{"id":"CVE-2022-49133","summary":"drm/amdkfd: svm range restore work deadlock when process exit","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdkfd: svm range restore work deadlock when process exit\n\nkfd_process_notifier_release flush svm_range_restore_work\nwhich calls svm_range_list_lock_and_flush_work to flush deferred_list\nwork, but if deferred_list work mmput release the last user, it will\ncall exit_mmap -\u003e notifier_release, it is deadlock with below backtrace.\n\nMove flush svm_range_restore_work to kfd_process_wq_release to avoid\ndeadlock. Then svm_range_restore_work take task-\u003emm ref to avoid mm is\ngone while validating and mapping ranges to GPU.\n\nWorkqueue: events svm_range_deferred_list_work [amdgpu]\nCall Trace:\n wait_for_completion+0x94/0x100\n __flush_work+0x12a/0x1e0\n __cancel_work_timer+0x10e/0x190\n cancel_delayed_work_sync+0x13/0x20\n kfd_process_notifier_release+0x98/0x2a0 [amdgpu]\n __mmu_notifier_release+0x74/0x1f0\n exit_mmap+0x170/0x200\n mmput+0x5d/0x130\n svm_range_deferred_list_work+0x104/0x230 [amdgpu]\n process_one_work+0x220/0x3c0","modified":"2026-03-20T12:22:11.772983Z","published":"2025-02-26T01:55:07.722Z","related":["SUSE-SU-2025:1176-1","SUSE-SU-2025:1241-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49133.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/6225bb3a88d22594aacea2485dc28ca12d596721"},{"type":"WEB","url":"https://git.kernel.org/stable/c/858822905f4bf44100d63c5e22e263109976f7cb"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a6be83086e91891081e0589e4b4645bf4643e897"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49133.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-49133"},{"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":"42de677f79999791bee4e21be318c32d90ab62c6"},{"fixed":"a6be83086e91891081e0589e4b4645bf4643e897"},{"fixed":"858822905f4bf44100d63c5e22e263109976f7cb"},{"fixed":"6225bb3a88d22594aacea2485dc28ca12d596721"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-49133.json"}}],"schema_version":"1.7.5"}