A heap-buffer-overflow vulnerability exists in the c-blosc2 library within the ZSTD_decompressSequencesLong_bmi2 function. This issue was identified by OSS-Fuzz and involves an out-of-bounds read of 8 bytes during decompression sequences. The vulnerability affects multiple versions of c-blosc2 up to and including version 3.2.0 and some later commits. No CVSS score is provided, but the severity is assessed as medium.