Описание
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.24.0, division by zero in MS-ADPCM and IMA-ADPCM decoders when nBlockAlign is 0, leading to a crash. In libfreerdp/codec/dsp.c, both ADPCM decoders use size % block_size where block_size = context->common.format.nBlockAlign. The nBlockAlign value comes from the Server Audio Formats PDU on the RDPSND channel. The value 0 is not validated anywhere before reaching the decoder. When nBlockAlign = 0, the modulo operation causes a SIGFPE (floating point exception) crash. This vulnerability is fixed in 3.24.0.
A division by zero flaw has been discovered in FreeRDP. This division by zero exists in the MS-ADPCM and IMA-ADPCM decoders when nBlockAlign is 0, leading to a crash. In libfreerdp/codec/dsp.c, both ADPCM decoders use size % block_size where block_size = context->common.format.nBlockAlign. The nBlockAlign value comes from the Server Audio Formats PDU on the RDPSND channel. The value 0 is not validated anywhere before reaching the decoder. When nBlockAlign = 0, the modulo operation causes a SIGFPE (floating point exception) crash.
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
6.5 Medium
CVSS3
Связанные уязвимости
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.24.0, division by zero in MS-ADPCM and IMA-ADPCM decoders when nBlockAlign is 0, leading to a crash. In libfreerdp/codec/dsp.c, both ADPCM decoders use size % block_size where block_size = context->common.format.nBlockAlign. The nBlockAlign value comes from the Server Audio Formats PDU on the RDPSND channel. The value 0 is not validated anywhere before reaching the decoder. When nBlockAlign = 0, the modulo operation causes a SIGFPE (floating point exception) crash. This vulnerability is fixed in 3.24.0.
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.24.0, division by zero in MS-ADPCM and IMA-ADPCM decoders when nBlockAlign is 0, leading to a crash. In libfreerdp/codec/dsp.c, both ADPCM decoders use size % block_size where block_size = context->common.format.nBlockAlign. The nBlockAlign value comes from the Server Audio Formats PDU on the RDPSND channel. The value 0 is not validated anywhere before reaching the decoder. When nBlockAlign = 0, the modulo operation causes a SIGFPE (floating point exception) crash. This vulnerability is fixed in 3.24.0.
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior ...
Уязвимость RDP-клиента FreeRDP, связанная с отсутствием проверки деления на ноль, позволяющая нарушителю вызвать отказ в обслуживании
EPSS
6.5 Medium
CVSS3