CVE-2024-53072: platform/x86/amd/pmc: Detect when STB is not available

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-11-19 · updated 2026-06-17

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.

Affected products

Linux kernel: from 5.18 before 6.1.117; from 6.2 before 6.6.61; from 6.7 before 6.11.8; 6.12-rc1, 6.12-rc2, 6.12-rc3, 6.12-rc4, 6.12-rc5, 6.12-rc6 — fixed in 6.1.117, 6.11.8, 6.6.61

How to fix

Upgrade to a fixed version: Linux kernel 6.1.117, 6.11.8, 6.6.61. Check the vendor advisory for mitigations.

References

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