{"id":"CVE-2026-68237","summary":"drm/amdgpu/userq: fix indefinite fence wait during GPU reset","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu/userq: fix indefinite fence wait during GPU reset\n\npre_reset only force-completes fences of MAPPED queues. A queue in any\nother state (e.g. mid-eviction) keeps its last_fence pending; after a\nGPU reset that fence never signals, so the eviction/suspend worker and\nprocess teardown (amdgpu_evf_mgr_flush_suspend) wait on it forever and\nwedge the machine:\n\n  INFO: task kworker/6:28 blocked for more than 120 seconds.\n  Workqueue: events amdgpu_eviction_fence_suspend_worker [amdgpu]\n  Call Trace:\n   dma_fence_wait_timeout+0x7e/0x130\n   amdgpu_userq_evict+0x67/0x140 [amdgpu]\n   amdgpu_eviction_fence_suspend_worker+0xd8/0x160 [amdgpu]\n   process_scheduled_works+0xa6/0x420\n\nForce-complete every queue's fence regardless of state. The unmap and\nmark-hung step stays gated on MAPPED, since unmapping a queue that is\nnot mapped is invalid.\n\n(cherry picked from commit 9102b39fa924dcc3dc75a3137bfa9633c40b88c0)","modified":"2026-08-12T04:19:22.140836618Z","published":"2026-08-10T12:01:02.144Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68237.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/3085ae8695e025b39d208f288c6265edc75abbe8"},{"type":"WEB","url":"https://git.kernel.org/stable/c/5d75ec2e5f1736c2f10c7d6f4565bf1bf29f29a7"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68237.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-68237"},{"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":"290f46cf5726509f55fac4c7abe9b9d311aa5a3a"},{"fixed":"3085ae8695e025b39d208f288c6265edc75abbe8"},{"fixed":"5d75ec2e5f1736c2f10c7d6f4565bf1bf29f29a7"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-68237.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.1.6"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-68237.json"}}],"schema_version":"1.9.0"}