Upstream information

CVE-2026-22851 at MITRE

Description

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.20.1, a race condition between the RDPGFX dynamic virtual channel thread and the SDL render thread leads to a heap use-after-free. Specifically, an escaped pointer to sdl->primary (SDL_Surface) is accessed after it has been freed during RDPGFX ResetGraphics handling. This vulnerability is fixed in 3.20.1.

Upstream Security Advisories:

SUSE information

Overall state of this security issue: Pending

This issue is currently rated as having moderate severity.

CVSS v3 Scores
CVSS detail National Vulnerability Database SUSE
Base Score 5.9 5.9
Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network Network
Attack Complexity High High
Privileges Required None None
User Interaction None None
Scope Unchanged Unchanged
Confidentiality Impact None None
Integrity Impact None None
Availability Impact High High
CVSSv3 Version 3.1 3.1
CVSS v4 Scores
CVSS detail CNA (GitHub) SUSE
Base Score 6.9 8.2
Vector CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Attack Vector Network Network
Attack Complexity High High
Attack Requirements None None
Privileges Required None None
User Interaction None None
Vulnerable System Confidentiality Impact None None
Vulnerable System Integrity Impact None None
Vulnerable System Availability Impact High High
Subsequent System Confidentiality Impact None None
Subsequent System Integrity Impact None None
Subsequent System Availability Impact None None
CVSSv4 Version 4.0 4.0
SUSE Bugzilla entry: 1256717 [NEW]

SUSE Security Advisories:

