Bug 2426195 (CVE-2023-54320)

Summary:	CVE-2023-54320 kernel: platform/x86/amd: pmc: Fix memory leak in amd_pmc_stb_debugfs_open_v2()
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	rhel-process-autobot, watson-tool-maintainers
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	---
Doc Text:	A memory leak was found in the AMD PMC driver's STB debugfs interface. When amd_pmc_send_cmd() fails, the allocated buffer is not freed, causing memory to leak on each failed operation.	Story Points:	---
Clone Of:		Environment:
Last Closed:		Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description OSIDB Bzimport 2025-12-30 13:15:38 UTC

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

platform/x86/amd: pmc: Fix memory leak in amd_pmc_stb_debugfs_open_v2()

Function amd_pmc_stb_debugfs_open_v2() may be called when the STB
debug mechanism enabled.

When amd_pmc_send_cmd() fails, the 'buf' needs to be released.

Comment 1 Alexander B 2025-12-31 02:14:16 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025123021-CVE-2023-54320-465d@gregkh/T