{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2024-27029","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2024-02-19T14:20:24.211Z","datePublished":"2024-05-01T12:53:22.513Z","dateUpdated":"2026-08-05T11:29:06.693Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-08-05T11:29:06.693Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu: fix mmhub client id out-of-bounds access\n\nProperly handle cid 0x140."}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","baseScore":7.1,"baseSeverity":"HIGH"},"scenarios":[{"lang":"en","value":"AV:L - The fault is provoked by submitting GPU work through the local DRM render node (/dev/dri/renderD*), whose VM protection fault interrupt drives `gmc_v11_0_process_interrupt` into the vulnerable print routine. There is no network-facing path into amdgpu MMHUB fault handling.\nAC:L - Causing an MMHUB VM protection fault is fully attacker-controlled — submit multimedia/user-mode-queue work referencing unmapped GPU virtual addresses — and the resulting client ID (e.g. UMSCH 0x140, which the pre-fix code itself acknowledged occurs) exceeds the 31-entry table, so the out-of-bounds read happens deterministically and can be repeated at will.\nPR:L - Only unprivileged access to the DRM render node is needed; no capability check guards command submission or the fault interrupt path, and render nodes are open to the logged-in user, the render/video group, and GPU-enabled containers.\nUI:N - The attacker triggers the faulting GPU submission entirely from their own process; no victim action or interaction with any other user is required.\nS:U - The out-of-bounds read and its consequences stay within the kernel's own security authority on the affected host, with no crossing of a VM, IOMMU, or sandbox boundary.\nC:H - The read runs off the end of a 496-byte table by up to ~8 KB, and the out-of-bounds word is then dereferenced as a string by `dev_err(\"%s\")`, dumping the contents of an unbounded and unvalidated kernel address into the kernel log — an arbitrary kernel-memory disclosure, not a small bounded read.\nI:N - The defect is purely a read of out-of-bounds memory used for log formatting; no kernel data structure is written and the bug provides no write primitive.\nA:H - The out-of-bounds pointer passed to printk is dereferenced without probing, so a non-canonical or unmapped value oopses inside the GPU interrupt handling path, killing the display/graphics driver and panicking the system under panic_on_oops."}]}],"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/amdgpu/mmhub_v3_3.c"],"versions":[{"version":"aba2be41470a11629c8378c3651323d7e5416df6","lessThan":"e1e076bda4fd6378ae650f2c6ef1a4ff93c5aea5","status":"affected","versionType":"git"},{"version":"aba2be41470a11629c8378c3651323d7e5416df6","lessThan":"1f24b3040f2b6ffcb97151fabb3070328254d923","status":"affected","versionType":"git"},{"version":"aba2be41470a11629c8378c3651323d7e5416df6","lessThan":"6540ff6482c1a5a6890ae44b23d0852ba1986d9e","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/amdgpu/mmhub_v3_3.c"],"versions":[{"version":"6.7","status":"affected"},{"version":"0","lessThan":"6.7","status":"unaffected","versionType":"semver"},{"version":"6.7.11","lessThanOrEqual":"6.7.*","status":"unaffected","versionType":"semver"},{"version":"6.8.2","lessThanOrEqual":"6.8.*","status":"unaffected","versionType":"semver"},{"version":"6.9","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":"6.7.11"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.7","versionEndExcluding":"6.8.2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.7","versionEndExcluding":"6.9"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/e1e076bda4fd6378ae650f2c6ef1a4ff93c5aea5"},{"url":"https://git.kernel.org/stable/c/1f24b3040f2b6ffcb97151fabb3070328254d923"},{"url":"https://git.kernel.org/stable/c/6540ff6482c1a5a6890ae44b23d0852ba1986d9e"}],"title":"drm/amdgpu: fix mmhub client id out-of-bounds access","x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2024-08-02T00:21:05.943Z"},"title":"CVE Program Container","references":[{"url":"https://git.kernel.org/stable/c/e1e076bda4fd6378ae650f2c6ef1a4ff93c5aea5","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/1f24b3040f2b6ffcb97151fabb3070328254d923","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/6540ff6482c1a5a6890ae44b23d0852ba1986d9e","tags":["x_transferred"]}]},{"metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2024-27029","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2024-09-10T15:44:24.346922Z"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2024-09-11T17:33:34.039Z"}}]}}