CVE-2026-22851
Fixed in a distro release EPSS <1%CVSS 6.9
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.
Products: FreeRDP
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Amazon Linux 2023 | freerdp | 2:3.6.3-1.amzn2023.0.3 |
| Amazon Linux 2023 | freerdp-devel | 2:3.6.3-1.amzn2023.0.3 |
| Amazon Linux 2023 | freerdp-libs | 2:3.6.3-1.amzn2023.0.3 |
| Amazon Linux 2023 | freerdp-server | 2:3.6.3-1.amzn2023.0.3 |
| Amazon Linux 2023 | libwinpr | 2:3.6.3-1.amzn2023.0.3 |
| Amazon Linux 2023 | libwinpr-devel | 2:3.6.3-1.amzn2023.0.3 |
| Chainguard | freerdp-dev | no fix |
| Chainguard | freerdp-libs | no fix |
| Debian 12 | freerdp2 | no fix |
| Debian 13 | freerdp3 | 3.15.0+dfsg-2.1+deb13u1 |
| Debian 14 | freerdp3 | 3.20.2+dfsg-1 |
| SUSE Linux Enterprise Module for Package Hub 15 SP7 | freerdp | 3.10.3-150700.3.3.1 |
| SUSE Linux Enterprise Workstation Extension 15 SP7 | freerdp | 3.10.3-150700.3.3.1 |
| Ubuntu 16.04 LTS | freerdp | no fix |
| Ubuntu 18.04 LTS | freerdp | no fix |
| Ubuntu 22.04 LTS | freerdp2 | no fix |
| Ubuntu 24.04 LTS | freerdp3 | 3.5.1+dfsg1-0ubuntu1.4 |
| Ubuntu 25.10 | freerdp3 | 3.16.0+dfsg-2ubuntu0.3 |
| Ubuntu 26.04 LTS | freerdp3 | 3.20.2+dfsg-1 |
| Ubuntu Pro 18.04 LTS | freerdp2 | no fix |
| Ubuntu Pro 20.04 LTS | freerdp2 | no fix |
| Ubuntu Pro 24.04 LTS | freerdp2 | no fix |
| Wolfi | freerdp-dev | no fix |
| Wolfi | freerdp-libs | no fix |
| openSUSE Leap 16.0 | freerdp | 3.22.0-160000.1.1 |
| openSUSE Tumbleweed | freerdp | 3.20.2-1.1 |