{"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"}}]}}