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.
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Affected Vendors & Products
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History
Wed, 14 Jan 2026 21:15:00 +0000
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ssvc
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Wed, 14 Jan 2026 18:00:00 +0000
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| 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. | |
| Title | FreeRDP RDPGFX ResetGraphics race leads to use-after-free in SDL client (sdl->primary) | |
| Weaknesses | CWE-362 CWE-416 |
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cvssV4_0
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-01-14T21:03:36.764Z
Reserved: 2026-01-12T16:20:16.745Z
Link: CVE-2026-22851
Updated: 2026-01-14T21:03:33.744Z
Status : Received
Published: 2026-01-14T18:16:42.490
Modified: 2026-01-14T18:16:42.490
Link: CVE-2026-22851
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OpenCVE Enrichment
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