Описание
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, rail_window_free dereferences a freed xfAppWindow pointer during HashTable_Free cleanup because xf_rail_window_common calls free(appWindow) on title allocation failure without first removing the entry from the railWindows hash table, leaving a dangling pointer that is freed again on disconnect. Version 3.23.0 fixes the vulnerability.
A flaw was found in FreeRDP, a free implementation of the Remote Desktop Protocol. This double free vulnerability occurs during the cleanup process when a remote desktop session disconnects. Specifically, if a title allocation fails, a pointer to an application window is freed but not removed from a tracking table. Later, during disconnection, the same pointer is freed again, which can lead to a crash and result in a denial of service.
Меры по смягчению последствий
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| Red Hat Enterprise Linux 6 | freerdp | Affected | ||
| Red Hat Enterprise Linux 10 | freerdp | Fixed | RHSA-2026:16014 | 11.05.2026 |
| Red Hat Enterprise Linux 10 | freerdp | Fixed | RHSA-2026:19142 | 19.05.2026 |
| Red Hat Enterprise Linux 10.0 Extended Update Support | freerdp | Fixed | RHSA-2026:20605 | 26.05.2026 |
| Red Hat Enterprise Linux 7 Extended Lifecycle Support | freerdp | Fixed | RHSA-2026:20546 | 26.05.2026 |
| Red Hat Enterprise Linux 8 | freerdp | Fixed | RHSA-2026:16019 | 11.05.2026 |
| Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support | freerdp | Fixed | RHSA-2026:19811 | 20.05.2026 |
| Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On | freerdp | Fixed | RHSA-2026:19811 | 20.05.2026 |
| Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support | freerdp | Fixed | RHSA-2026:16814 | 13.05.2026 |
| Red Hat Enterprise Linux 8.6 Telecommunications Update Service | freerdp | Fixed | RHSA-2026:16814 | 13.05.2026 |
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Дополнительная информация
Статус:
EPSS
5.3 Medium
CVSS3
Связанные уязвимости
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, `rail_window_free` dereferences a freed `xfAppWindow` pointer during `HashTable_Free` cleanup because `xf_rail_window_common` calls `free(appWindow)` on title allocation failure without first removing the entry from the `railWindows` hash table, leaving a dangling pointer that is freed again on disconnect. Version 3.23.0 fixes the vulnerability.
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, `rail_window_free` dereferences a freed `xfAppWindow` pointer during `HashTable_Free` cleanup because `xf_rail_window_common` calls `free(appWindow)` on title allocation failure without first removing the entry from the `railWindows` hash table, leaving a dangling pointer that is freed again on disconnect. Version 3.23.0 fixes the vulnerability.
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior ...
Уязвимость функции rail_window_free() RDP-клиента FreeRDP, позволяющая нарушителю вызвать отказ в обслуживании
EPSS
5.3 Medium
CVSS3