{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2023-52461", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-02-20T12:30:33.294Z", "datePublished": "2024-02-23T14:46:22.280Z", "dateUpdated": "2026-08-05T09:10:05.263Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T09:10:05.263Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/sched: Fix bounds limiting when given a malformed entity\n\nIf we're given a malformed entity in drm_sched_entity_init()--shouldn't\nhappen, but we verify--with out-of-bounds priority value, we set it to an\nallowed value. Fix the expression which sets this limit." } ], "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 vulnerable path is reached only through local DRM device open/ioctl flows that call drm_sched_entity_init() (render-node context/submitqueue setup on /dev/dri/renderD*), not via network or adjacent-link protocols.\nAC:L - When a scheduler is created with fewer run-queues than the entity priority (including vendor/out-of-tree GPU drivers using num_rqs=1 with a non-MIN priority, or num_rqs=0 which drm_sched_init allows), the broken clamp deterministically indexes one past sched_rq[] with no race or attacker-uncontrollable condition.\nPR:L - Entity creation runs on DRM render nodes with DRM_RENDER_ALLOW ioctls and no capability check, so any unprivileged local user with GPU device access (typical on Android phones, desktops, and containers with /dev/dri) can reach the code.\nUI:N - The attacker opens the DRM device and creates a context/submit queue themselves; no victim interaction is required.\nS:U - Impact is kernel heap corruption and potential privilege escalation within the host kernel’s security authority, with no VM escape, IOMMU bypass, or other cross-boundary effect.\nC:H - The buggy clamp performs an out-of-bounds read of a struct drm_sched_rq * from past the kmalloc’d sched_rq array and stores it in entity->rq; reclaiming/grooming adjacent slab memory yields an arbitrary kernel read primitive through the corrupted run-queue pointer.\nI:H - Subsequent drm_sched_rq_add_entity/list and score updates write through the corrupted entity->rq (spin_lock, list_add_tail, atomic_inc of rq->sched->score), giving a heap-corruption write/control-flow hijack primitive once the adjacent pointer is attacker-influenced.\nA:H - Dereferencing the out-of-bounds or attacker-groomed rq pointer causes a kernel oops/panic, so availability is fully impacted even when the bug is not exploited for code execution." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/gpu/drm/scheduler/sched_entity.c" ], "versions": [ { "version": "56e449603f0ac580700621a356d35d5716a62ce5", "lessThan": "1470d173925d697b497656b93f7c5bddae2e64b2", "status": "affected", "versionType": "git" }, { "version": "56e449603f0ac580700621a356d35d5716a62ce5", "lessThan": "2bbe6ab2be53858507f11f99f856846d04765ae3", "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/scheduler/sched_entity.c" ], "versions": [ { "version": "6.7", "status": "affected" }, { "version": "0", "lessThan": "6.7", "status": "unaffected", "versionType": "semver" }, { "version": "6.7.2", "lessThanOrEqual": "6.7.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.8", "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": "6.7", "versionEndExcluding": "6.7.2" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.7", "versionEndExcluding": "6.8" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/1470d173925d697b497656b93f7c5bddae2e64b2" }, { "url": "https://git.kernel.org/stable/c/2bbe6ab2be53858507f11f99f856846d04765ae3" } ], "title": "drm/sched: Fix bounds limiting when given a malformed entity", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "problemTypes": [ { "descriptions": [ { "type": "CWE", "lang": "en", "description": "CWE-noinfo Not enough information" } ] } ], "metrics": [ { "cvssV3_1": { "scope": "UNCHANGED", "version": "3.1", "baseScore": 5.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "LOW" } }, { "other": { "type": "ssvc", "content": { "timestamp": "2024-02-23T22:33:47.670469Z", "id": "CVE-2023-52461", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-11-07T17:24:25.981Z" } }, { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T23:03:19.610Z" }, "title": "CVE Program Container", "references": [ { "url": "https://git.kernel.org/stable/c/1470d173925d697b497656b93f7c5bddae2e64b2", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/2bbe6ab2be53858507f11f99f856846d04765ae3", "tags": [ "x_transferred" ] } ] } ] } }