CVE-2022-48881: platform/x86/amd: Fix refcount leak in amd_pmc_probe

Severity: high (CVSS 7.1 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: 2024-08-21 · updated 2026-06-17

Description

In the Linux kernel, the following vulnerability has been resolved: platform/x86/amd: Fix refcount leak in amd_pmc_probe pci_get_domain_bus_and_slot() takes reference, the caller should release the reference by calling pci_dev_put() after use. Call pci_dev_put() in the error path to fix this.

Affected products

Linux kernel: from 5.18 before 6.1.7 — fixed in 6.1.7

How to fix

Upgrade to a fixed version: Linux kernel 6.1.7. Check the vendor advisory for mitigations.

References

https://git.kernel.org/stable/c/3944162821295993ec89992dec98ab6be6306cc0
https://git.kernel.org/stable/c/ccb32e2be14271a60e9ba89c6d5660cc9998773c

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