List of released packages

Product(s) Fixed package version(s) References
Container suse/sl-micro/6.0/baremetal-os-container:latest
Container suse/sl-micro/6.0/kvm-os-container:latest
Container suse/sl-micro/6.0/rt-os-container:latest
  • libcurl-mini4 >= 8.14.1-slfo.1.1_4.1
Container suse/sl-micro/6.0/base-os-container:latest
Container suse/sl-micro/6.0/toolbox:latest
Image SL-Micro
Image SLE-Micro
Image SLE-Micro-Azure
Image SLE-Micro-BYOS
Image SLE-Micro-BYOS-Azure
Image SLE-Micro-BYOS-EC2
Image SLE-Micro-BYOS-GCE
Image SLE-Micro-EC2
Image SLE-Micro-GCE
  • curl >= 8.14.1-slfo.1.1_4.1
  • libcurl-mini4 >= 8.14.1-slfo.1.1_4.1
Container suse/sl-micro/6.1/baremetal-os-container:2.2.1-7.43
Container suse/sl-micro/6.1/kvm-os-container:2.2.1-5.67
Container suse/sl-micro/6.1/rt-os-container:2.2.1-5.57
  • libcurl4 >= 8.14.1-slfo.1.1_4.1
Container suse/sl-micro/6.1/base-os-container:2.2.1-5.64
Image SL-Micro-Azure
Image SL-Micro-BYOS-Azure
Image SL-Micro-BYOS-EC2
Image SL-Micro-BYOS-GCE
Image SL-Micro-EC2
Image SUSE-Multi-Linux-Manager-Proxy-BYOS-Azure
Image SUSE-Multi-Linux-Manager-Proxy-BYOS-EC2
Image SUSE-Multi-Linux-Manager-Proxy-BYOS-GCE
Image SUSE-Multi-Linux-Manager-Server-Azure-llc
Image SUSE-Multi-Linux-Manager-Server-Azure-ltd
Image SUSE-Multi-Linux-Manager-Server-BYOS-Azure
Image SUSE-Multi-Linux-Manager-Server-BYOS-EC2
Image SUSE-Multi-Linux-Manager-Server-BYOS-GCE
Image SUSE-Multi-Linux-Manager-Server-EC2-llc
Image SUSE-Multi-Linux-Manager-Server-EC2-ltd
  • curl >= 8.14.1-slfo.1.1_4.1
  • libcurl4 >= 8.14.1-slfo.1.1_4.1
SUSE Linux Enterprise Desktop 15 SP7
SUSE Linux Enterprise Server 15 SP7
SUSE Linux Enterprise Server for SAP Applications 15 SP7
SUSE Linux Enterprise Workstation Extension 15 SP7
  • freerdp >= 3.10.3-150700.3.3.1
  • freerdp-devel >= 3.10.3-150700.3.3.1
  • freerdp-proxy >= 3.10.3-150700.3.3.1
  • freerdp-proxy-plugins >= 3.10.3-150700.3.3.1
  • freerdp-sdl >= 3.10.3-150700.3.3.1
  • freerdp-server >= 3.10.3-150700.3.3.1
  • libfreerdp-server-proxy3-3 >= 3.10.3-150700.3.3.1
  • libfreerdp3-3 >= 3.10.3-150700.3.3.1
  • librdtk0-0 >= 3.10.3-150700.3.3.1
  • libwinpr3-3 >= 3.10.3-150700.3.3.1
  • winpr-devel >= 3.10.3-150700.3.3.1
 Patchnames:
SUSE-SLE-Product-WE-15-SP7-2026-345
SUSE Linux Enterprise Module for Package Hub 15 SP7
  • freerdp >= 3.10.3-150700.3.3.1
  • freerdp-devel >= 3.10.3-150700.3.3.1
  • freerdp-proxy >= 3.10.3-150700.3.3.1
  • freerdp-server >= 3.10.3-150700.3.3.1
  • freerdp-wayland >= 3.10.3-150700.3.3.1
  • libuwac0-0 >= 3.10.3-150700.3.3.1
 Patchnames:
SUSE-SLE-Module-Packagehub-Subpackages-15-SP7-2026-345
openSUSE Leap 16.0
  • freerdp >= 3.22.0-160000.1.1
  • freerdp-devel >= 3.22.0-160000.1.1
  • freerdp-proxy >= 3.22.0-160000.1.1
  • freerdp-proxy-plugins >= 3.22.0-160000.1.1
  • freerdp-sdl >= 3.22.0-160000.1.1
  • freerdp-server >= 3.22.0-160000.1.1
  • freerdp-wayland >= 3.22.0-160000.1.1
  • libfreerdp-server-proxy3-3 >= 3.22.0-160000.1.1
  • libfreerdp3-3 >= 3.22.0-160000.1.1
  • librdtk0-0 >= 3.22.0-160000.1.1
  • libuwac0-0 >= 3.22.0-160000.1.1
  • libwinpr3-3 >= 3.22.0-160000.1.1
  • rdtk0-devel >= 3.22.0-160000.1.1
  • uwac0-devel >= 3.22.0-160000.1.1
  • winpr-devel >= 3.22.0-160000.1.1
 Patchnames:
openSUSE-Leap-16.0-368
openSUSE Tumbleweed
  • freerdp >= 3.20.2-1.1
  • freerdp-devel >= 3.20.2-1.1
  • freerdp-proxy >= 3.20.2-1.1
  • freerdp-proxy-plugins >= 3.20.2-1.1
  • freerdp-sdl >= 3.20.2-1.1
  • freerdp-server >= 3.20.2-1.1
  • freerdp-wayland >= 3.20.2-1.1
  • libfreerdp-server-proxy3-3 >= 3.20.2-1.1
  • libfreerdp3-3 >= 3.20.2-1.1
  • librdtk0-0 >= 3.20.2-1.1
  • libuwac0-0 >= 3.20.2-1.1
  • libwinpr3-3 >= 3.20.2-1.1
  • rdtk0-devel >= 3.20.2-1.1
  • uwac0-devel >= 3.20.2-1.1
  • winpr-devel >= 3.20.2-1.1
 Patchnames:
openSUSE-Tumbleweed-2026-10059

List of packages in QA

Product(s) Package(s)
SUSE Linux Enterprise Server 16.0
  • freerdp >= 3.22.0-160000.1.1
  • freerdp-devel >= 3.22.0-160000.1.1
  • freerdp-proxy >= 3.22.0-160000.1.1
  • freerdp-proxy-plugins >= 3.22.0-160000.1.1
  • freerdp-sdl >= 3.22.0-160000.1.1
  • freerdp-server >= 3.22.0-160000.1.1
  • freerdp-wayland >= 3.22.0-160000.1.1
  • libfreerdp-server-proxy3-3 >= 3.22.0-160000.1.1
  • libfreerdp3-3 >= 3.22.0-160000.1.1
  • librdtk0-0 >= 3.22.0-160000.1.1
  • libuwac0-0 >= 3.22.0-160000.1.1
  • libwinpr3-3 >= 3.22.0-160000.1.1
  • winpr-devel >= 3.22.0-160000.1.1

Status of this issue by product and package

Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification. The updates are grouped by state of their lifecycle. SUSE product lifecycles are documented on the lifecycle page.

