{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2024-56784", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-12-29T11:26:39.769Z", "datePublished": "2025-01-08T17:52:00.503Z", "dateUpdated": "2026-08-05T11:46:28.847Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:46:28.847Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: Adding array index check to prevent memory corruption\n\n[Why & How]\nArray indices out of bound caused memory corruption. Adding checks to\nensure that array index stays in bound." } ], "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 overflow is driven by a DRM atomic modeset/writeback commit on /dev/dri/card0, which requires local access to the GPU device node; there is no network or remote data path into the clk_mgr bandwidth notifier.\nAC:L - On affected DCN 3.5.1 hardware the out-of-bounds index is deterministic — the writeback connector's virtual link always sits four indices above the lowest DPIA link, yielding hr_index==2 on every commit — with no race, timing window, or memory-layout condition outside the attacker's control.\nPR:L - An unprivileged local user in a graphical session (holding DRM master via logind, or any user with access to the card node in a container/kiosk) can issue the atomic commit that reaches dcn35_notify_host_router_bw; no root or CAP_SYS_ADMIN is needed.\nUI:N - The attacker performs the DRM_IOCTL_MODE_ATOMIC call itself; no victim action such as plugging in a monitor or dock is required, since the offending virtual/writeback link is created unconditionally at driver init.\nS:U - The corruption is confined to the kernel's own stack within the amdgpu display driver; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - The out-of-bounds access is a read-modify-write that reads adjacent stack contents beyond the 2-element array, and clobbering saved pointers/registers in the frame is leverageable into a kernel memory disclosure primitive.\nI:H - This is an out-of-bounds stack write whose value (pixel-clock-derived bandwidth in kbps) is attacker-influenced through the committed display mode, allowing an arbitrary 32-bit addend to be applied to adjacent stack slots including saved registers and return-address region — a control-flow hijack primitive.\nA:H - Corrupting stack memory past host_router_bw_kbps[] reliably produces stack-protector panics, oopses, or hangs on every affected display commit, and the attacker can repeat it at will." } ] } ], "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/display/dc/clk_mgr/dcn35/dcn35_clk_mgr.c" ], "versions": [ { "version": "0057b36ac2be0f573048acda52e641e0502a9ff3", "lessThan": "dff526dc3e27f5484f5ba11471b9fbbe681467f2", "status": "affected", "versionType": "git" }, { "version": "0057b36ac2be0f573048acda52e641e0502a9ff3", "lessThan": "2c437d9a0b496168e1a1defd17b531f0a526dbe9", "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/display/dc/clk_mgr/dcn35/dcn35_clk_mgr.c" ], "versions": [ { "version": "6.11", "status": "affected" }, { "version": "0", "lessThan": "6.11", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.5", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.13", "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": "6.11", "versionEndExcluding": "6.12.5" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.11", "versionEndExcluding": "6.13" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/dff526dc3e27f5484f5ba11471b9fbbe681467f2" }, { "url": "https://git.kernel.org/stable/c/2c437d9a0b496168e1a1defd17b531f0a526dbe9" } ], "title": "drm/amd/display: Adding array index check to prevent memory corruption", "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-2024-56784", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "total" } ], "version": "2.0.3", "timestamp": "2025-10-01T19:56:12.168384Z" } } } ], "problemTypes": [ { "descriptions": [ { "lang": "en", "type": "CWE", "cweId": "CWE-787", "description": "CWE-787 Out-of-bounds Write" } ] } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-10-01T19:57:23.425Z" } } ] } }