{"id":"CVE-2026-89812","summary":"drm/amdgpu: force complete the MES ring fences on reset","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu: force complete the MES ring fences on reset\n\nThe MES scheduler ring has no drm scheduler (no_scheduler = true), so it is\nskipped by the force-completion loop in amdgpu_device_pre_asic_reset(). It uses\na polling fence whose hw value lives in wb (GTT) memory and survives a MODE1\nreset, while fence_drv.sync_seq keeps advancing for every packet.\n\nWhen the reset is triggered because MES itself stopped responding, the\ntimed-out packets advance sync_seq past the last hw fence value MES wrote.\nAfter resume the first MES submission polls forever on a seq that is never\nwritten back, failing the resume and wedging the box on a second reset:\n\n  amdgpu: MES ring buffer is full.\n  amdgpu: *ERROR* ring gfx_0.0.0 test failed (-110)\n  amdgpu: resume of IP block \u003cgfx_v11_0\u003e failed -110\n  amdgpu: GPU reset end with ret = -110\n\nForce complete the MES scheduler ring fences together with the scheduler rings\nso their hw fence is realigned to sync_seq.\n\nv2: cover all XCCs (one scheduler ring each), not just mes.ring[0].","modified":"2026-09-18T03:48:32.901383614Z","published":"2026-09-16T10:30:45.246Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89812.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/48dc279c3010ac8f91b1845b2abb3a1e9943a0f5"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ebe7542553d008e2285e0fbba0c63f0295a7e694"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89812.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89812"},{"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":"34e087e8920e635c62e2ed6a758b0cd27f836d13"},{"fixed":"ebe7542553d008e2285e0fbba0c63f0295a7e694"},{"fixed":"48dc279c3010ac8f91b1845b2abb3a1e9943a0f5"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-89812.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.12.0"},{"fixed":"7.2.5"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-89812.json"}}],"schema_version":"1.9.0"}