{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2022-50417", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-09-17T14:53:07.003Z", "datePublished": "2025-09-18T16:04:00.512Z", "dateUpdated": "2026-08-05T08:58:42.522Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T08:58:42.522Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/panfrost: Fix GEM handle creation ref-counting\n\npanfrost_gem_create_with_handle() previously returned a BO but with the\nonly reference being from the handle, which user space could in theory\nguess and release, causing a use-after-free. Additionally if the call to\npanfrost_gem_mapping_get() in panfrost_ioctl_create_bo() failed then\na(nother) reference on the BO was dropped.\n\nThe _create_with_handle() is a problematic pattern, so ditch it and\ninstead create the handle in panfrost_ioctl_create_bo(). If the call to\npanfrost_gem_mapping_get() fails then this means that user space has\nindeed gone behind our back and freed the handle. In which case just\nreturn an error code." } ], "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 - The bug is reached only via local DRM ioctls on the Panfrost render node (/dev/dri/renderD*): DRM_IOCTL_PANFROST_CREATE_BO and concurrent DRM_IOCTL_GEM_CLOSE. It is not reachable from network packet processing or adjacent-network protocols.\nAC:L - The attacker controls both sides of the race by issuing CREATE_BO on one thread while closing the predictable sequential IDR handle from another; GEM handles allocate from 1 upward so the next handle is trivial to guess. No conditions outside the attacker’s influence are required.\nPR:L - CREATE_BO is marked DRM_RENDER_ALLOW and needs only an open render-node FD, which unprivileged users routinely have on Mali devices (Android phones, ARM SBCs). No CAP_SYS_ADMIN or init-namespace root is required.\nUI:N - The attacker triggers the UAF entirely with their own ioctls; no other user action such as mounting a filesystem or opening a malicious file is needed.\nS:U - This is a kernel heap use-after-free enabling privilege escalation within the same OS security authority. It does not cross a VM, IOMMU isolation, or other Changed-scope boundary.\nC:H - The dangling panfrost_gem_object pointer after GEM_CLOSE is a classic use-after-free; reclaiming the freed object via heap spray can yield arbitrary kernel memory reads.\nI:H - The same UAF/refcount corruption allows reallocation of the freed GEM object and adjacent structures, enabling arbitrary kernel writes and control-flow hijacking.\nA:H - Use of the freed BO (e.g., locking bo->mappings.lock in panfrost_gem_mapping_get) or the erroneous extra drm_gem_object_put causes kernel oops/panic, so availability impact is High." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/gpu/drm/panfrost/panfrost_drv.c", "drivers/gpu/drm/panfrost/panfrost_gem.c", "drivers/gpu/drm/panfrost/panfrost_gem.h" ], "versions": [ { "version": "f3ba91228e8e917e5bd6c4b72bfe846933d17370", "lessThan": "0b70f6ea4d4f2b4d4b291d86ab76b4d07394932c", "status": "affected", "versionType": "git" }, { "version": "f3ba91228e8e917e5bd6c4b72bfe846933d17370", "lessThan": "4f1105ee72d8c7c35d90e3491b31b2d9d6b7e33a", "status": "affected", "versionType": "git" }, { "version": "f3ba91228e8e917e5bd6c4b72bfe846933d17370", "lessThan": "3f9feffa8a5ab08b4e298a27b1aa7204a7d42ca2", "status": "affected", "versionType": "git" }, { "version": "f3ba91228e8e917e5bd6c4b72bfe846933d17370", "lessThan": "ba3d2c2380e7129b525a787489c0b7e819a3b898", "status": "affected", "versionType": "git" }, { "version": "f3ba91228e8e917e5bd6c4b72bfe846933d17370", "lessThan": "4217c6ac817451d5116687f3cc6286220dc43d49", "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/panfrost/panfrost_drv.c", "drivers/gpu/drm/panfrost/panfrost_gem.c", "drivers/gpu/drm/panfrost/panfrost_gem.h" ], "versions": [ { "version": "5.2", "status": "affected" }, { "version": "0", "lessThan": "5.2", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.163", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.87", "lessThanOrEqual": "5.15.*", "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": "5.2", "versionEndExcluding": "5.10.163" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.2", "versionEndExcluding": "5.15.87" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.2", "versionEndExcluding": "6.0.19" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.2", "versionEndExcluding": "6.1.5" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.2", "versionEndExcluding": "6.2" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/0b70f6ea4d4f2b4d4b291d86ab76b4d07394932c" }, { "url": "https://git.kernel.org/stable/c/4f1105ee72d8c7c35d90e3491b31b2d9d6b7e33a" }, { "url": "https://git.kernel.org/stable/c/3f9feffa8a5ab08b4e298a27b1aa7204a7d42ca2" }, { "url": "https://git.kernel.org/stable/c/ba3d2c2380e7129b525a787489c0b7e819a3b898" }, { "url": "https://git.kernel.org/stable/c/4217c6ac817451d5116687f3cc6286220dc43d49" } ], "title": "drm/panfrost: Fix GEM handle creation ref-counting", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "metrics": [ { "cvssV3_1": { "scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH" } }, { "other": { "type": "ssvc", "content": { "id": "CVE-2022-50417", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "total" } ], "version": "2.0.3", "timestamp": "2026-01-14T19:10:45.262200Z" } } } ], "problemTypes": [ { "descriptions": [ { "lang": "en", "type": "CWE", "cweId": "CWE-416", "description": "CWE-416 Use After Free" } ] } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-01-14T19:13:09.937Z" } } ] } }