Bug 2483744

Summary: CVE-2026-23557 xen: Xenstored: Denial of Service via XS_RESET_WATCHES command [fedora-all]
Product: [Fedora] Fedora Reporter: TEJ RATHI <trathi>
Component: xenAssignee: Michael Young <m.a.young>
Status: CLOSED CURRENTRELEASE QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: medium Docs Contact:
Priority: medium    
Version: rawhideCC: jforbes, m.a.young
Target Milestone: ---Keywords: Security, SecurityTracking
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["09c06d51-fd34-4d8f-ab9a-9ac4049672e7"]}
Fixed In Version: Doc Type: ---
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2026-06-12 22:12:47 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: 2479878    

Description TEJ RATHI 2026-06-01 13:00:59 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 22:12:47 UTC 
This was fixed in xen 4.21.1-2 dated Tue Apr 28 202