{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2024-42066","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2024-07-29T15:50:41.167Z","datePublished":"2024-07-29T15:52:30.984Z","dateUpdated":"2026-08-05T11:35:24.979Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-08-05T11:35:24.979Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/xe: Fix potential integer overflow in page size calculation\n\nExplicitly cast tbo->page_alignment to u64 before bit-shifting to\nprevent overflow when assigning to min_page_size."}],"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 code is reached only through the DRM_IOCTL_XE_GEM_CREATE ioctl on the local /dev/dri/renderD* node, which drives TTM BO validation into xe_ttm_vram_mgr_new(). There is no remote or network-facing path into the xe VRAM manager.\nAC:L - The triggering sequence is a single deterministic ioctl with no race window, no memory-layout dependency, and no reliance on victim state. Per the guidance, the absence of any attacker-controlled race or unpredictable precondition in the call sequence makes this Low.\nPR:L - The ioctl is DRM_RENDER_ALLOW, so it needs neither DRM master nor any capability — an ordinary local account with render-node access (default for desktop sessions via logind, and for apps on Android/embedded GPU stacks) suffices. Real root is not required.\nUI:N - The attacker performs the GEM create ioctl entirely on their own; no victim must open a file, mount a filesystem, or take any other action.\nS:U - The truncated min_page_size affects VRAM buddy allocation inside the same kernel security authority that already manages the requesting process's buffers. No IOMMU, hypervisor, or sandbox boundary is crossed.\nC:H - A nonzero truncated min_page_size yields a VRAM allocation under-aligned relative to the hardware's 64K page requirement, so GPU page-table entries can cover VRAM belonging to other buffer objects, exposing another client's GPU memory contents. Treated as High per the guidance that memory-safety defects leveragable for disclosure score H.\nI:H - The same under-aligned mapping is writable by the GPU, allowing writes past the intended buffer into neighbouring VRAM belonging to other contexts, which is an out-of-bounds write primitive in device memory. Out-of-bounds writes score High.\nA:H - Truncation of the shift to exactly zero lands in WARN_ON(min_page_size < mm->chunk_size), producing a kernel warning that panics outright on the panic_on_warn configurations common in hardened, CI, and cloud kernels; corrupted VRAM mappings also produce GPU hangs and resets. Any kernel crash or hang scores High."}]}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/xe/xe_ttm_vram_mgr.c"],"versions":[{"version":"dd08ebf6c3525a7ea2186e636df064ea47281987","lessThan":"79d54ddf0e292b810887994bb04709c5ac0e1531","status":"affected","versionType":"git"},{"version":"dd08ebf6c3525a7ea2186e636df064ea47281987","lessThan":"4f4fcafde343a54465f85a2909fc684918507a4b","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/xe/xe_ttm_vram_mgr.c"],"versions":[{"version":"6.8","status":"affected"},{"version":"0","lessThan":"6.8","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":"6.8","versionEndExcluding":"6.9.8"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.8","versionEndExcluding":"6.10"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/79d54ddf0e292b810887994bb04709c5ac0e1531"},{"url":"https://git.kernel.org/stable/c/4f4fcafde343a54465f85a2909fc684918507a4b"}],"title":"drm/xe: Fix potential integer overflow in page size calculation","x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2024-08-02T04:54:31.373Z"},"title":"CVE Program Container","references":[{"url":"https://git.kernel.org/stable/c/79d54ddf0e292b810887994bb04709c5ac0e1531","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/4f4fcafde343a54465f85a2909fc684918507a4b","tags":["x_transferred"]}]},{"metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2024-42066","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2024-09-10T16:19:59.323646Z"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2024-09-11T17:32:55.779Z"}}]}}