Bug 2438207 (CVE-2026-23948)

Summary: CVE-2026-23948 freerdp: FreeRDP has a NULL Pointer Dereference in rdp_write_logon_info_v2()
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: unspecifiedKeywords: Security
Target Milestone: ---   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: ---
Doc Text:
A null pointer dereference has been discovered in FreeRDP. A NULL pointer dereference vulnerability in rdp_write_logon_info_v2() allows a malicious RDP server to crash FreeRDP proxy by sending a specially crafted LogonInfoV2 PDU with cbDomain=0 or cbUserName=0.
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: 2438258, 2438309, 2438285, 2438299, 2438301    
Bug Blocks:    

Description OSIDB Bzimport 2026-02-09 20:01:58 UTC
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.22.0, a NULL pointer dereference vulnerability in rdp_write_logon_info_v2() allows a malicious RDP server to crash FreeRDP proxy by sending a specially crafted LogonInfoV2 PDU with cbDomain=0 or cbUserName=0. This vulnerability is fixed in 3.22.0.

Comment 2 errata-xmlrpc 2026-04-01 09:07:17 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 06:15:50 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 07:42:21 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 12:19:04 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 23:04:56 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 05:09:11 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 07:45:49 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 07:48:55 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 07:15:04 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 05:36:36 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 05:39:08 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 14:50:35 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 06:42:45 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 13:04:13 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