{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2024-42064", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-07-29T15:50:41.166Z", "datePublished": "2024-07-29T15:52:29.350Z", "dateUpdated": "2026-08-05T11:35:23.922Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:35:23.922Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: Skip pipe if the pipe idx not set properly\n\n[why]\nDriver crashes when pipe idx not set properly\n\n[how]\nAdd code to skip the pipe that idx not set properly" } ], "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 reached through the DRM atomic modeset/commit path (`DRM_IOCTL_MODE_ATOMIC` → `amdgpu_dm_atomic_commit_tail` → `dc_commit_streams` → `dml2_validate`) on a local `/dev/dri/card*` device node. There is no network or remote-peer input involved in display pipe mapping.\nAC:L - No race, timing window, or unknowable memory layout is required — the attacker can repeatedly issue atomic commits with varied stream/plane/ODM/MST configurations until a DC pipe has no corresponding DML mapping entry, and the resulting `0xFFFFFFFF` index is dereferenced unconditionally.\nPR:L - An unprivileged local user with access to the DRM primary node (the standard case for a logged-in console/desktop user via logind ACLs, or the first opener on a system with no running display server) can become DRM master and drive modesets. No root or real capability in the initial namespace is needed.\nUI:N - The attacker's own process performs the atomic modeset/plane update that triggers the faulty pipe lookup; no action by any other user is required.\nS:U - The out-of-bounds accesses and the resulting crash or data disclosure are confined to the kernel's own security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - `dml_get_*(mode_lib, 0xFFFFFFFF)` performs a wild read roughly 4–16 GiB past the `kzalloc`'d `dml2_context`, and the value fetched is used as a second unbounded array index — an entirely unconstrained out-of-bounds read whose results propagate into `pipe_ctx` DLG/RQ/TTU state, so kernel memory contents can be disclosed rather than being a small bounded read.\nI:H - Data read from arbitrary out-of-bounds kernel addresses is written back into kernel-managed display state (`pipe_dlg_param`, `det_buffer_size_kb`, DCHUB RQ/DLG/TTU register images) and programmed into the display hardware, corrupting kernel and device state with attacker-uninfluenced arbitrary values.\nA:H - The dereference of index `0xFFFFFFFF` almost always faults on an unmapped address, producing a kernel oops inside the atomic commit tail while DC/DRM locks are held — crashing the task, wedging the display subsystem, and commonly taking down the machine." } ] } ], "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_utils.c" ], "versions": [ { "version": "7966f319c66d9468623c6a6a017ecbc0dd79be75", "lessThan": "27df59c6071470efce7182ee92fbb16afba551e0", "status": "affected", "versionType": "git" }, { "version": "7966f319c66d9468623c6a6a017ecbc0dd79be75", "lessThan": "af114efe8d24b5711cfbedf7180f2ac1a296c24b", "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_utils.c" ], "versions": [ { "version": "6.7", "status": "affected" }, { "version": "0", "lessThan": "6.7", "status": "unaffected", "versionType": "semver" }, { "version": "6.9.8", "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": "6.9.8" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.7", "versionEndExcluding": "6.10" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/27df59c6071470efce7182ee92fbb16afba551e0" }, { "url": "https://git.kernel.org/stable/c/af114efe8d24b5711cfbedf7180f2ac1a296c24b" } ], "title": "drm/amd/display: Skip pipe if the pipe idx not set properly", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T04:54:31.346Z" }, "title": "CVE Program Container", "references": [ { "url": "https://git.kernel.org/stable/c/27df59c6071470efce7182ee92fbb16afba551e0", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/af114efe8d24b5711cfbedf7180f2ac1a296c24b", "tags": [ "x_transferred" ] } ] }, { "metrics": [ { "other": { "type": "ssvc", "content": { "id": "CVE-2024-42064", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "version": "2.0.3", "timestamp": "2024-09-10T16:20:05.965221Z" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-11T17:33:58.552Z" } } ] } }