Bug 2460631 (CVE-2026-31524)

Summary:	CVE-2026-31524 kernel: HID: asus: avoid memory leak in asus_report_fixup()
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
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 flaw was found in the Linux kernel's Human Interface Device (HID) subsystem, specifically within the ASUS HID driver. The `asus_report_fixup()` function did not properly manage allocated memory, resulting in a memory leak (CWE-401). This issue could allow a local attacker to consume system resources, potentially leading to a denial of service. A minor out-of-bounds read (CWE-125) was also identified, though it is considered harmless.	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 2026-04-22 15:02:06 UTC

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

HID: asus: avoid memory leak in asus_report_fixup()

The asus_report_fixup() function was returning a newly allocated
kmemdup()-allocated buffer, but never freeing it.  Switch to
devm_kzalloc() to ensure the memory is managed and freed automatically
when the device is removed.

The caller of report_fixup() does not take ownership of the returned
pointer, but it is permitted to return a pointer whose lifetime is at
least that of the input buffer.

Also fix a harmless out-of-bounds read by copying only the original
descriptor size.

Comment 1 Keith Grant 2026-04-22 20:21:44 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026042213-CVE-2026-31524-3f28@gregkh/T