CVE-2021-38593
published 2021-08-12CVE-2021-38593: Qt 5.x before 5.15.6 and 6.x through 6.1.2 has an out-of-bounds write in QOutlineMapper::convertPath (called from QRasterPaintEngine::fill and…
PriorityP340high7.5CVSS 3.1
AVNACLPRNUINSUCNINAH
EPSS
3.06%
86.2th percentile
Qt 5.x before 5.15.6 and 6.x through 6.1.2 has an out-of-bounds write in QOutlineMapper::convertPath (called from QRasterPaintEngine::fill and QPaintEngineEx::stroke).
Affected
14 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | qtbase-opensource-src | — | — |
| debian | qtbase-opensource-src-gles | — | — |
| fedoraproject | fedora | — | — |
| fedoraproject | fedora | — | — |
| msrc | cbl2_qt5-qtbase_5.12.11-11_on_cbl_mariner_2.0 | — | — |
| msrc | cbl2_qt5-qtbase_5.12.11-15_on_cbl_mariner_2.0 | — | — |
| msrc | cbl2_qt5-qtsvg_5.12.11-3_on_cbl_mariner_2.0 | — | — |
| msrc | cbl_mariner_1.0_arm | — | — |
| msrc | cbl_mariner_1.0_x64 | — | — |
| msrc | cbl_mariner_2.0_arm | — | — |
| msrc | cbl_mariner_2.0_x64 | — | — |
| msrc | cm1_qt5-qtsvg_5.12.11-2_on_cbl_mariner_1.0 | — | — |
| qt | qt | >= 5.0.0 < 5.15.6 | 5.15.6 |
| qt | qt | 6.0.0 – 6.1.2 | — |
CVSS provenance
nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
nvdv2.05.0MEDIUMAV:N/AC:L/Au:N/C:N/I:N/A:P
osv7.5HIGH
vendor_debian7.5LOW
vendor_msrc7.5HIGH
vendor_redhat7.5HIGH
vendor_ubuntu5.3MEDIUM
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GHSA
GHSA-qfcf-2jfw-4cm8: Qt 5
ghsa_unreviewed·2022-05-24
CVE-2021-38593 [HIGH] CWE-787 GHSA-qfcf-2jfw-4cm8: Qt 5
Qt 5.0.0 through 6.1.2 has an out-of-bounds write in QOutlineMapper::convertPath (called from QRasterPaintEngine::fill and QPaintEngineEx::stroke).
OSV
qtbase-opensource-src vulnerabilities
osv·2021-09-16·CVSS 5.3
CVE-2020-17507 [MEDIUM] qtbase-opensource-src vulnerabilities
qtbase-opensource-src vulnerabilities
It was discovered that Qt incorrectly handled certain XBM image files. If a
user or automated system were tricked into opening a specially crafted PPM
file, a remote attacker could cause Qt to crash, resulting in a denial of
service. (CVE-2020-17507)
It was discovered that Qt incorrectly handled certain graphics operations.
If a user or automated system were tricked into performing certain graphics
operations, a remote attacker could cause Qt to crash, resulting in a
denial of service. (CVE-2021-38593)
OSV
CVE-2021-38593: Qt 5
osv·2021-08-12·CVSS 7.5
CVE-2021-38593 [HIGH] CVE-2021-38593: Qt 5
Qt 5.x before 5.15.6 and 6.x through 6.1.2 has an out-of-bounds write in QOutlineMapper::convertPath (called from QRasterPaintEngine::fill and QPaintEngineEx::stroke).
Ubuntu
Qt vulnerabilities
vendor_ubuntu·2021-09-16·CVSS 5.3
CVE-2021-38593 [MEDIUM] Qt vulnerabilities
Title: Qt vulnerabilities
Summary: Several security issues were fixed in Qt.
It was discovered that Qt incorrectly handled certain XBM image files. If a
user or automated system were tricked into opening a specially crafted PPM
file, a remote attacker could cause Qt to crash, resulting in a denial of
service. (CVE-2020-17507)
It was discovered that Qt incorrectly handled certain graphics operations.
If a user or automated system were tricked into performing certain graphics
operations, a remote attacker could cause Qt to crash, resulting in a
denial of service. (CVE-2021-38593)
Instructions: After a standard system update you need to restart your session to make all
the necessary changes.
