Bug 2442767 (CVE-2026-25959) - CVE-2026-25959 freerdp: FreeRDP: Denial of Service via heap use-after-free in clipboard handling
Summary: CVE-2026-25959 freerdp: FreeRDP: Denial of Service via heap use-after-free in...
Keywords:
Status: NEW
Alias: CVE-2026-25959
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2442809 2442813 2442818 2442825 2442838
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-02-25 21:05 UTC by OSIDB Bzimport
Modified: 2026-02-25 23:14 UTC (History)
0 users

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Description OSIDB Bzimport 2026-02-25 21:05:26 UTC 
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.
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