OSV-2021-1645

UNKNOWN READ in ndlz4_decompress

No scoreFix available

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=41636

Crash type: UNKNOWN READ
Crash state:
ndlz4_decompress
blosc_d
do_job

What each source reports

OSV No score

UNKNOWN READ in ndlz4_decompress

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=41636

Crash type: UNKNOWN READ
Crash state:
ndlz4_decompress
blosc_d
do_job

Record: OSV-2021-1645
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-2021-1645 is a vulnerability with no CVSS score yet in c-blosc2, published December 4, 2021. No source lists public exploit code. A source reports a fix.

References

bugs.chromium.org/p/oss-fuzz/issues/detail?id=41636