Description
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.24.0, a size_t underflow in the IMA-ADPCM and MS-ADPCM audio decoders leads to heap-buffer-overflow write via the RDPSND audio channel. In libfreerdp/codec/dsp.c, the IMA-ADPCM and MS-ADPCM decoders subtract block header sizes from a size_t variable without checking for underflow. When nBlockAlign (received from the server) is set such that size % block_size == 0 triggers the header parsing at a point where size is smaller than the header (4 or 8 bytes), the subtraction wraps size to ~SIZE_MAX. The while (size > 0) loop then continues for an astronomical number of iterations. This vulnerability is fixed in 3.24.0.
INFO
Published Date :
2026-03-13T17:35:17.411Z
Last Modified :
2026-03-16T17:02:52.737Z
Source :
GitHub_M
AFFECTED PRODUCTS
The following products are affected by CVE-2026-31883 vulnerability.
| Vendors | Products |
|---|---|
| Freerdp |
|
REFERENCES
Here, you will find a curated list of external links that provide in-depth information to CVE-2026-31883.
