{"affected":[{"defaultStatus":"unaffected","product":"Linux","source":"CNA: Linux","vendor":"Linux","versions":[{"lessThan":"1d160dfb3fdf11ba9447e862c548447f91f4e74a","status":"affected","version":"5e6c2b4f916157e8f10d093d43e88b2a250d1774","versionType":"git"},{"lessThan":"e884a6c2d49a6c12761e5bed851e9fe93bd923a1","status":"affected","version":"5e6c2b4f916157e8f10d093d43e88b2a250d1774","versionType":"git"},{"lessThan":"3acd2016421b2e628acad65495d15493bf7a3bc3","status":"affected","version":"5e6c2b4f916157e8f10d093d43e88b2a250d1774","versionType":"git"},{"lessThan":"4979524f5a2a8210e87fde2f642b0dc060860821","status":"affected","version":"5e6c2b4f916157e8f10d093d43e88b2a250d1774","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","source":"CNA: Linux","vendor":"Linux","versions":[{"status":"affected","version":"5.9"},{"lessThan":"5.9","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.156","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.80","versionType":"semver"},{"lessThanOrEqual":"6.0.*","status":"unaffected","version":"6.0.10","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"6.1","versionType":"original_commit_for_fix"}]}],"cveId":"CVE-2022-49827","cwes":[],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm: Fix potential null-ptr-deref in drm_vblank_destroy_worker()\n\ndrm_vblank_init() call drmm_add_action_or_reset() with\ndrm_vblank_init_release() as action. If __drmm_add_action() failed, will\ndirectly call drm_vblank_init_release() with the vblank whose worker is\nNULL. As the resule, a null-ptr-deref will happen in\nkthread_destroy_worker(). Add the NULL check before calling\ndrm_vblank_destroy_worker().\n\nBUG: null-ptr-deref\nKASAN: null-ptr-deref in range [0x0000000000000068-0x000000000000006f]\nCPU: 5 PID: 961 Comm: modprobe Not tainted 6.0.0-11331-gd465bff130bf-dirty\nRIP: 0010:kthread_destroy_worker+0x25/0xb0\n  Call Trace:\n    <TASK>\n    drm_vblank_init_release+0x124/0x220 [drm]\n    ? drm_crtc_vblank_restore+0x8b0/0x8b0 [drm]\n    __drmm_add_action_or_reset+0x41/0x50 [drm]\n    drm_vblank_init+0x282/0x310 [drm]\n    vkms_init+0x35f/0x1000 [vkms]\n    ? 0xffffffffc4508000\n    ? lock_is_held_type+0xd7/0x130\n    ? __kmem_cache_alloc_node+0x1c2/0x2b0\n    ? lock_is_held_type+0xd7/0x130\n    ? 0xffffffffc4508000\n    do_one_initcall+0xd0/0x4f0\n    ...\n    do_syscall_64+0x35/0x80\n    entry_SYSCALL_64_after_hwframe+0x46/0xb0","epss":{"date":"2026-11-05","percentile":0.12201,"score":0.00216},"exploits":[],"kev":null,"metrics":[],"modifiedAt":1793908808539,"publishedAt":1746108586805,"references":[{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/1d160dfb3fdf11ba9447e862c548447f91f4e74a"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/e884a6c2d49a6c12761e5bed851e9fe93bd923a1"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/3acd2016421b2e628acad65495d15493bf7a3bc3"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/4979524f5a2a8210e87fde2f642b0dc060860821"}],"remediation":[],"revision":"79a9e01ebb8e29bf36cf143653498697204fd4bfbd6a64fea218deccdeaefe43","sources":[{"modifiedAt":1793908808539,"name":"CNA: Linux","retrievedAt":1793909458374,"url":"https://www.cve.org/CVERecord?id=CVE-2022-49827"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1793909486711,"url":"https://api.first.org/data/v1/epss?cve=CVE-2022-49827"}],"ssvc":{"assessedAt":1793908208629,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"partial"},"status":"published","title":"drm: Fix potential null-ptr-deref in drm_vblank_destroy_worker()","updatedAt":1793909486711}