{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-80870","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-08-26T14:34:25.798Z","datePublished":"2026-09-04T16:48:31.902Z","dateUpdated":"2026-09-04T16:48:31.902Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-09-04T16:48:31.902Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdkfd: Validate CRIU-restored IDs before idr_alloc\n\nThe KFD CRIU restore flow restores previously saved object IDs from\nuserspace.\n\nFor event restore:\n\n  kfd_criu_restore_event()\n      -> create_signal_event() / create_other_event()\n          -> allocate_event_notification_slot()\n              -> idr_alloc(..., *restore_id, *restore_id + 1, ...)\n\nFor BO restore:\n\n  criu_restore_memory_of_gpu()\n      -> idr_alloc(..., bo_priv->idr_handle, ...)\n\nIn both cases, the restored ID comes from userspace-provided CRIU data.\n\nidr_alloc() expects the ID range values to fit within signed int\nlimits. If a restored ID is larger than INT_MAX, it can trigger a WARN\nin the IDR layer.\n\nA kernel WARN is undesirable because it prints a warning trace and may\ncause a panic or reboot on systems with panic_on_warn enabled.\n\nSmatch reported these paths as allowing unchecked userspace values to\nreach idr_alloc().\n\nAdd INT_MAX validation before using restored IDs in:\n\n- kfd_criu_restore_event()\n- criu_restore_memory_of_gpu()\n\nIf the restored ID is invalid, return -EINVAL.\n\nThis prevents invalid restore data from reaching the IDR layer and\navoids WARN-triggering paths, while keeping valid restore behavior\nunchanged."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/amd/amdkfd/kfd_chardev.c","drivers/gpu/drm/amd/amdkfd/kfd_events.c"],"versions":[{"version":"40e8a766a761f7fdc8530347527b344fddf6f1a8","lessThan":"f8687018f24037056692c1e93c7d96cc72889d5b","status":"affected","versionType":"git"},{"version":"40e8a766a761f7fdc8530347527b344fddf6f1a8","lessThan":"89a75e3349c4fae28cbedc711bc924cbc6293da2","status":"affected","versionType":"git"},{"version":"40e8a766a761f7fdc8530347527b344fddf6f1a8","lessThan":"085ea93bda71fee600cc12a17026598eb10dd1f9","status":"affected","versionType":"git"},{"version":"40e8a766a761f7fdc8530347527b344fddf6f1a8","lessThan":"543ed0f61d56501cc585162da600bbedd7c08c0f","status":"affected","versionType":"git"},{"version":"40e8a766a761f7fdc8530347527b344fddf6f1a8","lessThan":"cb6311f25a096621ac7ffd91b50d1bb1cfb63a96","status":"affected","versionType":"git"},{"version":"40e8a766a761f7fdc8530347527b344fddf6f1a8","lessThan":"85043dd49c2f51a37b22618168e3ae59ab92f0d6","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/amd/amdkfd/kfd_chardev.c","drivers/gpu/drm/amd/amdkfd/kfd_events.c"],"versions":[{"version":"5.18","status":"affected"},{"version":"0","lessThan":"5.18","status":"unaffected","versionType":"semver"},{"version":"6.1.178","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.145","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.97","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.40","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.1.5","lessThanOrEqual":"7.1.*","status":"unaffected","versionType":"semver"},{"version":"7.2","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.18","versionEndExcluding":"6.1.178"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.18","versionEndExcluding":"6.6.145"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.18","versionEndExcluding":"6.12.97"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.18","versionEndExcluding":"6.18.40"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.18","versionEndExcluding":"7.1.5"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.18","versionEndExcluding":"7.2"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/f8687018f24037056692c1e93c7d96cc72889d5b"},{"url":"https://git.kernel.org/stable/c/89a75e3349c4fae28cbedc711bc924cbc6293da2"},{"url":"https://git.kernel.org/stable/c/085ea93bda71fee600cc12a17026598eb10dd1f9"},{"url":"https://git.kernel.org/stable/c/543ed0f61d56501cc585162da600bbedd7c08c0f"},{"url":"https://git.kernel.org/stable/c/cb6311f25a096621ac7ffd91b50d1bb1cfb63a96"},{"url":"https://git.kernel.org/stable/c/85043dd49c2f51a37b22618168e3ae59ab92f0d6"}],"title":"drm/amdkfd: Validate CRIU-restored IDs before idr_alloc","x_generator":{"engine":"bippy-1.2.0"}}}}