CVE-2023-52461

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no victim interaction is required.\nS:U - Impact is kernel heap corruption and potential privilege escalation within the host kernel\u2019s 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\u2019d 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"]}]}]}}

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{"bugzilla": {"description": "kernel: drm/sched: Fix bounds limiting when given a malformed entity", "id": "2265796", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2265796"}, "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:H/A:N", "status": "draft"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\ndrm/sched: Fix bounds limiting when given a malformed entity\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."], "mitigation": {"lang": "en:us", "value": "No mitigation is currently available for this vulnerability. Make sure to perform the updates as they become available."}, "name": "CVE-2023-52461", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-02-23T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2023-52461\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-52461\nhttps://lore.kernel.org/linux-cve-announce/2024022334-CVE-2023-52461-a619@gregkh/T/#u"], "threat_severity": "Low"}

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