OSV-2021-1227
Heap-buffer-overflow in blosclz_compress
No scoreFix available
OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=38313
Crash type: Heap-buffer-overflow WRITE 1
Crash state:
blosclz_compress
blosc_c
do_job
What each source reports
OSV No score
Heap-buffer-overflow in blosclz_compress
OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=38313
Crash type: Heap-buffer-overflow WRITE 1
Crash state:
blosclz_compress
blosc_c
do_job
- Record
OSV-2021-1227- Updated
- 2026-11-02
Affected packages
| Package | Affected | Fixed |
|---|---|---|
c-bloscOSS-Fuzz |
Commit ranges | Not evaluated |
Not evaluated means the source gave git commits or a range we can't read, so we can't tell which releases are affected. A fixed version beside it is the source’s own claim.
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
OSV-2021-1227 is a vulnerability with no CVSS score yet in c-blosc, published September 11, 2021. No source lists public exploit code. A source reports a fix.