CVE-2025-40014

Summary

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()

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxe6204f39fe3a7b4538815a2d778b601bd543649e < 7f2c746e09a3746bf937bc708129dc8af61d8f19affected
LinuxLinuxe6204f39fe3a7b4538815a2d778b601bd543649e < 76e51db43fe4aaaebcc5ddda67b0807f7c9bdeccaffected
LinuxLinux6.14affected
LinuxLinux0 < 6.14unaffected
LinuxLinux6.14.2 <= 6.14.*unaffected
LinuxLinux6.15 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: total

References