Bug 2467199 (CVE-2026-43251)

Summary:	CVE-2026-43251 kernel: HID: prodikeys: Check presence of pm->input_ep82
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
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) prodikeys driver. A local attacker can exploit this vulnerability by connecting a specially crafted Universal Serial Bus (USB) device. This device can send a malicious report descriptor, bypassing a necessary check and causing a null pointer dereference. This issue can lead to a system crash, resulting in a Denial of Service (DoS).	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 2026-05-06 13:10:24 UTC

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

HID: prodikeys: Check presence of pm->input_ep82

Fake USB devices can send their own report descriptors for which the
input_mapping() hook does not get called.  In this case, pm->input_ep82 stays
NULL, which leads to a crash later.

This does not happen with the real device, but can be provoked by imposing as
one.

Comment 1 Keith Grant 2026-05-06 23:13:27 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026050603-CVE-2026-43251-1276@gregkh/T