CVEvulnerability
CVE-2026-64097
7.8 HIGH
Official page ↗
- Status
- Modified
- Published
- 2026-07-19
- Last modified
- 2026-10-19
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- CVSS 3.1 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)
- 7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-125, CWE-787
Description
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 configurations
• linux linux kernel (>= 4.15 < 6.1.175)
• linux linux kernel (>= 6.2 < 6.6.142)
• linux linux kernel (>= 6.7 < 6.12.92)
• linux linux kernel (>= 6.13 < 6.18.34)
• linux linux kernel (>= 6.19 < 7.0.11)
• linux linux kernel 7.1
Related
References
- https://git.kernel.org/stable/c/67461e0c15335894cc5d3b84cda823bf8cbdc886 Patch
- https://git.kernel.org/stable/c/7ca695b3122297b06a3ed605bbe1cd32c85d9f5a Patch
- https://git.kernel.org/stable/c/86d2b20644b11d21fe52c596e6e922b4590a3e3f Patch
- https://git.kernel.org/stable/c/9900f6954be779011e7c2cd42addd87baf028bc5 Patch
- https://git.kernel.org/stable/c/f2a4827e980ba07de4391fa84d9c39a12726bdd7 Patch
- https://git.kernel.org/stable/c/fb30a3890d62fd50a95aef684faf64a307592e42 Patch