CVE-2024-42117

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There is no network or adjacent-network path to `dml2_map_dc_pipes()`.\nAC:L - There is no race, no timing window, and no memory-layout condition outside the attacker's control \u2014 the attacker directly supplies the stream/plane/ODM configuration in the atomic commit that desynchronizes the 6-entry `disp_cfg_to_*_id` mapping table, and the failed lookup then deterministically yields `0xFFFFFFFF` as an array index.\nPR:L - The path requires only DRM master on the card node, which systemd-logind grants to the ordinary unprivileged user owning the active graphical session; no root, no CAP_SYS_ADMIN, and no capability in the init namespace is needed.\nUI:N - The attacker performs the atomic modeset/plane commit themselves from their own process; no victim action, no filesystem mount, and no file open by another user is involved.\nS:U - The out-of-bounds read and the resulting stack corruption stay within the kernel's own memory and the amdgpu driver's security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - `ODMMode[0xFFFFFFFF]` and `DPPPerSurface[0xFFFFFFFF]` read roughly 16 GB beyond the display-config arrays, an entirely unbounded out-of-bounds read whose value is then propagated into driver state and observable pipe/ODM behavior, giving disclosure of arbitrary kernel memory contents.\nI:H - The OOB-read value becomes `mpc_factor`, which bounds the write loop `pipe_pool->pipes_assigned_to_plane[odm_slice][mpc_slice] = pipes[next_pipe_to_assign++]` over a `int[4][4]` field of a stack-allocated `struct dc_pipe_mapping_scratch`, producing an out-of-bounds kernel stack write and a subsequent OOB index into `res_ctx.pipe_ctx[]` \u2014 corruption of that class is exploitable for control-flow hijacking.\nA:H - The ~16 GB-offset dereference lands in unmapped kernel address space in the common case, causing an immediate oops, and the follow-on stack overflow reliably panics the machine; the affected code runs during every display commit, so the crash is trivially repeatable."}]}], "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/dml2/dml2_dc_resource_mgmt.c"], "versions": [{"version": "7966f319c66d9468623c6a6a017ecbc0dd79be75", "lessThan": "a9c047a5cf3135b8b66bd28fbe2c698b9cace0b3", "status": "affected", "versionType": "git"}, {"version": "7966f319c66d9468623c6a6a017ecbc0dd79be75", "lessThan": "01eb50e53c1ce505bf449348d433181310288765", "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/dml2/dml2_dc_resource_mgmt.c"], "versions": [{"version": "6.7", "status": "affected"}, {"version": "0", "lessThan": "6.7", "status": "unaffected", "versionType": "semver"}, {"version": "6.9.9", "lessThanOrEqual": "6.9.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.10", "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": "6.9.9"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.7", "versionEndExcluding": "6.10"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/a9c047a5cf3135b8b66bd28fbe2c698b9cace0b3"}, {"url": "https://git.kernel.org/stable/c/01eb50e53c1ce505bf449348d433181310288765"}], "title": "drm/amd/display: ASSERT when failing to find index by plane/stream id", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T04:54:32.225Z"}, "title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/a9c047a5cf3135b8b66bd28fbe2c698b9cace0b3", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/01eb50e53c1ce505bf449348d433181310288765", "tags": ["x_transferred"]}]}, {"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2024-42117", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-09-10T16:17:10.514634Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-11T17:33:05.771Z"}}]}}

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{"bugzilla": {"description": "kernel: drm/amd/display: ASSERT when failing to find index by plane/stream id", "id": "2301482", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2301482"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.2", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:H", "status": "draft"}, "cwe": "CWE-125", "details": ["In the Linux kernel, the following vulnerability has been resolved:\ndrm/amd/display: ASSERT when failing to find index by plane/stream id\n[WHY]\nfind_disp_cfg_idx_by_plane_id and find_disp_cfg_idx_by_stream_id returns\nan array index and they return -1 when not found; however, -1 is not a\nvalid index number.\n[HOW]\nWhen this happens, call ASSERT(), and return a positive number (which is\nfewer than callers' array size) instead.\nThis fixes 4 OVERRUN and 2 NEGATIVE_RETURNS issues reported by Coverity."], "name": "CVE-2024-42117", "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": "2024-07-30T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-42117\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-42117\nhttps://lore.kernel.org/linux-cve-announce/2024073023-CVE-2024-42117-25fd@gregkh/T"], "threat_severity": "Moderate"}

{"created": "2025-07-12T22:44:45.786437+00:00", "updated": "2025-07-12T22:44:45.786503+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}