FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.28.0, rdpsnd_server_recv_formats in channels/rdpsnd/server/rdpsnd_main.c frees context->client_formats on a malformed Client Audio Formats PDU without clearing the owning pointer or num_client_formats. An authenticated RDP client can trigger an error such as a cbSize larger than the remaining record, leave the dangling pointer in the server context, and cause rdpsnd_server_context_free to free the same allocation again at session teardown. This reliably terminates the server and can create allocator-dependent heap corruption. This issue is fixed in version 3.28.0.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon_linux_2023 | — | Upgrade libwinprUpgrade freerdpUpgrade libwinpr-develUpgrade libwinpr-debuginfoUpgrade freerdp-debuginfoUpgrade freerdp-server-debuginfoUpgrade freerdp-libsUpgrade freerdp-libs-debuginfoUpgrade freerdp-develUpgrade freerdp-debugsourceUpgrade freerdp-server | Sep 30, 2026 | Aug 19, 2026 |
| Redhat_linux | — | Upgrade libwinprUpgrade freerdp-server-debuginfoUpgrade freerdpUpgrade freerdp-develUpgrade freerdp-debuginfoUpgrade freerdp-serverUpgrade libwinpr-develUpgrade freerdp-libsUpgrade freerdp-debugsourceUpgrade freerdp-libs-debuginfoUpgrade libwinpr-debuginfo | Aug 24, 2026 | Aug 19, 2026 |
| Rocky_linux | — | Upgrade freerdp-server-debuginfoUpgrade libwinprUpgrade freerdp-debuginfoUpgrade freerdp-develUpgrade freerdp-libs-debuginfoUpgrade libwinpr-debuginfoUpgrade freerdp-libsUpgrade freerdp-serverUpgrade freerdp-debugsourceUpgrade freerdpUpgrade libwinpr-devel | Sep 3, 2026 | Sep 1, 2026 |
| Ubuntu | — | Upgrade freerdp3 | Aug 30, 2026 | Aug 20, 2026 |
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