Bug 2502507 (CVE-2026-64060)

Summary:	CVE-2026-64060 kernel: netfs: Fix leak of request in netfs_write_begin() error handling
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 netfs component of the Linux kernel. An issue in the error handling of the `netfs_write_begin()` function can lead to a leak of a request resource. This occurs when an error is returned from `netfs_wait_for_read()`, preventing the proper release of the resource. This resource leak may result in system instability or 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 2026-07-19 17:03:09 UTC

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

netfs: Fix leak of request in netfs_write_begin() error handling

Fix netfs_write_begin() to not leak our ref on the request in the event
that we get an error from netfs_wait_for_read().

Comment 1 TEJ RATHI 2026-07-20 15:09:09 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026071910-CVE-2026-64060-4633@gregkh/T