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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| FreeRDP | FreeRDP | < 3.20.1 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | freerdp3 | 3.20.2+dfsg-1 | — |
| Debian 13 | freerdp3 | 3.15.0+dfsg-2.1+deb13u1 | — |
| Debian 12 | freerdp2 | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.04 LTS | freerdp3 | 3.20.2+dfsg-1 | — |
| Ubuntu 25.10 | freerdp3 | 3.16.0+dfsg-2ubuntu0.3 | USN-8105-1 |
| Ubuntu 24.04 LTS | freerdp3 | 3.5.1+dfsg1-0ubuntu1.4 | USN-8105-1 |
| Ubuntu 22.04 LTS | freerdp2 | No fix yet | — |
| Ubuntu 18.04 LTS | freerdp | No fix yet | — |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | freerdp | No fix yet | — |
| Ubuntu Pro 24.04 LTS | freerdp2 | No fix yet | — |
| Ubuntu Pro 20.04 LTS | freerdp2 | No fix yet | — |
| Ubuntu Pro 18.04 LTS | freerdp2 | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | freerdp | 3.10.3-150700.3.3.1 | SUSE-SU-2026:0345-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | freerdp | 3.20.2-1.1 | openSUSE-SU-2026:10059-1 |
| openSUSE Leap 16.0 | freerdp | 3.22.0-160000.1.1 | openSUSE-SU-2026:20339-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.23 | freerdp | 3.22.0-r0 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | freerdp +5 | 2:3.6.3-1.amzn2023.0.3 | ALAS2023-2026-1433 |
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | freerdp-dev +1 | No fix yet | — |
Advisories 6
- USN-8105-1 freerdp3 vulnerabilities Ubuntu Security Notices (USN) · Oct 27, 2026
- WID-SEC-2026-0111 FreeRDP: Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 28, 2026
- openSUSE-SU-2026:20339-1 Security update for freerdp SUSE / openSUSE Security Updates · Mar 23, 2026
- openSUSE-SU-2026:10059-1 freerdp-3.20.2-1.1 on GA media SUSE / openSUSE Security Updates · Mar 23, 2026
- ALAS2023-2026-1433 Moderate: freerdp security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Feb 18, 2026
- SUSE-SU-2026:0345-1 Security update for freerdp SUSE / openSUSE Security Updates · Feb 4, 2026