Bug 2429650 (CVE-2026-22856)

Summary: CVE-2026-22856 freerdp: FreeRDP heap-use-after-free
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: rhel-process-autobot, watson-tool-maintainers
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: ---
Doc Text:
A heap use after free flaw has been discovered in FreeRDP. A race in the serial channel IRP thread tracking allows a heap use‑after‑free when one thread removes an entry from serial->IrpThreads while another reads it.
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: 2429786, 2429821, 2429810, 2429813, 2429818    
Bug Blocks:    

Description OSIDB Bzimport 2026-01-14 18:01:38 UTC
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.20.1, a race in the serial channel IRP thread tracking allows a heap use‑after‑free when one thread removes an entry from serial->IrpThreads while another reads it. This vulnerability is fixed in 3.20.1.

Comment 2 errata-xmlrpc 2026-04-01 09:07:10 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:6340 https://access.redhat.com/errata/RHSA-2026:6340

Comment 3 errata-xmlrpc 2026-04-07 06:15:41 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.6 Extended Update Support

Via RHSA-2026:6727 https://access.redhat.com/errata/RHSA-2026:6727

Comment 4 errata-xmlrpc 2026-04-07 07:41:58 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10.0 Extended Update Support

Via RHSA-2026:6743 https://access.redhat.com/errata/RHSA-2026:6743

Comment 5 errata-xmlrpc 2026-04-07 12:18:58 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:6799 https://access.redhat.com/errata/RHSA-2026:6799

Comment 6 errata-xmlrpc 2026-04-07 23:04:50 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:6918 https://access.redhat.com/errata/RHSA-2026:6918

Comment 7 errata-xmlrpc 2026-04-08 05:09:05 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Extended Update Support

Via RHSA-2026:6958 https://access.redhat.com/errata/RHSA-2026:6958

Comment 8 errata-xmlrpc 2026-04-22 07:45:43 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions

Via RHSA-2026:9640 https://access.redhat.com/errata/RHSA-2026:9640

Comment 9 errata-xmlrpc 2026-04-22 07:48:46 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Via RHSA-2026:9641 https://access.redhat.com/errata/RHSA-2026:9641

Comment 10 errata-xmlrpc 2026-04-23 07:14:58 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions
  Red Hat Enterprise Linux 8.8 Telecommunications Update Service

Via RHSA-2026:10076 https://access.redhat.com/errata/RHSA-2026:10076

Comment 12 errata-xmlrpc 2026-04-27 05:36:30 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.2 Advanced Update Support

Via RHSA-2026:10734 https://access.redhat.com/errata/RHSA-2026:10734

Comment 13 errata-xmlrpc 2026-04-27 05:39:01 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
  Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On

Via RHSA-2026:10735 https://access.redhat.com/errata/RHSA-2026:10735

Comment 14 errata-xmlrpc 2026-04-27 14:50:25 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
  Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions
  Red Hat Enterprise Linux 8.6 Telecommunications Update Service

Via RHSA-2026:10951 https://access.redhat.com/errata/RHSA-2026:10951

Comment 15 errata-xmlrpc 2026-04-28 06:42:39 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7 Extended Lifecycle Support

Via RHSA-2026:11323 https://access.redhat.com/errata/RHSA-2026:11323

Comment 16 errata-xmlrpc 2026-05-19 13:04:02 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:19033 https://access.redhat.com/errata/RHSA-2026:19033