Bug 2416039 (CVE-2025-61915)

Summary: CVE-2025-61915 CUPS: Local denial-of-service via cupsd.conf update and related issues
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: security-response-team, zdohnal
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: ---
Doc Text:
A flaw was found in cups. A user in group defined by SystemGroup directive in /etc/cups/cups-files.conf can use the cups web ui to change the config and insert a malicious line. Then the cupsd process which runs as root will parse the new config and cause an out-of-bound write.
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:
Bug Depends On: 2420910, 2420911, 2420912    
Bug Blocks:    
Deadline: 2025-11-27   

Description OSIDB Bzimport 2025-11-20 03:27:42 UTC
A user in group defined by SystemGroup directive in /etc/cups/cups-files.conf can use the cups web ui to change the config 
and insert a malicious line.
Then the cupsd process which runs as root will parse the new config and  cause an out-of-bound write.

Comment 2 errata-xmlrpc 2026-01-08 13:00:59 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:0312 https://access.redhat.com/errata/RHSA-2026:0312

Comment 3 errata-xmlrpc 2026-01-12 14:36:50 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:0464 https://access.redhat.com/errata/RHSA-2026:0464

Comment 4 errata-xmlrpc 2026-01-14 13:51:36 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:0596 https://access.redhat.com/errata/RHSA-2026:0596