OSV-2021-1143 UNKNOWN WRITE in QtPrivate::QPodArrayOps<QPainterPath::Element>::copyAppend
A memory corruption vulnerability in the Qt library's QPainterPath handling can lead to application crashes when processing malformed data.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Not stated
- Victim action needed
- Not needed
- Fix
- None listed
What is OSV-2021-1143?
OSV-2021-1143 is a memory corruption vulnerability in qt, published on 19 Aug 2021.
Official description
OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=37306
This is the same issue as OSV-2021-1121 which it replaced after that one was closed wrongly.
Crash type: UNKNOWN WRITE
Crash state:
QtPrivate::QPodArrayOps<QPainterPath::Element>::copyAppend
QtPrivate::QCommonArrayOps<QPainterPath::Element>::growAppend
QList<QPainterPath::Element>::append
Which versions are affected by OSV-2021-1143?
1 open source package ship an affected version, including qt.
| Package | Affected | Fixed in |
|---|---|---|
qt OSS-Fuzz | All versions | None |
How do I fix OSV-2021-1143?
No fix has been published for OSV-2021-1143 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is OSV-2021-1143 being exploited?
There is no known exploitation of OSV-2021-1143 in the wild and no public exploit code.