CVE-2022-50354

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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"}}]}}

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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"}], "id": "CVE-2022-50354", "lastModified": "2026-08-04T10:18:12.347", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2022-50354", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-01-14T18:31:35.341027Z", "version": "2.0.3"}}]}, "published": "2025-09-17T15:15:34.037", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/29d48b87db64b6697ddad007548e51d032081c59"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/9d74d1f52e16d8e07f7fbe52e96d6391418a2fe9"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/b6e78bd3bf2eb964c95eb2596d3cd367307a20b5"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-476"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-476"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"bugzilla": {"description": "kernel: drm/amdkfd: Fix kfd_process_device_init_vm error handling", "id": "2396109", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2396109"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "details": ["No description is available for this CVE."], "name": "CVE-2022-50354", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-09-17T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2022-50354\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-50354\nhttps://lore.kernel.org/linux-cve-announce/2025091714-CVE-2022-50354-45cc@gregkh/T"], "threat_severity": "Low"}

{"created": "2025-09-18T12:41:33.605859+00:00", "updated": "2025-09-18T12:41:33.605911+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}