Bug 2492823 (CVE-2026-53202)

Summary:	CVE-2026-53202 kernel: Kernel: Privilege escalation and denial of service via integer truncation in accel/ivpu
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 accel/ivpu component. A local attacker could exploit a signed integer truncation vulnerability in the Inter-Process Communication (IPC) receive path. This flaw occurs when a firmware-supplied data size is incorrectly converted, leading to an oversized memory copy operation that can overflow a kernel stack buffer. Successful exploitation could result in a denial of service through a kernel crash and potentially lead to privilege escalation.	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 2026-06-25 10:07:38 UTC

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

accel/ivpu: Fix signed integer truncation in IPC receive

Fix potential buffer overflow where firmware-supplied data_size is cast
to signed int before being used in min_t(). Large unsigned values
(>= 0x80000000) become negative, causing unsigned wraparound and
oversized memcpy operations that can overflow the stack buffer.

Change min_t(int, ...) to min() as both values are unsigned and can be
handled by min() without explicit cast.

Comment 1 Mauro Matteo Cascella 2026-06-29 14:05:02 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026062500-CVE-2026-53202-0343@gregkh/T

Comment 3 errata-xmlrpc 2026-08-12 13:08:05 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:54343 https://access.redhat.com/errata/RHSA-2026:54343

Comment 4 errata-xmlrpc 2026-08-13 00:45:04 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:54443 https://access.redhat.com/errata/RHSA-2026:54443