CVE-2024-46817

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Should abort amdgpu_dm\ninitialize.\n\n[How]\nReturn failure to amdgpu_dm_init."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.4, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:L - The vulnerable code is `amdgpu_dm_initialize_drm_device()`, reached only via `dm_hw_init()` during amdgpu device probe on the local machine (boot, `modprobe amdgpu`, PCI rescan, or eGPU attach); no network, adjacent-network, or remote-peer data reaches it, and the resulting corrupted plane capabilities are read back through local DRM ioctls on `/dev/dri/card*`.\nAC:H - The overrun only occurs if `dc->caps.max_streams` exceeds 6, and that value is `min(res_pool->pipe_count, res_pool->stream_enc_count)` derived from compile-time per-ASIC `struct resource_caps` tables whose maximum `num_timing_generator` is 6, with hardware pipe fuses only ever decrementing it. Whether the machine contains an ASIC reporting more than six streams is entirely a property of the installed silicon and wholly outside any attacker's influence.\nPR:N - No capability check, credential test, or access-control gate exists anywhere on the path \u2014 `amdgpu_dm_initialize_drm_device()` runs unconditionally as part of the IP-block hardware init during device probe. On a system with qualifying hardware the out-of-bounds accesses occur automatically at boot before any account exists, so the attacker needs no privileges at all.\nUI:N - The amdgpu display manager initializes automatically when the PCI device is probed at boot; no victim must open a file, mount anything, or take any other action.\nS:U - The out-of-bounds read and write both stay inside kernel memory (`struct dc_caps` and `struct amdgpu_device`) and are handled entirely by the kernel's own security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - Reading `dc->caps.planes[i]` past index 5 pulls adjacent `struct dc_caps` bytes (`color`, `dmub_caps`, and following fields) and misinterprets them as a `struct dc_plane_cap`, from which `amdgpu_dm_plane_init()` derives the advertised pixel formats, DRM format modifiers, and upscale/downscale limits that any local user holding a DRM fd can read back via `DRM_IOCTL_MODE_GETPLANE` and the `IN_FORMATS` blob. The accompanying heap-pointer overwrite of `struct amdgpu_device` is memory corruption that can be leveraged for further disclosure.\nI:H - `initialize_plane()` writes a freshly kzalloc'd `struct drm_plane *` past the end of `mode_info->planes[6]`, corrupting the adjacent `afmt[9]` pointer array and DRM property pointers inside `struct amdgpu_device`; the subsequent `amdgpu_dm_crtc_init(dm, mode_info->planes[i], i)` reads those slots back out of bounds and passes type-confused pointers to `drm_crtc_init_with_planes()`. An out-of-bounds pointer write combined with type confusion is a control-flow-relevant corruption primitive.\nA:H - The pre-fix `ASSERT()` expands to `WARN_ON_ONCE()`, which panics outright on the many builds running `panic_on_warn=1`, and execution then continues into the out-of-bounds accesses that corrupt `struct amdgpu_device` and dereference type-confused pointers during display init, crashing the kernel or leaving the machine unbootable/headless."}]}], "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/amdgpu_dm/amdgpu_dm.c"], "versions": [{"version": "4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c", "lessThan": "d619b91d3c4af60ac422f1763ce53d721fb91262", "status": "affected", "versionType": "git"}, {"version": "4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c", "lessThan": "754321ed63f0a4a31252ca72e0bd89a9e1888018", "status": "affected", 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Should abort amdgpu_dm\ninitialize.\n\n[How]\nReturn failure to amdgpu_dm_init."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: drm/amd/display: Detener la inicializaci\u00f3n de amdgpu_dm cuando el n\u00famero de secuencias es mayor que 6 [Por qu\u00e9] Coverity informa una advertencia de OVERRUN. Deber\u00eda abortar la inicializaci\u00f3n de amdgpu_dm. [C\u00f3mo] Devolver el error a amdgpu_dm_init."}], "id": "CVE-2024-46817", "lastModified": "2026-08-04T11:20:29.690", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.4, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.4, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2024-46817", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-09-29T14:15:16.825068Z", "version": "2.0.3"}}]}, "published": "2024-09-27T13:15:14.493", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/21bbb39863f10f5fb4bf772d15b07d5d13590e9d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/28b515c458aa9c92bfcb99884c94713a5f471cea"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/754321ed63f0a4a31252ca72e0bd89a9e1888018"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/84723eb6068c50610c5c0893980d230d7afa2105"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/94cb77700fa4ae6200486bfa0ba2ac547534afd2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d398c74c881dee695f6eb6138c9891644e1c3d9d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d619b91d3c4af60ac422f1763ce53d721fb91262"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.debian.org/debian-lts-announce/2024/10/msg00003.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: drm/amd/display: Stop amdgpu_dm initialize when stream nums greater than 6", "id": "2315169", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2315169"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.4", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-129", "details": ["In the Linux kernel, the following vulnerability has been resolved:\ndrm/amd/display: Stop amdgpu_dm initialize when stream nums greater than 6\n[Why]\nCoverity reports OVERRUN warning. Should abort amdgpu_dm\ninitialize.\n[How]\nReturn failure to amdgpu_dm_init."], "name": "CVE-2024-46817", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "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": "2024-09-27T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-46817\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-46817\nhttps://lore.kernel.org/linux-cve-announce/2024092712-CVE-2024-46817-7a2c@gregkh/T"], "threat_severity": "Low"}

{}