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CVE-2026-22851

Published: Jan 14, 2026

Modified: Jan 14, 2026

PUBLISHED

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.

Vendor	Product	Versions
FreeRDP	FreeRDP	affected `< 3.20.1`

Weaknesses (CWE)

References

https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-8g87-6pvc-wh99

x_refsource_CONFIRM

https://github.com/FreeRDP/FreeRDP/releases/tag/3.20.1

x_refsource_MISC

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