OSV-2021-897

Heap-buffer-overflow in ZSTD_decompressMultiFrame

No scoreFix available

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=35537

Crash type: Heap-buffer-overflow READ {*}
Crash state:
ZSTD_decompressMultiFrame
ZSTD_decompress_usingDDict
blosc_d

What each source reports

OSV No score

Heap-buffer-overflow in ZSTD_decompressMultiFrame

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=35537

Crash type: Heap-buffer-overflow READ {*}
Crash state:
ZSTD_decompressMultiFrame
ZSTD_decompress_usingDDict
blosc_d

Record: OSV-2021-897
Updated: 2026-11-02

Affected packages

Affected packages
Package	Affected	Fixed
`c-blosc2` OSS-Fuzz	Listed versions, plus commit ranges v2.0.0v2.0.0-rc2v2.0.0.rc1v2.0.1v2.0.2 Show 4 moreShow less v2.0.3v2.0.4v2.1.0v2.1.1	None known

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

OSV-2021-897 is a vulnerability with no CVSS score yet in c-blosc2, published June 26, 2021. No source lists public exploit code. A source reports a fix.

References

bugs.chromium.org/p/oss-fuzz/issues/detail?id=35537