Nixpkgs security tracker

Login with GitHub

⚠️ You are using a production deployment that is still only suitable for demo purposes. Any work done in this might be wiped later without notice.

Suggestion detail

Untriaged

Permalink CVE-2026-23884

created 2 months, 4 weeks ago

Heap-use-after-free in gdi_set_bounds

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.21.0, offscreen bitmap deletion leaves `gdi->drawing` pointing to freed memory, causing UAF when related update packets arrive. A malicious server can trigger a client‑side use after free, causing a crash (DoS) and potential heap corruption with code‑execution risk depending on allocator behavior and surrounding heap layout. Version 3.21.0 contains a patch for the issue.

References

https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-cfgj-vc84-f3pp x_refsource_CONFIRM
https://github.com/FreeRDP/FreeRDP/blob/3370e30e92a021eb680892dda14d642bc8b8727c/libfreerdp/cache/offscreen.c#L114-L122 x_refsource_MISC
https://github.com/FreeRDP/FreeRDP/blob/3370e30e92a021eb680892dda14d642bc8b8727c/libfreerdp/cache/offscreen.c#L87-L91 x_refsource_MISC
https://github.com/FreeRDP/FreeRDP/releases/tag/3.21.0 x_refsource_MISC

Affected products

FreeRDP

==< 3.21.0

Matching in nixpkgs

pkgs.freerdp

Remote Desktop Protocol Client

nixos-25.11 3.17.2
- nixpkgs-25.11-darwin 3.17.2

pkgs.freerdpUnstable

Remote Desktop Protocol Client

nixos-unstable 3.16.0
- nixpkgs-unstable 3.16.0
- nixos-unstable-small 3.16.0

Package maintainers

@peterhoeg Peter Hoeg <peter@hoeg.com>