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FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, a missing bounds check in `smartcard_unpack_read_size_align()` (`libfreerdp/utils/smartcard_pack.c:1703`) allows a malicious RDP server to crash the FreeRDP client via a reachable `WINPR_ASSERT` → `abort()`. The crash occurs in upstream builds where `WITH_VERBOSE_WINPR_ASSERT=ON` (default in FreeRDP 3.22.0 / current WinPR CMake defaults). Smartcard redirection must be explicitly enabled by the user (e.g., `xfreerdp /smartcard`; `/smartcard-logon` implies `/smartcard`). Version 3.23.0 fixes the issue.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade freerdpUpgrade libwinpr-develUpgrade libwinprUpgrade freerdp-develUpgrade freerdp-libsUpgrade freerdp-debuginfo | May 20, 2026 | May 20, 2026 |
| Amazon_linux_2023 | — | Upgrade freerdp-libs-debuginfoUpgrade freerdp-server-debuginfoUpgrade libwinprUpgrade libwinpr-debuginfoUpgrade freerdp-libsUpgrade freerdp-serverUpgrade freerdp-develUpgrade freerdpUpgrade freerdp-debuginfoUpgrade libwinpr-develUpgrade freerdp-debugsource | Apr 7, 2026 | Feb 25, 2026 |
| Debian | — | Upgrade freerdp3 | Jul 23, 2026 | Jul 23, 2026 |
| Redhat_linux | — | No solution exists | Jul 17, 2026 | Feb 25, 2026 |
| Ubuntu | — | Upgrade libfreerdp3-3 | Mar 19, 2026 | Feb 25, 2026 |
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