CVE-2025-40014 Information

Description

In the Linux kernel the following vulnerability has been resolved:

objtool spi: amd: Fix out-of-bounds stack access in amd_set_spi_freq()

If speed_hz < AMD_SPI_MIN_HZ amd_set_spi_freq() iterates over the entire amd_spi_freq array without breaking out early causing ‘i’ to go beyond the array bounds.

Fix that by stopping the loop when it gets to the last entry so the low speed_hz value gets clamped up to AMD_SPI_MIN_HZ.

Fixes the following warning with an UBSAN kernel:

drivers/spi/spi-amd.o: error: objtool: amd_set_spi_freq() falls through to next function amd_spi_set_opcode()

Reference

https://git.kernel.org/stable/c/76e51db43fe4aaaebcc5ddda67b0807f7c9bdecc https://git.kernel.org/stable/c/7f2c746e09a3746bf937bc708129dc8af61d8f19