CVE-2024-53072 – “AMD PMC STB Inaccessibility Ioremap Corruption”

CVE ID : CVE-2024-53072

Published : Nov. 19, 2024, 6:15 p.m. | 1 hour ago

Description : In the Linux kernel, the following vulnerability has been resolved:

platform/x86/amd/pmc: Detect when STB is not available

Loading the amd_pmc module as:

amd_pmc enable_stb=1

…can result in the following messages in the kernel ring buffer:

amd_pmc AMDI0009:00: SMU cmd failed. err: 0xff
ioremap on RAM at 0x0000000000000000 – 0x0000000000ffffff
WARNING: CPU: 10 PID: 2151 at arch/x86/mm/ioremap.c:217 __ioremap_caller+0x2cd/0x340

Further debugging reveals that this occurs when the requests for
S2D_PHYS_ADDR_LOW and S2D_PHYS_ADDR_HIGH return a value of 0,
indicating that the STB is inaccessible. To prevent the ioremap
warning and provide clarity to the user, handle the invalid address
and display an error message.

Severity: 0.0 | NA

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CVE-2024-53072 – “AMD PMC STB Inaccessibility Ioremap Corruption”