Bug 2495953 (CVE-2026-53336)

Summary:	CVE-2026-53336 kernel: nvmem: layouts: onie-tlv: fix hang on unknown types
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
Whiteboard:
Fixed In Version:		Doc Type:	---
Doc Text:	A flaw was found in the Linux kernel's nvmem driver. This vulnerability allows a local attacker to trigger a denial of service (DoS) by providing a specially crafted EEPROM (Electrically Erasable Programmable Read-Only Memory) entry with an unknown type. This can cause the driver to enter an endless loop, making the system unresponsive.	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 2026-07-01 14:03:20 UTC

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

nvmem: layouts: onie-tlv: fix hang on unknown types

The EEPROM on my board has a vendor specific entry of type 0x41. When
stumbling upon that, this driver hangs in an endless loop.

Fix it by keep incrementing the offset on unknown entries, so the loop
will eventually stop.

Comment 1 Mauro Matteo Cascella 2026-07-01 16:18:47 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026070143-CVE-2026-53336-0ae1@gregkh/T