Bug 2430887 (CVE-2026-23531) - CVE-2026-23531 freerdp: FreeRDP: Heap buffer overflow via crafted RDPGFX surface updates leads to denial of service and potential code execution.
Summary: CVE-2026-23531 freerdp: FreeRDP: Heap buffer overflow via crafted RDPGFX surf...
Keywords:
Status: NEW
Alias: CVE-2026-23531
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2430904 2430906 2430908 2430905 2430907
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-01-19 18:02 UTC by OSIDB Bzimport
Modified: 2026-02-23 01:50 UTC (History)
0 users

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 RHSA-2026:2048 0 None None None 2026-02-05 10:19:32 UTC
Red Hat Product Errata RHSA-2026:2081 0 None None None 2026-02-05 11:43:43 UTC
Red Hat Product Errata RHSA-2026:2222 0 None None None 2026-02-09 01:33:58 UTC
Red Hat Product Errata RHSA-2026:2714 0 None None None 2026-02-16 11:38:36 UTC
Red Hat Product Errata RHSA-2026:2736 0 None None None 2026-02-16 13:05:17 UTC
Red Hat Product Errata RHSA-2026:2770 0 None None None 2026-02-17 03:25:41 UTC
Red Hat Product Errata RHSA-2026:2824 0 None None None 2026-02-17 15:55:58 UTC
Red Hat Product Errata RHSA-2026:2952 0 None None None 2026-02-18 14:30:23 UTC
Red Hat Product Errata RHSA-2026:3036 0 None None None 2026-02-23 01:38:58 UTC
Red Hat Product Errata RHSA-2026:3037 0 None None None 2026-02-23 01:50:20 UTC
Red Hat Product Errata RHSA-2026:3038 0 None None None 2026-02-23 01:32:47 UTC
Red Hat Product Errata RHSA-2026:3039 0 None None None 2026-02-23 01:33:32 UTC
Red Hat Product Errata RHSA-2026:3041 0 None None None 2026-02-23 01:42:22 UTC

Description OSIDB Bzimport 2026-01-19 18:02:17 UTC 
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.21.0, in ClearCodec, when `glyphData` is present, `clear_decompress` calls `freerdp_image_copy_no_overlap` without validating the destination rectangle, allowing an out-of-bounds read/write via crafted RDPGFX surface updates. A malicious server can trigger a client‑side heap buffer overflow, causing a crash (DoS) and potential heap corruption with code‑execution risk depending on allocator behavior and surrounding heap layout. Version 3.21.0 contains a patch for the issue.
Comment 2 errata-xmlrpc 2026-02-05 10:19:31 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:2048 https://access.redhat.com/errata/RHSA-2026:2048
Comment 3 errata-xmlrpc 2026-02-05 11:43:42 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:2081 https://access.redhat.com/errata/RHSA-2026:2081
Comment 4 errata-xmlrpc 2026-02-09 01:33:57 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:2222 https://access.redhat.com/errata/RHSA-2026:2222
Comment 5 errata-xmlrpc 2026-02-16 11:38:35 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7 Extended Lifecycle Support

Via RHSA-2026:2714 https://access.redhat.com/errata/RHSA-2026:2714
Comment 6 errata-xmlrpc 2026-02-16 13:05:16 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Extended Update Support

Via RHSA-2026:2736 https://access.redhat.com/errata/RHSA-2026:2736
Comment 7 errata-xmlrpc 2026-02-17 03:25:40 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions

Via RHSA-2026:2770 https://access.redhat.com/errata/RHSA-2026:2770
Comment 8 errata-xmlrpc 2026-02-17 15:55:57 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Via RHSA-2026:2824 https://access.redhat.com/errata/RHSA-2026:2824
Comment 9 errata-xmlrpc 2026-02-18 14:30:22 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10.0 Extended Update Support

Via RHSA-2026:2952 https://access.redhat.com/errata/RHSA-2026:2952
Comment 10 errata-xmlrpc 2026-02-23 01:32:46 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-2026:3038 https://access.redhat.com/errata/RHSA-2026:3038
Comment 11 errata-xmlrpc 2026-02-23 01:33:31 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.2 Advanced Update Support

Via RHSA-2026:3039 https://access.redhat.com/errata/RHSA-2026:3039
Comment 12 errata-xmlrpc 2026-02-23 01:38:57 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-2026:3036 https://access.redhat.com/errata/RHSA-2026:3036
Comment 13 errata-xmlrpc 2026-02-23 01:42:21 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-2026:3041 https://access.redhat.com/errata/RHSA-2026:3041
Comment 14 errata-xmlrpc 2026-02-23 01:50:19 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.6 Extended Update Support

Via RHSA-2026:3037 https://access.redhat.com/errata/RHSA-2026:3037
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