CVE-2026-25952

Description

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, `xf_SetWindowMinMaxInfo` dereferences a freed `xfAppWindow` pointer because `xf_rail_get_window` in `xf_rail_server_min_max_info` 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.

PUBLISHED Reserved 2026-02-09 | Published 2026-02-25 | Updated 2026-02-25 | Assigner GitHub_M

Problem types

CWE-416: Use After Free

Product status

References

github.com/...reeRDP/security/advisories/GHSA-cgqm-cwjg-7w9x

github.com/...ommit/1994e9844212a6dfe0ff12309fef520e888986b5

github.com/...2b4806c2a5c583ca39dd9ef1e/client/X11/xf_rail.c

github.com/...2b4806c2a5c583ca39dd9ef1e/client/X11/xf_rail.c

github.com/...2b4806c2a5c583ca39dd9ef1e/client/X11/xf_rail.c

github.com/...2b4806c2a5c583ca39dd9ef1e/client/X11/xf_rail.c

github.com/...2b4806c2a5c583ca39dd9ef1e/client/X11/xf_rail.c

github.com/...4806c2a5c583ca39dd9ef1e/client/X11/xf_window.c

github.com/...4806c2a5c583ca39dd9ef1e/client/X11/xf_window.c

github.com/...4806c2a5c583ca39dd9ef1e/client/X11/xf_window.c

github.com/...4806c2a5c583ca39dd9ef1e/client/X11/xf_window.c

cve.org (CVE-2026-25952)

nvd.nist.gov (CVE-2026-25952)

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