Heap-buffer-overflow write in FFmpeg SANM decoding due to lack of bounds-checking in old_codec48

When decoding a frame for a SANM file (ANIM v0 variant), the decoded data can be larger than the buffer allocated for it. Frames encoded with codec 48 can specify their resolution (width x height). A buffer of appropriate size is allocated depending on the resolution. This codec can encode the frame contents using a run-length encoding algorithm. There are no checks that the decoded frame fits in the allocated buffer, leading to a heap-buffer-overflow. process_frame_obj initializes the buffers based on the frame resolution: We recommend upgrading to version 8.0 or beyond.

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跨界内存写

FFmpeg 安全漏洞

FFmpeg是FFmpeg团队的一套可录制、转换以及流化音视频的完整解决方案。 FFmpeg 8.0之前版本存在安全漏洞，该漏洞源于解码帧时未检查解码数据是否超出分配缓冲区，可能导致堆缓冲区溢出。

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