{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2024-42117", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-07-29T15:50:41.178Z", "datePublished": "2024-07-30T07:46:09.648Z", "dateUpdated": "2026-08-05T11:35:46.481Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:35:46.481Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: ASSERT when failing to find index by plane/stream id\n\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\n[HOW]\nWhen this happens, call ASSERT(), and return a positive number (which is\nfewer than callers' array size) instead.\n\nThis fixes 4 OVERRUN and 2 NEGATIVE_RETURNS issues reported by Coverity." } ], "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 vulnerable code is in the amdgpu DC display pipeline mapper, reached only through local DRM ioctls (`DRM_IOCTL_MODE_ATOMIC`, `SETPLANE`, `PAGE_FLIP`) on `/dev/dri/card*`. 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 — 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[]` — 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" } } ] } }