Bug 2483743

Summary:	CVE-2026-23558 xen: Xen: Privilege escalation or denial of service due to race condition in grant table version change [fedora-all]
Product:	[Fedora] Fedora	Reporter:	TEJ RATHI <trathi>
Component:	xen	Assignee:	Michael Young <m.a.young>
Status:	CLOSED CURRENTRELEASE	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	high	Docs Contact:
Priority:	high
Version:	rawhide	CC:	jforbes, m.a.young
Target Milestone:	---	Keywords:	Security, SecurityTracking
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:	{"flaws": ["0267fdc9-ef31-4382-88d4-ffc691360ba4"]}
Fixed In Version:		Doc Type:	---
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2026-06-12 22:04:48 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	2479868

Description TEJ RATHI 2026-06-01 12:58:25 UTC

Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

Comment 1 Michael Young 2026-06-12 22:04:48 UTC

This was fixed in xen 4.21.1-2 in an update dated Tue Apr 28 2026