{"id":"DEBIAN-CVE-2022-49827","details":"In the Linux kernel, the following vulnerability has been resolved:  drm: Fix potential null-ptr-deref in drm_vblank_destroy_worker()  drm_vblank_init() call drmm_add_action_or_reset() with drm_vblank_init_release() as action. If __drmm_add_action() failed, will directly call drm_vblank_init_release() with the vblank whose worker is NULL. As the resule, a null-ptr-deref will happen in kthread_destroy_worker(). Add the NULL check before calling drm_vblank_destroy_worker().  BUG: null-ptr-deref KASAN: null-ptr-deref in range [0x0000000000000068-0x000000000000006f] CPU: 5 PID: 961 Comm: modprobe Not tainted 6.0.0-11331-gd465bff130bf-dirty RIP: 0010:kthread_destroy_worker+0x25/0xb0   Call Trace:     \u003cTASK\u003e     drm_vblank_init_release+0x124/0x220 [drm]     ? drm_crtc_vblank_restore+0x8b0/0x8b0 [drm]     __drmm_add_action_or_reset+0x41/0x50 [drm]     drm_vblank_init+0x282/0x310 [drm]     vkms_init+0x35f/0x1000 [vkms]     ? 0xffffffffc4508000     ? lock_is_held_type+0xd7/0x130     ? __kmem_cache_alloc_node+0x1c2/0x2b0     ? lock_is_held_type+0xd7/0x130     ? 0xffffffffc4508000     do_one_initcall+0xd0/0x4f0     ...     do_syscall_64+0x35/0x80     entry_SYSCALL_64_after_hwframe+0x46/0xb0","modified":"2026-09-01T16:05:33.902020987Z","published":"2025-05-01T15:16:06.150Z","upstream":["CVE-2022-49827"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2022-49827"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:12","purl":"pkg:deb/debian/linux?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.0.10-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2022-49827.json"}},{"package":{"name":"linux","ecosystem":"Debian:13","purl":"pkg:deb/debian/linux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.0.10-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2022-49827.json"}},{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.0.10-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2022-49827.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:N/I:N/A:H"}]}