Bug 2482009 (CVE-2026-45881)

Summary:	CVE-2026-45881 kernel: soc: mediatek: svs: Fix memory leak in svs_enable_debug_write()
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	NEW ---	QA Contact:
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	unspecified	CC:	rhel-process-autobot, watson-tool-maintainers
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
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Doc Text:	A flaw was found in the MediaTek SVS (System Voltage Scaling) driver within the Linux kernel. A memory leak occurs in the `svs_enable_debug_write()` function when a buffer, allocated during a debug write operation, is not properly freed if an integer conversion fails. This vulnerability could allow a local attacker to cause resource exhaustion, potentially leading to a Denial of Service (DoS) condition.	Story Points:	---
Clone Of:		Environment:
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Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description OSIDB Bzimport 2026-05-27 15:06:50 UTC

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

soc: mediatek: svs: Fix memory leak in svs_enable_debug_write()

In svs_enable_debug_write(), the buf allocated by memdup_user_nul()
is leaked if kstrtoint() fails.

Fix this by using __free(kfree) to automatically free buf, eliminating
the need for explicit kfree() calls and preventing leaks.

[Angelo: Added missing cleanup.h inclusion]

Comment 1 Keith Grant 2026-05-28 03:18:13 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026052715-CVE-2026-45881-802e@gregkh/T