hotplug [drm]\n  Workqueue: events output_poll_execute [drm_kms_helper]\n  Allocated by task 171: __devm_drm_dev_alloc\n  Freed by task 262 (rmmod): drm_dev_put / component_del\n\nUse drmm_kms_helper_poll_init() so polling is finalized with the device,\nas other drivers do.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":[],"vendors":[],"products":[],"references":[{"url":"https://git.kernel.org/stable/c/073a30d75f309812ed61af134f24ffef4107b13a","tags":[]},{"url":"https://git.kernel.org/stable/c/7f9780df677370a19b4ec9764f13b1b82073e0d9","tags":[]},{"url":"https://git.kernel.org/stable/c/b6beee927e7f4e3142032ff91b2d0417cdddc0f6","tags":[]},{"url":"https://git.kernel.org/stable/c/cf0c4432bda37b02e7d430ff5017228ceb7caf0c","tags":[]},{"url":"https://git.kernel.org/stable/c/ee507691c18f9fee5d4751e295ab9a7ff31d59ae","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}