DEBIAN-CVE-2023-0494

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Source
https://security-tracker.debian.org/tracker/CVE-2023-0494
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2023-0494.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2023-0494
Upstream
Published
2023-03-27T21:15:10Z
Modified
2025-09-30T05:16:02.055959Z
Severity
  • 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

A vulnerability was found in X.Org. This issue occurs due to a dangling pointer in DeepCopyPointerClasses that can be exploited by ProcXkbSetDeviceInfo() and ProcXkbGetDeviceInfo() to read and write into freed memory. This can lead to local privilege elevation on systems where the X server runs privileged and remote code execution for ssh X forwarding sessions.

References

Affected packages

Debian:11

xorg-server

Package

Name
xorg-server
Purl
pkg:deb/debian/xorg-server?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2:1.20.11-1+deb11u5

Affected versions

2:1.*

2:1.20.11-1
2:1.20.11-1+deb11u1
2:1.20.11-1+deb11u2
2:1.20.11-1+deb11u3
2:1.20.11-1+deb11u4

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:12

xorg-server

Package

Name
xorg-server
Purl
pkg:deb/debian/xorg-server?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2:21.1.7-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

xwayland

Package

Name
xwayland
Purl
pkg:deb/debian/xwayland?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2:22.1.8-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:13

xorg-server

Package

Name
xorg-server
Purl
pkg:deb/debian/xorg-server?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2:21.1.7-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

xwayland

Package

Name
xwayland
Purl
pkg:deb/debian/xwayland?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2:22.1.8-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:14

xorg-server

Package

Name
xorg-server
Purl
pkg:deb/debian/xorg-server?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2:21.1.7-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

xwayland

Package

Name
xwayland
Purl
pkg:deb/debian/xwayland?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2:22.1.8-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}