Bug 2516542 (CVE-2026-72365)

Summary:	CVE-2026-72365 kernel: netfs: Fix writethrough to use collection offload
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
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 netfs component of the Linux kernel. This vulnerability arises from incorrect handling of NETFS_RREQ_OFFLOAD_COLLECTION during writethrough operations. This issue could lead to asynchronous O_SYNC writes not being properly collected, potentially resulting in data inconsistency or loss.	Story Points:	---
Clone Of:		Environment:
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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 2026-08-15 06:18:00 UTC

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

netfs: Fix writethrough to use collection offload

Fix writethrough write to set NETFS_RREQ_OFFLOAD_COLLECTION on the request
so that collection is processed asynchronously rather than only right at
the end - and also so that asynchronous O_SYNC writes get collected at all.

Comment 1 Keith Grant 2026-08-19 14:28:55 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026081514-CVE-2026-72365-6f53@gregkh/T