CVE-2026-22851 FreeRDP RDPGFX ResetGraphics race leads to use-after-free in SDL client (sdl->primary)

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 SDLSurface is accessed after it has been...

CVE-2026-22851 FreeRDP RDPGFX ResetGraphics race leads to use-after-free in SDL client (sdl->primary)

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 SDLSurface is accessed after it has been...