Nixpkgs Security Tracker

Login with GitHub

Details of issue NIXPKGS-2026-0047

NIXPKGS-2026-0047
published on 20 Jan 2026
Permalink CVE-2026-23884
updated 3 weeks, 2 days ago by @LeSuisse Activity log
  • Created automatic suggestion 3 weeks, 2 days ago
  • @LeSuisse accepted 3 weeks, 2 days ago
  • @LeSuisse published on GitHub 3 weeks, 2 days 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.

Affected products

FreeRDP
  • ==< 3.21.0

Matching in nixpkgs

Package maintainers

Upstream advisory: https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-cfgj-vc84-f3pp