Bug 2548778 (CVE-2026-58280)

Summary:	CVE-2026-58280 dotnet10.0: dotnet9.0: dotnet: dotnet8.0: .NET Denial of Service Vulnerability
Product:	[Other] Security Response	Reporter:	Charles Timko <ctimko>
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	NEW ---	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	CC:	rhel-process-autobot, security-response-team, watson-tool-maintainers
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	---
Doc Text:	Uncontrolled recursion in .NET allows an unauthorized attacker to deny service over a network.	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:
Deadline:	2026-10-13

Description Charles Timko 2026-10-09 19:02:05 UTC

Uncontrolled recursion in .NET allows an unauthorized attacker to deny service over a network.

Affected products:
- .NET Runtime Libraries (release 10.0): 10.0.0 - 10.0.12; fixed 10.0.13
- .NET Runtime Libraries (release 9.0): 9.0.0 - 9.0.20; fixed 9.0.21
- .NET Runtime Libraries (release 11.0): 11.0.0-preview.1 - 11.0.0-rc.1; fixed 11.0.0-rc.2
- .NET Runtime Libraries (release 8.0): 8.0.0 - 8.0.31; fixed 8.0.32

Comment 1 Jon Orris 2026-10-20 21:36:12 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:86168 https://access.redhat.com/errata/RHSA-2026:86168

Comment 2 Jon Orris 2026-10-20 21:40:28 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:86195 https://access.redhat.com/errata/RHSA-2026:86195

Comment 3 Jon Orris 2026-10-20 21:43:07 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:86172 https://access.redhat.com/errata/RHSA-2026:86172

Comment 4 Jon Orris 2026-10-20 21:54:38 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:86170 https://access.redhat.com/errata/RHSA-2026:86170

Comment 5 Jon Orris 2026-10-20 21:58:23 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:86192 https://access.redhat.com/errata/RHSA-2026:86192

Comment 6 Jon Orris 2026-10-20 22:46:08 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:86169 https://access.redhat.com/errata/RHSA-2026:86169

Comment 7 Jon Orris 2026-10-20 22:49:49 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:86171 https://access.redhat.com/errata/RHSA-2026:86171

Comment 8 Jon Orris 2026-10-20 22:55:35 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:86193 https://access.redhat.com/errata/RHSA-2026:86193

Comment 9 Jon Orris 2026-10-21 03:41:45 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:86594 https://access.redhat.com/errata/RHSA-2026:86594