Bug 2416040 (CVE-2025-58436) - CVE-2025-58436 cups: Slow client communication leads to a possible DoS attack
Summary: CVE-2025-58436 cups: Slow client communication leads to a possible DoS attack
Keywords:
Status: NEW
Alias: CVE-2025-58436
Deadline: 2025-11-27
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2420913 2420914 2420915
Blocks:
TreeView+ depends on / blocked
 
Reported: 2025-11-20 03:31 UTC by OSIDB Bzimport
Modified: 2026-01-19 10:36 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2026:0374 0 None None None 2026-01-08 16:30:51 UTC
Red Hat Product Errata RHBA-2026:0478 0 None None None 2026-01-12 20:41:01 UTC
Red Hat Product Errata RHBA-2026:0487 0 None None None 2026-01-13 08:41:29 UTC
Red Hat Product Errata RHBA-2026:0625 0 None None None 2026-01-14 18:38:31 UTC
Red Hat Product Errata RHBA-2026:0626 0 None None None 2026-01-14 18:47:40 UTC
Red Hat Product Errata RHBA-2026:0703 0 None None None 2026-01-15 12:41:14 UTC
Red Hat Product Errata RHBA-2026:0707 0 None None None 2026-01-15 13:29:39 UTC
Red Hat Product Errata RHBA-2026:0709 0 None None None 2026-01-15 16:05:28 UTC
Red Hat Product Errata RHBA-2026:0778 0 None None None 2026-01-19 10:36:01 UTC
Red Hat Product Errata RHSA-2026:0312 0 None None None 2026-01-08 13:01:01 UTC
Red Hat Product Errata RHSA-2026:0464 0 None None None 2026-01-12 14:36:51 UTC
Red Hat Product Errata RHSA-2026:0596 0 None None None 2026-01-14 13:51:38 UTC

Description OSIDB Bzimport 2025-11-20 03:31:25 UTC 
A client that connects to cupsd but sends slow messages, e.g. only one  byte per second, delays cupsd as a whole, such that it becomes unusable 
by other clients.
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
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