OSV-2020-2068

Heap-buffer-overflow in WelsDec::Update8x8RefIdx

No scoreFix available

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=26328

Crash type: Heap-buffer-overflow WRITE 1
Crash state:
WelsDec::Update8x8RefIdx
WelsDec::ParseInterBMotionInfoCabac
WelsDec::WelsDecodeMbCabacBSliceBaseMode0

What each source reports

OSV No score

Heap-buffer-overflow in WelsDec::Update8x8RefIdx

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=26328

Crash type: Heap-buffer-overflow WRITE 1
Crash state:
WelsDec::Update8x8RefIdx
WelsDec::ParseInterBMotionInfoCabac
WelsDec::WelsDecodeMbCabacBSliceBaseMode0

Record: OSV-2020-2068
Updated: 2026-11-02

Affected packages

Affected packages
Package	Affected	Fixed
`openh264` OSS-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

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-2020-2068 is a vulnerability with no CVSS score yet in openh264, published October 15, 2020. No source lists public exploit code. A source reports a fix.

References

bugs.chromium.org/p/oss-fuzz/issues/detail?id=26328