OSV-2021-847

Heap-buffer-overflow in frame_get_vlmetalayers

No scoreFix available

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=35086

Crash type: Heap-buffer-overflow READ {*}
Crash state:
frame_get_vlmetalayers
frame_to_schunk
blosc2_schunk_from_buffer

What each source reports

OSV No score

Heap-buffer-overflow in frame_get_vlmetalayers

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=35086

Crash type: Heap-buffer-overflow READ {*}
Crash state:
frame_get_vlmetalayers
frame_to_schunk
blosc2_schunk_from_buffer

Record: OSV-2021-847
Updated: 2026-11-02

Affected packages

Affected packages
Package	Affected	Fixed
`c-blosc2` OSS-Fuzz	Listed versions, plus commit ranges v2.0.0-rc2	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-2021-847 is a vulnerability with no CVSS score yet in c-blosc2, published June 10, 2021. No source lists public exploit code. A source reports a fix.

References

bugs.chromium.org/p/oss-fuzz/issues/detail?id=35086