{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2022-50354", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-09-17T14:53:06.993Z", "datePublished": "2025-09-17T14:56:07.596Z", "dateUpdated": "2026-08-05T08:58:20.719Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T08:58:20.719Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdkfd: Fix kfd_process_device_init_vm error handling\n\nShould only destroy the ib_mem and let process cleanup worker to free\nthe outstanding BOs. Reset the pointer in pdd->qpd structure, to avoid\nNULL pointer access in process destroy worker.\n\n BUG: kernel NULL pointer dereference, address: 0000000000000010\n Call Trace:\n amdgpu_amdkfd_gpuvm_unmap_gtt_bo_from_kernel+0x46/0xb0 [amdgpu]\n kfd_process_device_destroy_cwsr_dgpu+0x40/0x70 [amdgpu]\n kfd_process_destroy_pdds+0x71/0x190 [amdgpu]\n kfd_process_wq_release+0x2a2/0x3b0 [amdgpu]\n process_one_work+0x2a1/0x600\n worker_thread+0x39/0x3d0" } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:L - Triggered through local /dev/kfd ioctls (AMDKFD_IOC_ACQUIRE_VM) and process teardown; the amdkfd path is not reachable from the network stack or remote protocols.\nAC:L - An unprivileged local attacker can reliably force the partial-init failure (e.g., memory pressure so the PAGE_SIZE IB alloc succeeds but the 2-page CWSR alloc fails) then exit to hit the dangling-pointer cleanup path; no conditions outside attacker control are required.\nPR:L - /dev/kfd and the DRM render node are accessible to unprivileged users in the render group or via uaccess; acquire_vm has no capability check (unlike CRIU), so only a normal local GPU user is required.\nUI:N - The attacker opens /dev/kfd and the render node, issues the ioctl, and exits their own process; no separate victim action is needed.\nS:U - Impact is confined to the local kernel/OS trust domain (oops or memory corruption in amdkfd cleanup); this is not a guest-to-host, IOMMU, or other cross-authority escape.\nC:H - Improper cleanup leaves qpd pointers to kgd_mem/BO objects that can already have been freed via DRM file teardown, which is a use-after-free; with heap reclaim that yields an arbitrary read primitive beyond a pure crash.\nI:H - The same dangling kgd_mem is passed into unmap/free paths in the destroy worker, so a reclaimed object can turn the UAF into an arbitrary write / control-flow hijack, not only a NULL deref.\nA:H - The reported bug is a kernel NULL pointer dereference in kfd_process_wq_release leading to an oops/panic, which is a full availability loss; UAF paths similarly crash the kernel." } ] } ], "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_process.c" ], "versions": [ { "version": "68df0f195a689bbb0f92bfeadee6edd90c79c31f", "lessThan": "b6e78bd3bf2eb964c95eb2596d3cd367307a20b5", "status": "affected", "versionType": "git" }, { "version": "68df0f195a689bbb0f92bfeadee6edd90c79c31f", "lessThan": "9d74d1f52e16d8e07f7fbe52e96d6391418a2fe9", "status": "affected", "versionType": "git" }, { "version": "68df0f195a689bbb0f92bfeadee6edd90c79c31f", "lessThan": "29d48b87db64b6697ddad007548e51d032081c59", "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_process.c" ], "versions": [ { "version": "5.16", "status": "affected" }, { "version": "0", "lessThan": "5.16", "status": "unaffected", "versionType": "semver" }, { "version": "6.0.19", "lessThanOrEqual": "6.0.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.5", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.2", "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": "5.16", "versionEndExcluding": "6.0.19" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.16", "versionEndExcluding": "6.1.5" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.16", "versionEndExcluding": "6.2" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/b6e78bd3bf2eb964c95eb2596d3cd367307a20b5" }, { "url": "https://git.kernel.org/stable/c/9d74d1f52e16d8e07f7fbe52e96d6391418a2fe9" }, { "url": "https://git.kernel.org/stable/c/29d48b87db64b6697ddad007548e51d032081c59" } ], "title": "drm/amdkfd: Fix kfd_process_device_init_vm error handling", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "metrics": [ { "cvssV3_1": { "scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE" } }, { "other": { "type": "ssvc", "content": { "id": "CVE-2022-50354", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "version": "2.0.3", "timestamp": "2026-01-14T18:31:35.341027Z" } } } ], "problemTypes": [ { "descriptions": [ { "lang": "en", "type": "CWE", "cweId": "CWE-476", "description": "CWE-476 NULL Pointer Dereference" } ] } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-01-14T18:33:00.816Z" } } ] } }