CVE-2023-6816
CRITICALX.Org Server < 21.1.11 and XWayland < 23.2.4 - Out-of-bounds Write via Button Mapping
Title source: llmDescription
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.
References (24)
Core 24
Core References
Third Party Advisory
https://security.gentoo.org/glsa/202401-30
Vendor Advisory
https://security.netapp.com/advisory/ntap-20240307-0006/
Mailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/[email protected]/message/5J4H7CH565ALSZZYKOJFYDA5KFLG6NUK/
Mailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/[email protected]/message/EJBMCWQ54R6ZL3MYU2D2JBW6JMZL7BQW/
Mailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/[email protected]/message/IZ75X54CN4IFYMIV7OK3JVZ57FHQIGIC/
Third Party Advisory vendor-advisory
x_refsource_redhat
https://access.redhat.com/errata/RHSA-2024:0320
Vendor Advisory vendor-advisory
x_refsource_redhat
https://access.redhat.com/errata/RHSA-2024:0557
Vendor Advisory vendor-advisory
x_refsource_redhat
https://access.redhat.com/errata/RHSA-2024:0558
Vendor Advisory vendor-advisory
x_refsource_redhat
https://access.redhat.com/errata/RHSA-2024:0597
Vendor Advisory vendor-advisory
x_refsource_redhat
https://access.redhat.com/errata/RHSA-2024:0607
Vendor Advisory vendor-advisory
x_refsource_redhat
https://access.redhat.com/errata/RHSA-2024:0614
Vendor Advisory vendor-advisory
x_refsource_redhat
https://access.redhat.com/errata/RHSA-2024:0617
Vendor Advisory vendor-advisory
x_refsource_redhat
https://access.redhat.com/errata/RHSA-2024:0621
Vendor Advisory vendor-advisory
x_refsource_redhat
https://access.redhat.com/errata/RHSA-2024:0626
Vendor Advisory vendor-advisory
x_refsource_redhat
https://access.redhat.com/errata/RHSA-2024:0629
Vendor Advisory vendor-advisory
x_refsource_redhat
https://access.redhat.com/errata/RHSA-2024:2169
Vendor Advisory vendor-advisory
x_refsource_redhat
https://access.redhat.com/errata/RHSA-2024:2170
Vendor Advisory vendor-advisory
x_refsource_redhat
RHSA-2024:2995
https://access.redhat.com/errata/RHSA-2024:2995
Vendor Advisory vendor-advisory
x_refsource_redhat
https://access.redhat.com/errata/RHSA-2024:2996
Vendor Advisory vendor-advisory
x_refsource_redhat
https://access.redhat.com/errata/RHSA-2025:12751
Third Party Advisory vdb-entry
x_refsource_redhat
https://access.redhat.com/security/cve/CVE-2023-6816
Issue Tracking issue-tracking
x_refsource_redhat
https://bugzilla.redhat.com/show_bug.cgi?id=2257691
Scores
CVSS v3
9.8
EPSS
0.0301
EPSS Percentile
86.8%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-787
Status
published
Products (27)
debian/debian_linux
10.0
fedoraproject/fedora
39
Red Hat/Red Hat Enterprise Linux 6
Red Hat/Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION
0:1.1.0-25.el6_10.13
Red Hat/Red Hat Enterprise Linux 7
0:1.20.4-27.el7_9
Red Hat/Red Hat Enterprise Linux 7
0:1.8.0-31.el7_9
Red Hat/Red Hat Enterprise Linux 8
0:1.13.1-2.el8_9.7
Red Hat/Red Hat Enterprise Linux 8
0:1.20.11-22.el8
Red Hat/Red Hat Enterprise Linux 8
0:21.1.3-15.el8
Red Hat/Red Hat Enterprise Linux 8.2 Advanced Update Support
0:1.9.0-15.el8_2.9
... and 17 more
Published
Jan 18, 2024
Tracked Since
Feb 18, 2026