OSV-2021-1663

Heap-buffer-overflow in ndlz4_decompress

No scoreFix available

OSV-2021-1663 is a vulnerability with no CVSS score yet in c-blosc2, published December 10, 2021. No source lists public exploit code. A source reports a fix.

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=42131

Crash type: Heap-buffer-overflow WRITE {*}
Crash state:
ndlz4_decompress
blosc_d
do_job

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=42131

Crash type: Heap-buffer-overflow WRITE {*}
Crash state:
ndlz4_decompress
blosc_d
do_job

Record: OSV-2021-1663
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
When	Changed	Sources
2026-11-02	created	OSV

References

bugs.chromium.org/p/oss-fuzz/issues/detail?id=42131