Product(s) Source package State
Products under general support and receiving all security fixes.
SUSE Linux Enterprise Desktop 15 SP7 freerdp Released
SUSE Linux Enterprise Desktop 15 SP7 freerdp2 Ask maintainer
SUSE Linux Enterprise Module for Package Hub 15 SP7 freerdp Released
SUSE Linux Enterprise Module for Package Hub 15 SP7 freerdp2 Ask maintainer
SUSE Linux Enterprise Server 15 SP7 freerdp Released
SUSE Linux Enterprise Server 15 SP7 freerdp2 Ask maintainer
SUSE Linux Enterprise Server 16.0 freerdp In progress
SUSE Linux Enterprise Server 16.1 freerdp Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP7 freerdp Released
SUSE Linux Enterprise Server for SAP Applications 15 SP7 freerdp2 Ask maintainer
SUSE Linux Enterprise Server for SAP applications 16.0 freerdp Released
SUSE Linux Enterprise Server for SAP applications 16.1 freerdp Affected
SUSE Linux Enterprise Workstation Extension 15 SP7 freerdp Released
SUSE Linux Enterprise Workstation Extension 15 SP7 freerdp2 Ask maintainer
Products under Long Term Service Pack support and receiving important and critical security fixes.
SUSE Linux Enterprise Server 12 SP5 freerdp Ask maintainer
SUSE Linux Enterprise Server 12 SP5-LTSS freerdp Ask maintainer
SUSE Linux Enterprise Server 12 SP5-LTSS Extended Security freerdp Ask maintainer
SUSE Linux Enterprise Server 15 SP4 freerdp Ask maintainer
SUSE Linux Enterprise Server 15 SP5 freerdp Ask maintainer
SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 freerdp Ask maintainer
SUSE Linux Enterprise Server for SAP Applications 12 SP5 freerdp Ask maintainer
Products past their end of life and not receiving proactive updates anymore.
SUSE Linux Enterprise Desktop 12 SP2 freerdp Ask maintainer
SUSE Linux Enterprise Desktop 12 SP3 freerdp Ask maintainer
SUSE Linux Enterprise Desktop 12 SP4 freerdp Ask maintainer
SUSE Linux Enterprise Desktop 15 SP4 freerdp Ask maintainer
SUSE Linux Enterprise Desktop 15 SP5 freerdp Ask maintainer
SUSE Linux Enterprise Module for Package Hub 15 SP4 freerdp Ask maintainer
SUSE Linux Enterprise Module for Package Hub 15 SP5 freerdp Ask maintainer
SUSE Linux Enterprise Module for Package Hub 15 SP6 freerdp Ask maintainer
SUSE Linux Enterprise Server 12 SP2 freerdp Ask maintainer
SUSE Linux Enterprise Server 12 SP3 freerdp Ask maintainer
SUSE Linux Enterprise Server 12 SP4 freerdp Ask maintainer
SUSE Linux Enterprise Server for SAP Applications 12 SP2 freerdp Ask maintainer
SUSE Linux Enterprise Server for SAP Applications 12 SP3 freerdp Ask maintainer
SUSE Linux Enterprise Server for SAP Applications 12 SP4 freerdp Ask maintainer
SUSE Linux Enterprise Server for SAP Applications 15 SP4 freerdp Ask maintainer
SUSE Linux Enterprise Server for SAP Applications 15 SP5 freerdp Ask maintainer
SUSE Linux Enterprise Software Development Kit 12 SP2 freerdp Ask maintainer
SUSE Linux Enterprise Software Development Kit 12 SP3 freerdp Ask maintainer
SUSE Linux Enterprise Software Development Kit 12 SP4 freerdp Ask maintainer
SUSE Linux Enterprise Software Development Kit 12 SP5 freerdp Ask maintainer
SUSE Linux Enterprise Workstation Extension 12 SP2 freerdp Ask maintainer
SUSE Linux Enterprise Workstation Extension 12 SP3 freerdp Ask maintainer
SUSE Linux Enterprise Workstation Extension 12 SP4 freerdp Ask maintainer
SUSE Linux Enterprise Workstation Extension 12 SP5 freerdp Ask maintainer
SUSE Linux Enterprise Workstation Extension 15 SP4 freerdp Ask maintainer
SUSE Linux Enterprise Workstation Extension 15 SP5 freerdp Ask maintainer
openSUSE Leap 15.4 freerdp Ask maintainer
openSUSE Leap 15.5 freerdp Ask maintainer

SUSE Timeline for this CVE

CVE page created: Wed Jan 14 20:05:58 2026
CVE page last modified: Fri Mar 13 13:12:44 2026