{"id":"CVE-2022-49133","state":"PUBLISHED","title":"drm/amdkfd: svm range restore work deadlock when process exit","description":"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 -> 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->mm 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","publishedAt":"2025-02-26T01:55:07.722Z","updatedAt":"2026-08-12T23:58:00.841Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"8a7c184a16d73ab25360e0f5997f82306ff5d5a2","status":"affected","lessThan":"a6be83086e91891081e0589e4b4645bf4643e897","versionType":"git"},{"version":"8a7c184a16d73ab25360e0f5997f82306ff5d5a2","status":"affected","lessThan":"858822905f4bf44100d63c5e22e263109976f7cb","versionType":"git"},{"version":"8a7c184a16d73ab25360e0f5997f82306ff5d5a2","status":"affected","lessThan":"6225bb3a88d22594aacea2485dc28ca12d596721","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/amd/amdkfd/kfd_process.c","drivers/gpu/drm/amd/amdkfd/kfd_svm.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.14","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.14","versionType":"semver"},{"version":"5.16.20","status":"unaffected","lessThanOrEqual":"5.16.*","versionType":"semver"},{"version":"5.17.3","status":"unaffected","lessThanOrEqual":"5.17.*","versionType":"semver"},{"version":"5.18","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/amd/amdkfd/kfd_process.c","drivers/gpu/drm/amd/amdkfd/kfd_svm.c"]}],"references":["https://git.kernel.org/stable/c/a6be83086e91891081e0589e4b4645bf4643e897","https://git.kernel.org/stable/c/858822905f4bf44100d63c5e22e263109976f7cb","https://git.kernel.org/stable/c/6225bb3a88d22594aacea2485dc28ca12d596721"],"weaknesses":[],"ingestedAt":"2026-10-29T20:05:26.763Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2022/49xxx/CVE-2022-49133.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-49133","state":"PUBLISHED","datePublished":"2025-02-26T01:55:07.722Z","dateUpdated":"2026-08-12T23:58:00.841Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-02-26T01:49:39.267Z"},"containers":{"cna":{"title":"drm/amdkfd: svm range restore work deadlock when process exit","descriptions":[{"lang":"en","value":"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 -> 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->mm 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"}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"8a7c184a16d73ab25360e0f5997f82306ff5d5a2","status":"affected","lessThan":"a6be83086e91891081e0589e4b4645bf4643e897","versionType":"git"},{"version":"8a7c184a16d73ab25360e0f5997f82306ff5d5a2","status":"affected","lessThan":"858822905f4bf44100d63c5e22e263109976f7cb","versionType":"git"},{"version":"8a7c184a16d73ab25360e0f5997f82306ff5d5a2","status":"affected","lessThan":"6225bb3a88d22594aacea2485dc28ca12d596721","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/amd/amdkfd/kfd_process.c","drivers/gpu/drm/amd/amdkfd/kfd_svm.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.14","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.14","versionType":"semver"},{"version":"5.16.20","status":"unaffected","lessThanOrEqual":"5.16.*","versionType":"semver"},{"version":"5.17.3","status":"unaffected","lessThanOrEqual":"5.17.*","versionType":"semver"},{"version":"5.18","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/amd/amdkfd/kfd_process.c","drivers/gpu/drm/amd/amdkfd/kfd_svm.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/a6be83086e91891081e0589e4b4645bf4643e897"},{"url":"https://git.kernel.org/stable/c/858822905f4bf44100d63c5e22e263109976f7cb"},{"url":"https://git.kernel.org/stable/c/6225bb3a88d22594aacea2485dc28ca12d596721"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-08-12T23:58:00.841Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.14","versionEndExcluding":"5.16.20"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.14","versionEndExcluding":"5.17.3"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.14","versionEndExcluding":"5.18"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}