DEBIAN-CVE-2026-9499

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Source
https://security-tracker.debian.org/tracker/CVE-2026-9499
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-9499.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-9499
Upstream
  • CVE-2026-9499
Published
2026-07-21T14:16:35Z
Modified
2026-09-14T17:03:38Z
Severity
  • 6.3 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X CVSS Calculator
Summary
[none]
Details

An out-of-bounds read (buffer over-read) vulnerability exists in QTextCodec::codecForName() in Qt. When the function is called with a QByteArray that is not NUL-terminated (for example, one created with QByteArray::fromRawData()), the codec-name matching routine reads past the end of the supplied buffer. In most cases this results in an incorrect text codec being selected; in the worst case, if the over-read reaches unmapped memory, the process crashes (denial of service). The over-read is bounded by the length of the longest codec-name candidate, and the out-of-bounds bytes are only compared internally against Qt's fixed list of codec names, so no data is disclosed to an attacker. Applications that do not pass non-NUL-terminated QByteArrays to QTextCodec::codecForName() are not exposed. The affected code resides in the Qt5Compat module from Qt 6.0.0 onward, and in Qt Core (qtbase) in Qt 4.x and Qt 5.x.

References

Affected packages

Debian:12
qt6-5compat

Package

Name
qt6-5compat
Purl
pkg:deb/debian/qt6-5compat?arch=source&distro=bookworm

Affected ranges

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

Affected versions

6.*
6.4.2-1
6.4.2-2
6.4.2-3
6.4.2-4
6.6.1-1
6.6.1-2
6.6.2-1
6.6.2-2
6.7.2-1
6.7.2-2
6.7.2-3
6.8.2-1
6.8.2-2
6.8.2-3
6.9.1-1
6.9.1-2
6.9.2-1
6.9.2-2
6.9.2-3
6.10.2-1
6.10.2-2
6.10.2-3
6.10.2-4
6.11.2-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-9499.json"
qtbase-opensource-src

Package

Name
qtbase-opensource-src
Purl
pkg:deb/debian/qtbase-opensource-src?arch=source&distro=bookworm

Affected ranges

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

Affected versions

5.*
5.15.8+dfsg-11
5.15.8+dfsg-11+deb12u1
5.15.8+dfsg-11+deb12u2
5.15.8+dfsg-11+deb12u3
5.15.8+dfsg-12
5.15.8+dfsg-13
5.15.9+dfsg-1
5.15.9+dfsg-2
5.15.9+dfsg-3
5.15.10+dfsg-1
5.15.10+dfsg-2
5.15.10+dfsg-3
5.15.10+dfsg-4
5.15.10+dfsg-5
5.15.10+dfsg-6
5.15.10+dfsg-7
5.15.10+dfsg-7.1
5.15.10+dfsg-7.2
5.15.11+dfsg-1
5.15.12+dfsg-1
5.15.12+dfsg-2
5.15.12+dfsg-3
5.15.13+dfsg-1
5.15.13+dfsg-2
5.15.13+dfsg-3
5.15.13+dfsg-4
5.15.14+dfsg-1
5.15.15+dfsg-1
5.15.15+dfsg-2
5.15.15+dfsg-3
5.15.15+dfsg-4
5.15.15+dfsg-5
5.15.15+dfsg-6
5.15.16+dfsg-1
5.15.16+dfsg-2
5.15.17+dfsg-1
5.15.17+dfsg-2
5.15.17+dfsg-3
5.15.17+dfsg-4
5.15.17+dfsg-5
5.15.17+dfsg-6
5.15.17+dfsg-7
5.15.17+dfsg-8
5.15.18+dfsg-1
5.15.18+dfsg-2
5.15.19+dfsg-1
5.15.19+dfsg-2
5.15.19+dfsg-3
5.15.19+dfsg-4

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-9499.json"
Debian:13
qt6-5compat

Package

Name
qt6-5compat
Purl
pkg:deb/debian/qt6-5compat?arch=source&distro=trixie

Affected ranges

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

Affected versions

6.*
6.8.2-3
6.9.1-1
6.9.1-2
6.9.2-1
6.9.2-2
6.9.2-3
6.10.2-1
6.10.2-2
6.10.2-3
6.10.2-4
6.11.2-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-9499.json"
qtbase-opensource-src

Package

Name
qtbase-opensource-src
Purl
pkg:deb/debian/qtbase-opensource-src?arch=source&distro=trixie

Affected ranges

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

Affected versions

5.*
5.15.15+dfsg-6
5.15.15+dfsg-6+deb13u1
5.15.16+dfsg-1
5.15.16+dfsg-2
5.15.17+dfsg-1
5.15.17+dfsg-2
5.15.17+dfsg-3
5.15.17+dfsg-4
5.15.17+dfsg-5
5.15.17+dfsg-6
5.15.17+dfsg-7
5.15.17+dfsg-8
5.15.18+dfsg-1
5.15.18+dfsg-2
5.15.19+dfsg-1
5.15.19+dfsg-2
5.15.19+dfsg-3
5.15.19+dfsg-4

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-9499.json"
Debian:14
qt6-5compat

Package

Name
qt6-5compat
Purl
pkg:deb/debian/qt6-5compat?arch=source&distro=forky

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
6.10.2-4

Affected versions

6.*
6.8.2-3
6.9.1-1
6.9.1-2
6.9.2-1
6.9.2-2
6.9.2-3
6.10.2-1
6.10.2-2
6.10.2-3

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-9499.json"
qtbase-opensource-src

Package

Name
qtbase-opensource-src
Purl
pkg:deb/debian/qtbase-opensource-src?arch=source&distro=forky

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
5.15.19+dfsg-4

Affected versions

5.*
5.15.15+dfsg-6
5.15.16+dfsg-1
5.15.16+dfsg-2
5.15.17+dfsg-1
5.15.17+dfsg-2
5.15.17+dfsg-3
5.15.17+dfsg-4
5.15.17+dfsg-5
5.15.17+dfsg-6
5.15.17+dfsg-7
5.15.17+dfsg-8
5.15.18+dfsg-1
5.15.18+dfsg-2
5.15.19+dfsg-1
5.15.19+dfsg-2
5.15.19+dfsg-3

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-9499.json"