CVE-2023-6816criticalCWE-787

CVE-2023-6816: critical vulnerability in Red Hat Enterprise Linux 6

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

Published · Updated

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28Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 9.8epss 2.1%
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
Red Hat · Red Hat Enterprise Linux 6Red Hat · Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSIONRed Hat · Red Hat Enterprise Linux 7Red Hat · Red Hat Enterprise Linux 8Red Hat · Red Hat Enterprise Linux 8.2 Advanced Update SupportRed Hat · Red Hat Enterprise Linux 8.2 Telecommunications Update ServiceRed Hat · Red Hat Enterprise Linux 8.2 Update Services for SAP SolutionsRed Hat · Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportRed Hat · Red Hat Enterprise Linux 8.4 Telecommunications Update ServiceRed Hat · Red Hat Enterprise Linux 8.4 Update Services for SAP SolutionsRed Hat · Red Hat Enterprise Linux 8.6 Extended Update SupportRed Hat · Red Hat Enterprise Linux 8.8 Extended Update SupportRed Hat · Red Hat Enterprise Linux 9Red Hat · Red Hat Enterprise Linux 9.0 Extended Update SupportRed Hat · Red Hat Enterprise Linux 9.2 Extended Update Support
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