CVE-2021-45930

The Qt SVG module provides functionality for displaying SVG images in widget, and to create SVG files using drawing commands.

Security Fix(es):

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).(CVE-2021-45930)

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::QCommonArrayOpsQPainterPath::Element::growAppend (called from QPainterPath::addPath and QPathClipper::intersect).

Scalable Vector Graphics (SVG) is an XML-based language for describing two-dimensional vector graphics. Qt provides classes for rendering and displaying SVG drawings in widgets and on other paint devices.

Security Fix(es):

• qt: out-of-bounds write may lead to DoS (CVE-2021-45930)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section.

Out-of-bounds write in QtPrivate::QCommonArrayOpsQPainterPath::Element::growAppend (CVE-2021-45930) QtSvg QSvgFont m_unitsPerEm initialization is mishandled. (CVE-2023-32573)

These are all security issues fixed in the libQt5Svg5-32bit-5.15.11+kde6-2.1 package on the GA media of openSUSE Tumbleweed.

This update for libqt5-qtsvg fixes the following issues:

• CVE-2021-45930: Fixed an out-of-bounds write that may have let to a denial-of-service (bsc#1196654).
• CVE-2023-32573: Fixed missing initialization of QtSvg QSvgFont m_unitsPerEm variable (bsc#1211298).

This update for libqt5-qtsvg fixes the following issues:

• CVE-2021-45930: Fixed an out-of-bounds write that may have lead to a denial-of-service (bsc#1196654).
• CVE-2023-32573: Fixed missing initialization of QtSvg QSvgFont m_unitsPerEm variable (bsc#1211298).

This update for libqt5-qtsvg fixes the following issues:

• CVE-2021-45930: Fixed an out-of-bounds write that may have lead to a denial-of-service (bsc#1196654).
• CVE-2023-32573: Fixed missing initialization of QtSvg QSvgFont m_unitsPerEm variable (bsc#1211298).

This update for libqt5-qtsvg fixes the following issues:

• CVE-2021-45930: Fixed an out-of-bounds write that may have lead to a denial-of-service (bsc#1196654).
• CVE-2023-32573: Fixed missing initialization of QtSvg QSvgFont m_unitsPerEm variable (bsc#1211298).

This update for libqt4 fixes the following issues:

• CVE-2021-45930: Fix out of-bounds write when parsing path nodes (bsc#1196654).
• CVE-2023-32573: Fix missing initialization of QSvgFont unitsPerEm (bsc#1211298).
• CVE-2023-32763: Fix potential buffer when rendering a SVG file with an image inside (bsc#1211798).
• CVE-2023-34410: Fix missing sync of disablement of loading root certificates in qsslsocketprivate (bsc#1211994).
• CVE-2023-37369: Fix buffer overflow in QXmlStreamReader (bsc#1214327).
• CVE-2023-38197: Fix infinite loops in QXmlStreamReader (bsc#1213326).

This update for libqt4 fixes the following issues:

• CVE-2021-45930: Fixed out-of-bounds write leading to DoS (bsc#1196654)
• CVE-2023-32573: Fixed missing initialization of QtSvg QSvgFont m_unitsPerEm (bsc#1211298)
• CVE-2023-32763: Fixed buffer overflow on QTextLayout during rendering of an SVG file with an image inside (bsc#1211798)
• CVE-2023-34410: Fixed certificate validation not always considering whether the root of a chain is a configured CA certificate (bsc#1211994)
• CVE-2023-37369: Fixed buffer overflow in QXmlStreamReader (bsc#1214327)
• CVE-2023-38197: Fixed infinite loops in QXmlStreamReader (bsc#1213326)
• CVE-2025-5455: Fixed denial of service when qDecodeDataUrl() is called with malformed data and assertions are enabled (bsc#1245609)

It was discovered that QtSvg incorrectly handled certain malformed SVG images. If a user or automated system were tricked into opening a specially crafted image file, a remote attacker could use this issue to cause QtSvg to crash, resulting in a denial of service, or possibly execute arbitrary code.

It was discovered that QtSvg incorrectly handled certain SVG images. An attacker could possibly use this issue to cause QtSvg to crash, resulting in a denial of service. This issue only affected Ubuntu 16.04 LTS. (CVE-2018-19869)

It was discovered that QtSvg incorrectly handled certain SVG images. An attacker could use this issue to cause QtSvg to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 16.04 LTS and Ubuntu 20.04 LTS. (CVE-2021-3481, CVE-2021-28025, CVE-2021-45930)

It was discovered that QtSvg incorrectly handled certain SVG images. An attacker could use this issue to cause QtSvg to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2023-32573)