{"id":"CVE-2026-64097","title":"drm/amd/display: Validate GPIO pin LUT table size before iterating","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: Validate GPIO pin LUT table size before iterating\n\n[Why&How]\nThe GPIO pin table parsers in get_gpio_i2c_info() and\nbios_parser_get_gpio_pin_info() deri…","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cvssSource":"cna","vendor":"Linux","product":"Linux","affected":["Linux >= ae79c310b1a6f97429a5784b65f125d9cc9c95b1 < 9900f6954be779011e7c2cd42addd87baf028bc5","Linux >= ae79c310b1a6f97429a5784b65f125d9cc9c95b1 < fb30a3890d62fd50a95aef684faf64a307592e42","Linux >= ae79c310b1a6f97429a5784b65f125d9cc9c95b1 < 67461e0c15335894cc5d3b84cda823bf8cbdc886","Linux >= ae79c310b1a6f97429a5784b65f125d9cc9c95b1 < 7ca695b3122297b06a3ed605bbe1cd32c85d9f5a","Linux >= ae79c310b1a6f97429a5784b65f125d9cc9c95b1 < f2a4827e980ba07de4391fa84d9c39a12726bdd7","Linux >= ae79c310b1a6f97429a5784b65f125d9cc9c95b1 < 86d2b20644b11d21fe52c596e6e922b4590a3e3f","Linux 4.15"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-10-16T15:36:13.887901Z"},"published":"2026-07-19","updated":"2026-10-16","sourceUpdated":"2026-10-16T15:42:21.830Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-64097","references":[{"url":"https://git.kernel.org/stable/c/9900f6954be779011e7c2cd42addd87baf028bc5"},{"url":"https://git.kernel.org/stable/c/fb30a3890d62fd50a95aef684faf64a307592e42"},{"url":"https://git.kernel.org/stable/c/67461e0c15335894cc5d3b84cda823bf8cbdc886"},{"url":"https://git.kernel.org/stable/c/7ca695b3122297b06a3ed605bbe1cd32c85d9f5a"},{"url":"https://git.kernel.org/stable/c/f2a4827e980ba07de4391fa84d9c39a12726bdd7"},{"url":"https://git.kernel.org/stable/c/86d2b20644b11d21fe52c596e6e922b4590a3e3f"}],"tags":["cve.org"],"epss":0.00129,"epssPercentile":0.0228,"ingestedAt":"2026-10-16T17:24:46.802Z","slug":"CVE-2026-64097","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: Validate GPIO pin LUT table size before iterating\n\n[Why&How]\nThe GPIO pin table parsers in get_gpio_i2c_info() and\nbios_parser_get_gpio_pin_info() derive an element count from the VBIOS\ntable_header.structuresize field, then iterate over gpio_pin[] entries.\nHowever, GET_IMAGE() only validates that the table header itself fits\nwithin the BIOS image. If the VBIOS reports a structuresize larger than\nthe actual mapped data, the loop reads past the end of the BIOS image,\ncausing an out-of-bounds read.\n\nFix this by calling bios_get_image() to validate that the full claimed\nstructuresize is accessible within the BIOS image before entering the\nloop in both functions.\n\n(cherry picked from commit ba5e95b43b773ae1bf1f66ee6b31eb774e65afe3)\n\n## Affected\n\n- `Linux >= ae79c310b1a6f97429a5784b65f125d9cc9c95b1 < 9900f6954be779011e7c2cd42addd87baf028bc5`\n- `Linux >= ae79c310b1a6f97429a5784b65f125d9cc9c95b1 < fb30a3890d62fd50a95aef684faf64a307592e42`\n- `Linux >= ae79c310b1a6f97429a5784b65f125d9cc9c95b1 < 67461e0c15335894cc5d3b84cda823bf8cbdc886`\n- `Linux >= ae79c310b1a6f97429a5784b65f125d9cc9c95b1 < 7ca695b3122297b06a3ed605bbe1cd32c85d9f5a`\n- `Linux >= ae79c310b1a6f97429a5784b65f125d9cc9c95b1 < f2a4827e980ba07de4391fa84d9c39a12726bdd7`\n- `Linux >= ae79c310b1a6f97429a5784b65f125d9cc9c95b1 < 86d2b20644b11d21fe52c596e6e922b4590a3e3f`\n- `Linux 4.15`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}