UBUNTU-CVE-2026-6210

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Source
https://ubuntu.com/security/CVE-2026-6210
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-6210.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-6210
Upstream
  • CVE-2026-6210
Published
2026-05-06T12:16:00Z
Modified
2026-05-27T20:30:07.582413280Z
Severity
  • 8.7 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

A type confusion vulnerability in Qt SVG allows an attacker to cause an application crash via a crafted SVG image. When processing SVG marker references, the renderer retrieves a node by its id attribute and casts it to QSvgMarker* without verifying the node type. A non-marker element (such as a <line> element) that references itself as a marker triggers an out-of-bounds heap read due to the object size difference between QSvgLine and QSvgMarker, followed by an endless recursion that bypasses the marker recursion guard through incorrect virtual dispatch. The result is an application crash (denial of service). This issue affects Qt SVG: from 6.7.0 before 6.8.8, from 6.9.0 before 6.11.1.

References

Affected packages

Ubuntu:22.04:LTS / qt6-svg

Package

Name
qt6-svg
Purl
pkg:deb/ubuntu/qt6-svg?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

6.*
6.2.2-2ubuntu1
6.2.4-1ubuntu1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libqt6svg6",
            "binary_version": "6.2.4-1ubuntu1"
        },
        {
            "binary_name": "libqt6svgwidgets6",
            "binary_version": "6.2.4-1ubuntu1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-6210.json"

Ubuntu:24.04:LTS / qt6-svg

Package

Name
qt6-svg
Purl
pkg:deb/ubuntu/qt6-svg?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

6.*
6.4.2-4ubuntu1
6.4.2-4ubuntu2
6.4.2-4ubuntu3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libqt6svg6",
            "binary_version": "6.4.2-4ubuntu3"
        },
        {
            "binary_name": "libqt6svgwidgets6",
            "binary_version": "6.4.2-4ubuntu3"
        },
        {
            "binary_name": "qt6-svg-doc-html",
            "binary_version": "6.4.2-4ubuntu3"
        },
        {
            "binary_name": "qt6-svg-examples",
            "binary_version": "6.4.2-4ubuntu3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-6210.json"

Ubuntu:25.10 / qt6-svg

Package

Name
qt6-svg
Purl
pkg:deb/ubuntu/qt6-svg?arch=source&distro=questing

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

6.*
6.8.3-0ubuntu1
6.9.2-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libqt6svg6",
            "binary_version": "6.9.2-1"
        },
        {
            "binary_name": "libqt6svgwidgets6",
            "binary_version": "6.9.2-1"
        },
        {
            "binary_name": "qt6-svg-doc-html",
            "binary_version": "6.9.2-1"
        },
        {
            "binary_name": "qt6-svg-plugins",
            "binary_version": "6.9.2-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-6210.json"

Ubuntu:26.04:LTS / qt6-svg

Package

Name
qt6-svg
Purl
pkg:deb/ubuntu/qt6-svg?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

6.*
6.9.2-1
6.9.2-4
6.9.2-5
6.10.2-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libqt6svg6",
            "binary_version": "6.10.2-2"
        },
        {
            "binary_name": "libqt6svgwidgets6",
            "binary_version": "6.10.2-2"
        },
        {
            "binary_name": "qt6-svg-doc-html",
            "binary_version": "6.10.2-2"
        },
        {
            "binary_name": "qt6-svg-plugins",
            "binary_version": "6.10.2-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-6210.json"