HighFix available

drm/amd/display: Validate GPIO pin LUT table size before iterating

Type: advisorySources: OSV

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Validate GPIO pin LUT table size before iterating [Why&How] The GPIO pin table parsers in get_gpio_i2c_info() and bios_parser_get_gpio_pin_info() derive an element count from the VBIOS table_header.structuresize field, then iterate over gpio_pin[] entries. However, GET_IMAGE() only validates that the table header itself fits within the BIOS image. If the VBIOS reports a structuresize larger than the actual mapped data, the loop reads past the end of the BIOS image, causing an out-of-bounds read. Fix this by calling bios_get_image() to validate that the full claimed structuresize is accessible within the BIOS image before entering the loop in both functions. (cherry picked from commit ba5e95b43b773ae1bf1f66ee6b31eb774e65afe3)

Products: Kernel
Affected versions: Not specified
Fixed versions: 6.1.175, 6.12.92, 6.18.34, 6.6.142, 7.0.11
CVEs: CVE-2026-64097
Confirmed fixed CVEs: Not specified
Updated in this feed: 5 Nov 2026, 06:11 UTC · Revision 1

Source evidence

drm/amd/display: Validate GPIO pin LUT table size before iterating

core-osv · Original source

Published 19 Jul 2026, 15:40 UTC

osv:CVE-2026-64097

Kernel

Fixed versions: 6.1.175, 6.6.142, 6.12.92, 6.18.34, 7.0.11

Complete source record

{
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  "url": "https://osv.dev/vulnerability/CVE-2026-64097",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "drm/amd/display: Validate GPIO pin LUT table size before iterating",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Validate GPIO pin LUT table size before iterating [Why&How] The GPIO pin table parsers in get_gpio_i2c_info() and bios_parser_get_gpio_pin_info() derive an element count from the VBIOS table_header.structuresize field, then iterate over gpio_pin[] entries. However, GET_IMAGE() only validates that the table header itself fits within the BIOS image. If the VBIOS reports a structuresize larger than the actual mapped data, the loop reads past the end of the BIOS image, causing an out-of-bounds read. Fix this by calling bios_get_image() to validate that the full claimed structuresize is accessible within the BIOS image before entering the loop in both functions. (cherry picked from commit ba5e95b43b773ae1bf1f66ee6b31eb774e65afe3)",
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      "modified": "2026-10-28T02:30:42.987416399Z",
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  "source_id": "core-osv",
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  "published_at": "2026-07-19T15:40:03.599+00:00"
}