Microsoft
Qt 5.x before 5.15.6 and 6.x through 6.1.2 has an out-of-bounds write in QOutlineMapper::convertPath (called from QRasterPaintEngine::fill and QPaintEngineEx::stroke).
vendor_msrc·2021-08-10·CVSS 7.5
CVE-2021-38593 [HIGH] CWE-787 Qt 5.x before 5.15.6 and 6.x through 6.1.2 has an out-of-bounds write in QOutlineMapper::convertPath (called from QRasterPaintEngine::fill and QPaintEngineEx::stroke).
Qt 5.x before 5.15.6 and 6.x through 6.1.2 has an out-of-bounds write in QOutlineMapper::convertPath (called from QRasterPaintEngine::fill and QPaintEngineEx::stroke).
FAQ: Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability?
One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF/VEX in October 2025. See this blog post for more information. If impact to additional products is identified, we will update the CVE to reflect this.
Mariner: M
Red Hat
qt: out-of-bounds write in QOutlineMapper::convertPath called from QRasterPaintEngine::fill and QPaintEngineEx::stroke
vendor_redhat·2021-07-27·CVSS 7.5
CVE-2021-38593 [HIGH] CWE-787 qt: out-of-bounds write in QOutlineMapper::convertPath called from QRasterPaintEngine::fill and QPaintEngineEx::stroke
qt: out-of-bounds write in QOutlineMapper::convertPath called from QRasterPaintEngine::fill and QPaintEngineEx::stroke
Qt 5.x before 5.15.6 and 6.x through 6.1.2 has an out-of-bounds write in QOutlineMapper::convertPath (called from QRasterPaintEngine::fill and QPaintEngineEx::stroke).
A vulnerability was found in Qt, where an out-of-bounds write in the QOutlineMapper::convertPath function can lead to a denial of service, a remote attacker could exploit this flaw by sending a specially crafted request, causing the application to crash.
Statement: This vulnerability is rated as moderate because it allows a remote attacker to trigger a denial of service through an out-of-bounds write, exploiting this flaw could crash the application, impacting availability but not compromising system secu
Debian
CVE-2021-38593: qtbase-opensource-src - Qt 5.x before 5.15.6 and 6.x through 6.1.2 has an out-of-bounds write in QOutlin...
vendor_debian·2021·CVSS 7.5
CVE-2021-38593 [HIGH] CVE-2021-38593: qtbase-opensource-src - Qt 5.x before 5.15.6 and 6.x through 6.1.2 has an out-of-bounds write in QOutlin...
Qt 5.x before 5.15.6 and 6.x through 6.1.2 has an out-of-bounds write in QOutlineMapper::convertPath (called from QRasterPaintEngine::fill and QPaintEngineEx::stroke).
Scope: local
bookworm: resolved
bullseye: resolved
forky: resolved
sid: resolved
trixie: resolved
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=35566https://github.com/google/oss-fuzz-vulns/blob/main/vulns/qt/OSV-2021-903.yamlhttps://github.com/qt/qtbase/commit/1ca02cf2879a5e1511a2f2109f0925cf4c892862https://github.com/qt/qtbase/commit/202143ba41f6ac574f1858214ed8bf4a38b73ccdhttps://github.com/qt/qtbase/commit/6b400e3147dcfd8cc3a393ace1bd118c93762e0chttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/36VN2WKMNQUSTF6ZW2X52NPAJVXJ4S5I/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HY5YCSDCTLHVMP3OXOM6HNTWHV6DBHDX/https://security.gentoo.org/glsa/202402-03https://wiki.qt.io/Qt_5.15_Release#Known_Issueshttps://www.qt.io/blog/qt-5.15-extended-support-for-subscription-license-holdershttps://bugs.chromium.org/p/oss-fuzz/issues/detail?id=35566https://github.com/google/oss-fuzz-vulns/blob/main/vulns/qt/OSV-2021-903.yamlhttps://github.com/qt/qtbase/commit/1ca02cf2879a5e1511a2f2109f0925cf4c892862https://github.com/qt/qtbase/commit/202143ba41f6ac574f1858214ed8bf4a38b73ccdhttps://github.com/qt/qtbase/commit/6b400e3147dcfd8cc3a393ace1bd118c93762e0chttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/36VN2WKMNQUSTF6ZW2X52NPAJVXJ4S5I/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HY5YCSDCTLHVMP3OXOM6HNTWHV6DBHDX/https://security.gentoo.org/glsa/202402-03https://wiki.qt.io/Qt_5.15_Release#Known_Issueshttps://www.qt.io/blog/qt-5.15-extended-support-for-subscription-license-holders
2021-08-12
Published