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critical9.8

CVE-2023-6816

A flaw was found in X.Org server.

Impact

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.

Affected products

VendorProductAffected versions
X.OrgX Server
before 21.1.11
X.OrgXwayland
before 23.2.4
FedoraprojectFedora
Version 39
RedhatEnterprise Linux Desktop
Version 7.0
RedhatEnterprise Linux Server
Version 7.0
RedhatEnterprise Linux Workstation
Version 7.0
DebianDebian Linux
Version 10.0

Weakness classification

CWE-787

References