CWE
787
EPSS
0.126%
Advisory Published
CVE Published
CVE Published
Updated

CVE-2023-6816: Xorg-x11-server: heap buffer overflow in devicefocusevent and procxiquerypointer

First published: Wed Jan 10 2024(Updated: )

A flaw was found in X.Org server. Both DeviceFocusEvent and the XIQueryPointer reply contain a bit for each logical button currently down. Buttons can be arbitrarily mapped to any value up to 255, but the X.Org Server was only allocating space for the device's particular number of buttons, leading to a heap overflow if a bigger value was used.

Credit: secalert@redhat.com secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
ubuntu/xorg-server<2:1.19.6-1ubuntu4.15+
2:1.19.6-1ubuntu4.15+
ubuntu/xorg-server<2:1.20.13-1ubuntu1~20.04.14
2:1.20.13-1ubuntu1~20.04.14
ubuntu/xorg-server<2:21.1.4-2ubuntu1.7~22.04.7
2:21.1.4-2ubuntu1.7~22.04.7
ubuntu/xorg-server<2:21.1.7-1ubuntu3.6
2:21.1.7-1ubuntu3.6
ubuntu/xorg-server<2:21.1.7-3ubuntu2.6
2:21.1.7-3ubuntu2.6
ubuntu/xorg-server<2:21.1.11-1ubuntu1
2:21.1.11-1ubuntu1
ubuntu/xorg-server<2:1.15.1-0ubuntu2.11+
2:1.15.1-0ubuntu2.11+
ubuntu/xorg-server<2:21.1.11-1
2:21.1.11-1
ubuntu/xorg-server<2:1.18.4-0ubuntu0.12+
2:1.18.4-0ubuntu0.12+
ubuntu/xwayland<2:22.1.1-1ubuntu0.10
2:22.1.1-1ubuntu0.10
ubuntu/xwayland<2:22.1.8-1ubuntu1.4
2:22.1.8-1ubuntu1.4
ubuntu/xwayland<2:23.2.0-1ubuntu0.4
2:23.2.0-1ubuntu0.4
ubuntu/xwayland<2:23.2.4-1
2:23.2.4-1
X.org Xorg-server<21.1.11
X.org Xwayland<23.2.4
Fedoraproject Fedora=39
Redhat Enterprise Linux Desktop=7.0
Redhat Enterprise Linux Server=7.0
Redhat Enterprise Linux Workstation=7.0
Debian Debian Linux=10.0
redhat/xorg-server<21.1.11
21.1.11
redhat/xwayland<23.2.4
23.2.4
debian/xorg-server<=2:1.20.4-1+deb10u4
2:1.20.4-1+deb10u14
2:1.20.11-1+deb11u11
2:1.20.11-1+deb11u13
2:21.1.7-3+deb12u5
2:21.1.7-3+deb12u7
2:21.1.12-1
debian/xwayland<=2:22.1.9-1
2:24.1.0-1

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