CVE-2026-64097

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)

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxae79c310b1a6f97429a5784b65f125d9cc9c95b1 < 9900f6954be779011e7c2cd42addd87baf028bc5affected
LinuxLinuxae79c310b1a6f97429a5784b65f125d9cc9c95b1 < fb30a3890d62fd50a95aef684faf64a307592e42affected
LinuxLinuxae79c310b1a6f97429a5784b65f125d9cc9c95b1 < 67461e0c15335894cc5d3b84cda823bf8cbdc886affected
LinuxLinuxae79c310b1a6f97429a5784b65f125d9cc9c95b1 < 7ca695b3122297b06a3ed605bbe1cd32c85d9f5aaffected
LinuxLinuxae79c310b1a6f97429a5784b65f125d9cc9c95b1 < f2a4827e980ba07de4391fa84d9c39a12726bdd7affected
LinuxLinuxae79c310b1a6f97429a5784b65f125d9cc9c95b1 < 86d2b20644b11d21fe52c596e6e922b4590a3e3faffected
LinuxLinux4.15affected
LinuxLinux0 < 4.15unaffected
LinuxLinux6.1.175 <= 6.1.*unaffected
LinuxLinux6.6.142 <= 6.6.*unaffected
LinuxLinux6.12.92 <= 6.12.*unaffected
LinuxLinux6.18.34 <= 6.18.*unaffected
LinuxLinux7.0.11 <= 7.0.*unaffected
LinuxLinux7.1 <= *unaffected

Weaknesses

References