{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2024-46811", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-09-11T15:12:18.283Z", "datePublished": "2024-09-27T12:35:54.445Z", "dateUpdated": "2026-08-05T11:38:42.789Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:38:42.789Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: Fix index may exceed array range within fpu_update_bw_bounding_box\n\n[Why]\nCoverity reports OVERRUN warning. soc.num_states could\nbe 40. But array range of bw_params->clk_table.entries is 8.\n\n[How]\nAssert if soc.num_states greater than 8." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H", "baseScore": 7.3, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:L - The vulnerable code is reached only through amdgpu DC initialization paths on the local machine — `dc_construct()`, `dcn32_init_hw()`, and `get_memclk_states_from_smu()` during hardware init and suspend/resume. There is no network, adjacent-network, or physical-device vector.\nAC:L - On affected hardware the overrun happens deterministically whenever the firmware-reported DPM level count plus the hardcoded DCFCLK STA targets exceeds 8 — no race to win, no memory layout to groom, and no unlikely precondition. The vulnerable path in dcn302/dcn303 is entirely ungated.\nPR:L - The trigger points (DC hardware init and resume of the DRM device) are reachable in an ordinary unprivileged desktop session via logind-mediated suspend/resume of the GPU, without root in the init namespace. No pre-authentication or remote path exists, so PR:N is not supportable.\nUI:N - The bounding-box update runs automatically during driver hardware init and resume; no victim action such as opening a file or plugging in a display is required.\nS:U - The out-of-bounds read and the resulting corrupted DML bounding box are both entirely within the kernel's own security authority — there is no VM, IOMMU, or sandbox boundary crossed.\nC:H - With `num_states` able to reach `DC__VOLTAGE_STATES` (40) against an 8-element `entries[]`, the read runs up to ~1.3 KB past the end of the `struct clk_bw_params` allocation into adjacent slab memory — far beyond a \"few bytes\" bounded read. Those bytes are copied into `dml.soc.clock_limits[]`, which feeds userspace-observable clock and mode-validation state.\nI:L - There is no out-of-bounds write — `clock_limits[]` is 40 entries and the index is bounded by that — but attacker-uncontrolled garbage from adjacent memory is written into the DML soc bounding box and then used to program dispclk/dppclk/dcfclk/socclk, corrupting kernel state that drives real display hardware.\nA:H - Reading past the end of the heap-allocated `clk_bw_params` can fault or oops and reliably trips KASAN, and feeding nonsensical clock/voltage limits into DML can hang or blank the display pipeline. Any such kernel crash or hang 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/amd/display/dc/dml/dcn302/dcn302_fpu.c", "drivers/gpu/drm/amd/display/dc/dml/dcn303/dcn303_fpu.c", "drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c", "drivers/gpu/drm/amd/display/dc/dml/dcn321/dcn321_fpu.c" ], "versions": [ { "version": "4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c", "lessThan": "4003bac784380fed1f94f197350567eaa73a409d", "status": "affected", "versionType": "git" }, { "version": "4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c", "lessThan": "aba188d6f4ebaf52acf13f204db2bd2c22072504", "status": "affected", "versionType": "git" }, { "version": "4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c", "lessThan": "188fd1616ec43033cedbe343b6579e9921e2d898", "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/dml/dcn302/dcn302_fpu.c", "drivers/gpu/drm/amd/display/dc/dml/dcn303/dcn303_fpu.c", "drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c", "drivers/gpu/drm/amd/display/dc/dml/dcn321/dcn321_fpu.c" ], "versions": [ { "version": "4.15", "status": "affected" }, { "version": "0", "lessThan": "4.15", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.50", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.10.9", "lessThanOrEqual": "6.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.11", "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": "4.15", "versionEndExcluding": "6.6.50" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.15", "versionEndExcluding": "6.10.9" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.15", "versionEndExcluding": "6.11" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/4003bac784380fed1f94f197350567eaa73a409d" }, { "url": "https://git.kernel.org/stable/c/aba188d6f4ebaf52acf13f204db2bd2c22072504" }, { "url": "https://git.kernel.org/stable/c/188fd1616ec43033cedbe343b6579e9921e2d898" } ], "title": "drm/amd/display: Fix index may exceed array range within fpu_update_bw_bounding_box", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2024-09-29T14:19:04.715171Z", "id": "CVE-2024-46811", "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": "2024-09-29T14:19:16.904Z" } } ] } }