Bug 2565714 (CVE-2026-99260)

Summary:	CVE-2026-99260 kernel: kernel: Denial of Service via improper attribute conversion in NTFS
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:	akhatavk, aos-team-art-private, asdas, dpaolell, jdelft, jupierce, lgarciaa, mbiarnes, ppalepu, ppostler, prdhamdh, rhel-process-autobot, sghai, sidsharm, suppawar, vlaad, 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 NTFS file system implementation. This vulnerability allows a local user to cause a Denial of Service (DoS) or file system corruption when setting compression or sparse attributes on a file. Because the driver fails to properly convert resident data stored directly within the file record into non-resident storage, the file system is left in an invalid state.	Story Points:	---
Clone Of:		Environment:
Last Closed:		Type:	---
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description OSIDB Bzimport 2026-11-03 11:32:37 UTC

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

ntfs: fix resident conversion in ntfs_new_attr_flags

When setting sparse/compressed flags on a resident attribute, the
function skipped the resident-to-non-resident conversion and
terminated.