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)

https://git.kernel.org/stable/c/67461e0c15335894cc5d3b84cda823bf8cbdc886

https://git.kernel.org/stable/c/7ca695b3122297b06a3ed605bbe1cd32c85d9f5a

https://git.kernel.org/stable/c/86d2b20644b11d21fe52c596e6e922b4590a3e3f

https://git.kernel.org/stable/c/9900f6954be779011e7c2cd42addd87baf028bc5

https://git.kernel.org/stable/c/f2a4827e980ba07de4391fa84d9c39a12726bdd7

https://git.kernel.org/stable/c/fb30a3890d62fd50a95aef684faf64a307592e42

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