OSV-2021-1755

Heap-buffer-overflow in ndlz4_decompress

No scoreFix available

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=42924

Crash type: Heap-buffer-overflow READ 4
Crash state:
ndlz4_decompress
ndlz_decompress
blosc_d

What each source reports

OSV No score

Heap-buffer-overflow in ndlz4_decompress

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=42924

Crash type: Heap-buffer-overflow READ 4
Crash state:
ndlz4_decompress
ndlz_decompress
blosc_d

Record: OSV-2021-1755
Updated: 2026-11-02

Affected packages

Affected packages
Package	Affected	Fixed
`c-blosc2` OSS-Fuzz	Listed versions, plus commit ranges v2.0.0v2.0.1v2.0.2v2.0.3v2.0.4v2.1.0	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-2021-1755 is a vulnerability with no CVSS score yet in c-blosc2, published December 25, 2021. No source lists public exploit code. A source reports a fix.

References

bugs.chromium.org/p/oss-fuzz/issues/detail?id=42924