Nixpkgs security tracker

Untriaged

Permalink CVE-2026-25955

created 1 month, 3 weeks ago

FreeRDP has heap-use-after-free in xf_AppUpdateWindowFromSurface (stale XImage)

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, `xf_AppUpdateWindowFromSurface` reuses a cached `XImage` whose `data` pointer references a freed RDPGFX surface buffer, because `gdi_DeleteSurface` frees `surface->data` without invalidating the `appWindow->image` that aliases it. Version 3.23.0 fixes the issue.

References

https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-4g54-x8v7-559x x_refsource_CONFIRM
https://github.com/FreeRDP/FreeRDP/commit/169d358734509e82663a0d6a0085ae726d439d8e x_refsource_MISC
https://github.com/FreeRDP/FreeRDP/blob/5c7aae27d0417b42b4806c2a5c583ca39dd9ef1e/client/X11/xf_window.c#L1484-L1492 x_refsource_MISC
https://github.com/FreeRDP/FreeRDP/blob/5c7aae27d0417b42b4806c2a5c583ca39dd9ef1e/client/X11/xf_window.c#L1494-L1500 x_refsource_MISC
https://github.com/FreeRDP/FreeRDP/blob/5c7aae27d0417b42b4806c2a5c583ca39dd9ef1e/client/X11/xf_window.c#L1528 x_refsource_MISC
https://github.com/FreeRDP/FreeRDP/blob/5c7aae27d0417b42b4806c2a5c583ca39dd9ef1e/libfreerdp/gdi/gfx.c#L1224-L1227 x_refsource_MISC

Affected products

FreeRDP

==< 3.23.0

Matching in nixpkgs

pkgs.freerdp

Remote Desktop Protocol Client

nixos-unstable 3.22.0
- nixpkgs-unstable 3.22.0
- nixos-unstable-small 3.22.0
nixos-25.11 3.22.0
- nixos-25.11-small 3.22.0
- nixpkgs-25.11-darwin 3.22.0

Package maintainers

@peterhoeg Peter Hoeg <peter@hoeg.com>

Suggestion detail

References

Affected products

Matching in nixpkgs

pkgs.freerdp

Package maintainers