PT-2026-61414 · Linux · Linux

CVE-2026-64097 · Published 2026-07-19 · Updated 2026-07-19

NVD

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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)

Fix

Related Identifiers

CVE-2026-64097

Affected Products

Linux

References · 7

• https://nvd.nist.gov/vuln/detail/CVE-2026-64097 · Security Note
• https://git.kernel.org/stable/c/fb30a3890d62fd50a95aef684faf64a307592e42 · Note
• https://git.kernel.org/stable/c/67461e0c15335894cc5d3b84cda823bf8cbdc886 · Note
• https://git.kernel.org/stable/c/7ca695b3122297b06a3ed605bbe1cd32c85d9f5a · Note
• https://git.kernel.org/stable/c/f2a4827e980ba07de4391fa84d9c39a12726bdd7 · Note
• https://git.kernel.org/stable/c/86d2b20644b11d21fe52c596e6e922b4590a3e3f · Note
• https://git.kernel.org/stable/c/9900f6954be779011e7c2cd42addd87baf028bc5 · Note