OSV-2021-220
Heap-buffer-overflow in rans_uncompress_to_4x16
No scoreFix available
OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=29795
Crash type: Heap-buffer-overflow READ 1
Crash state:
rans_uncompress_to_4x16
rans_uncompress_4x16
cram_uncompress_block
What each source reports
OSV No score
Heap-buffer-overflow in rans_uncompress_to_4x16
OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=29795
Crash type: Heap-buffer-overflow READ 1
Crash state:
rans_uncompress_to_4x16
rans_uncompress_4x16
cram_uncompress_block
- Record
OSV-2021-220- Updated
- 2026-11-02
Affected packages
| Package | Affected | Fixed |
|---|---|---|
htslibOSS-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-2021-220 is a vulnerability with no CVSS score yet in htslib, published January 23, 2021. No source lists public exploit code. A source reports a fix.