CVE-2026-25959

Publication date 25 February 2026

Last updated 18 March 2026

Ubuntu priority

Description

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, `xf_cliprdr_provide_data_` passes freed `pDstData` to `XChangeProperty` because the cliprdr channel thread calls `xf_cliprdr_server_format_data_response` which converts and uses the clipboard data without holding any lock, while the X11 event thread concurrently calls `xf_cliprdr_clear_cached_data` → `HashTable_Clear` which frees the same data via `xf_cached_data_free`, triggering a heap use after free. Version 3.23.0 fixes the issue.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
freerdp	25.10 questing	Not in release
	24.04 LTS noble	Not in release
	22.04 LTS jammy	Not in release
	18.04 LTS bionic	Needs evaluation
	16.04 LTS xenial	Needs evaluation
freerdp2	25.10 questing	Not in release
	24.04 LTS noble	Needs evaluation
	22.04 LTS jammy	Needs evaluation
	20.04 LTS focal	Needs evaluation
	18.04 LTS bionic	Needs evaluation
freerdp3	25.10 questing	Fixed 3.16.0+dfsg-2ubuntu0.3
	24.04 LTS noble	Fixed 3.5.1+dfsg1-0ubuntu1.4
	22.04 LTS jammy	Not in release

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
freerdp3	Upstream: d3e8b3b

References

Related Ubuntu Security Notices (USN)

USN-8105-1
FreeRDP vulnerabilities
18 March 2026