Bug 2402267 (CVE-2023-53651)

Summary:	CVE-2023-53651 kernel: Linux kernel exc3000 driver: Denial of Service due to improper timer shutdown
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
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 exc3000 driver. This vulnerability occurs due to the driver failing to properly stop a timer during its unbinding or probe failure processes. A local attacker could exploit this issue, leading to a Use-After-Free (UAF) condition. This UAF can cause a system crash, resulting in a Denial of Service (DoS), and potentially lead to arbitrary code execution.	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 2025-10-07 16:06:26 UTC

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

Input: exc3000 - properly stop timer on shutdown

We need to stop the timer on driver unbind or probe failures, otherwise
we get UAF/Oops.

Comment 1 Alexander B 2025-12-23 15:06:08 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025100719-CVE-2023-53651-c6c7@gregkh/T