{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2024-46818","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2024-09-11T15:12:18.284Z","datePublished":"2024-09-27T12:35:59.187Z","dateUpdated":"2026-08-05T11:38:49.209Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-08-05T11:38:49.209Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: Check gpio_id before used as array index\n\n[WHY & HOW]\nGPIO_ID_UNKNOWN (-1) is not a valid value for array index and therefore\nshould be checked in advance.\n\nThis fixes 5 OVERRUN 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 GPIO service paths are reached only through the local AMD display driver — DRM atomic modeset/stereo ioctls on /dev/dri/card0 and link detect/encoder enable on hotplug. There is no network or remote-peer input anywhere on the path.\nAC:L - In the affected versions `id` is an uninitialized stack variable in `dal_gpio_service_create_generic_mux()`/`create_irq()` that `offset_to_id()` leaves unwritten on its DDC arms, so the index is residual stack data a local caller can groom via repeated ioctls before triggering the modeset. No race or unpredictable external state is required.\nPR:L - An unprivileged local user with a graphical session holds DRM master on the card node and can issue the atomic commits that drive `dc_set_generic_gpio_for_stereo()` and encoder enable/disable. No CAP_SYS_ADMIN or root is needed.\nUI:N - The attacker drives the modeset and GPIO open/close sequence entirely from their own process; no second user must open a file, plug in a display, or take any action.\nS:U - The out-of-bounds access corrupts kernel memory belonging to the same kernel security authority; there is no VM, IOMMU, or sandbox boundary crossed.\nC:H - `busyness[-1]` loads `factory.funcs` (a kernel `.rodata` pointer) and `is_pin_busy()` dereferences it at attacker-influenced offset `en`, and a groomed index yields an out-of-bounds pointer load plus read — memory corruption of this shape is leverageable for kernel memory disclosure and KASLR defeat.\nI:H - `set_pin_busy()`/`set_pin_free()` perform an out-of-bounds write (`busyness[id][en] = true/false`) through that out-of-bounds-loaded pointer, landing in the `const struct hw_factory_funcs` vtable whose entries are later invoked indirectly (`funcs->init_ddc_data`, `funcs->get_ddc_pin`), giving a path to control-flow corruption.\nA:H - Writing through the negative index hits read-only `.rodata` under CONFIG_STRICT_KERNEL_RWX, or a wild pointer with a groomed index, producing an immediate kernel oops/panic; the ASSERT_CRITICAL paths do not prevent the access."}]}],"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/gpio/gpio_service.c"],"versions":[{"version":"4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c","lessThan":"8520fdc8ecc38f240a8e9e7af89cca6739c3e790","status":"affected","versionType":"git"},{"version":"4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c","lessThan":"40c2e8bc117cab8bca8814735f28a8b121654a84","status":"affected","versionType":"git"},{"version":"4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c","lessThan":"0184cca30cad74d88f5c875d4e26999e26325700","status":"affected","versionType":"git"},{"version":"4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c","lessThan":"276e3fd93e3beb5894eb1cc8480f9f417d51524d","status":"affected","versionType":"git"},{"version":"4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c","lessThan":"08e7755f754e3d2cef7d3a7da538d33526bd6f7c","status":"affected","versionType":"git"},{"version":"4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c","lessThan":"3d4198ab612ad48f73383ad3bb5663e6f0cdf406","status":"affected","versionType":"git"},{"version":"4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c","lessThan":"2a5626eeb3b5eec7a36886f9556113dd93ec8ed6","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/gpio/gpio_service.c"],"versions":[{"version":"4.15","status":"affected"},{"version":"0","lessThan":"4.15","status":"unaffected","versionType":"semver"},{"version":"5.4.284","lessThanOrEqual":"5.4.*","status":"unaffected","versionType":"semver"},{"version":"5.10.226","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.167","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.109","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.50","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.10.9","lessThanOrEqual":"6.10.*","status":"unaffected","versionType":"semver"},{"version":"6.11","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":"4.15","versionEndExcluding":"5.4.284"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.15","versionEndExcluding":"5.10.226"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.15","versionEndExcluding":"5.15.167"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.15","versionEndExcluding":"6.1.109"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.15","versionEndExcluding":"6.6.50"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.15","versionEndExcluding":"6.10.9"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.15","versionEndExcluding":"6.11"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/8520fdc8ecc38f240a8e9e7af89cca6739c3e790"},{"url":"https://git.kernel.org/stable/c/40c2e8bc117cab8bca8814735f28a8b121654a84"},{"url":"https://git.kernel.org/stable/c/0184cca30cad74d88f5c875d4e26999e26325700"},{"url":"https://git.kernel.org/stable/c/276e3fd93e3beb5894eb1cc8480f9f417d51524d"},{"url":"https://git.kernel.org/stable/c/08e7755f754e3d2cef7d3a7da538d33526bd6f7c"},{"url":"https://git.kernel.org/stable/c/3d4198ab612ad48f73383ad3bb5663e6f0cdf406"},{"url":"https://git.kernel.org/stable/c/2a5626eeb3b5eec7a36886f9556113dd93ec8ed6"}],"title":"drm/amd/display: Check gpio_id before used as array index","x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2024-09-29T14:15:06.184629Z","id":"CVE-2024-46818","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2024-09-29T14:15:15.550Z"}},{"title":"CVE Program Container","references":[{"url":"https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"},{"url":"https://lists.debian.org/debian-lts-announce/2024/10/msg00003.html"}],"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2025-11-03T22:19:05.133Z"}}]}}