CVE-2021-45930

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.5% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2022-01-01 · updated 2026-06-17
Weakness: CWE-787

Description

Qt SVG in Qt 5.0.0 through 5.15.2 and 6.0.0 through 6.2.1 has an out-of-bounds write in QtPrivate::QCommonArrayOps<QPainterPath::Element>::growAppend (called from QPainterPath::addPath and QPathClipper::intersect).

Affected products

Debian Linux: 9.0
Fedoraproject Fedora: 34, 35
Qtsvg: from 5.0.0 through 5.15.2; from 6.0.0 through 6.2.1

References

https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=37025
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=37306
https://github.com/google/oss-fuzz-vulns/blob/main/vulns/qt/OSV-2021-1121.yaml
https://github.com/qt/qtsvg/commit/36cfd9efb9b22b891adee9c48d30202289cfa620
https://github.com/qt/qtsvg/commit/79bb9f51fa374106a612d17c9d98d35d807be670
https://github.com/qt/qtsvg/commit/a3b753c2d077313fc9eb93af547051b956e383fc
https://lists.debian.org/debian-lts-announce/2022/01/msg00020.html
https://lists.debian.org/debian-lts-announce/2022/01/msg00022.html
https://lists.debian.org/debian-lts-announce/2023/08/msg00028.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4GKOKVCSDZSOWWR3HOW5XUIUJC4MKQY5/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GZIXNSX7FV733TWTTLY6FHSH3SCNQKKD/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/V75XNX4GDB64N5BSOAN474RUXXS5OHRU/

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