Nixpkgs security tracker

Untriaged

Permalink CVE-2026-25954

created 1 month, 3 weeks ago

FreeRDP has heap-use-after-free in xf_rail_server_local_move_size

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, `xf_rail_server_local_move_size` dereferences a freed `xfAppWindow` pointer because `xf_rail_get_window` returns an unprotected pointer from the `railWindows` hash table, and the main thread can concurrently delete the window (via a window delete order) while the RAIL channel thread is still using the pointer. Version 3.23.0 fixes the issue.

References

https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-cc88-4j37-mw6j x_refsource_CONFIRM
https://github.com/FreeRDP/FreeRDP/commit/1994e9844212a6dfe0ff12309fef520e888986b5 x_refsource_MISC
https://github.com/FreeRDP/FreeRDP/blob/5c7aae27d0417b42b4806c2a5c583ca39dd9ef1e/client/X11/xf_rail.c#L1076 x_refsource_MISC
https://github.com/FreeRDP/FreeRDP/blob/5c7aae27d0417b42b4806c2a5c583ca39dd9ef1e/client/X11/xf_rail.c#L1133 x_refsource_MISC
https://github.com/FreeRDP/FreeRDP/blob/5c7aae27d0417b42b4806c2a5c583ca39dd9ef1e/client/X11/xf_rail.c#L1230-L1238 x_refsource_MISC
https://github.com/FreeRDP/FreeRDP/blob/5c7aae27d0417b42b4806c2a5c583ca39dd9ef1e/client/X11/xf_rail.c#L1347 x_refsource_MISC
https://github.com/FreeRDP/FreeRDP/blob/5c7aae27d0417b42b4806c2a5c583ca39dd9ef1e/client/X11/xf_rail.c#L1350-L1359 x_refsource_MISC
https://github.com/FreeRDP/FreeRDP/blob/5c7aae27d0417b42b4806c2a5c583ca39dd9ef1e/client/X11/xf_rail.c#L647 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