OSV-2021-618
Heap-buffer-overflow in OT::AnchorFormat1* hb_serialize_context_t::embed<OT::AnchorFormat1>
No scoreFix available
OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=33031
Crash type: Heap-buffer-overflow READ 6
Crash state:
OT::AnchorFormat1* hb_serialize_context_t::embed<OT::AnchorFormat1>
OT::AnchorFormat1::copy
OT::Anchor::subset
What each source reports
OSV No score
Heap-buffer-overflow in OT::AnchorFormat1* hb_serialize_context_t::embed<OT::AnchorFormat1>
OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=33031
Crash type: Heap-buffer-overflow READ 6
Crash state:
OT::AnchorFormat1* hb_serialize_context_t::embed<OT::AnchorFormat1>
OT::AnchorFormat1::copy
OT::Anchor::subset
- Record
OSV-2021-618- Updated
- 2026-11-02
Affected packages
| Package | Affected | Fixed |
|---|---|---|
harfbuzzOSS-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-2021-618 is a vulnerability with no CVSS score yet in harfbuzz, published April 9, 2021. No source lists public exploit code. A source reports a fix.