CVE-2023-6377
Xorg-x11-server: out-of-bounds memory reads/writes in xkb button actions
CVSS Score
7.8
EPSS Score
0.4%
EPSS Percentile
61th
A flaw was found in xorg-server. Querying or changing XKB button actions such as moving from a touchpad to a mouse can result in out-of-bounds memory reads and writes. This may allow local privilege escalation or possible remote code execution in cases where X11 forwarding is involved.
| CWE | CWE-125 |
| Vendor | red hat |
| Product | red hat enterprise linux 6 extended lifecycle support - extension |
| Published | Dec 13, 2023 |
| Last Updated | Mar 24, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
Red Hat / Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION
All versions affected Red Hat / Red Hat Enterprise Linux 7
All versions affected Red Hat / Red Hat Enterprise Linux 7
All versions affected Red Hat / Red Hat Enterprise Linux 8
All versions affected Red Hat / Red Hat Enterprise Linux 8
All versions affected Red Hat / Red Hat Enterprise Linux 8
All versions affected Red Hat / Red Hat Enterprise Linux 8.2 Advanced Update Support
All versions affected Red Hat / Red Hat Enterprise Linux 8.2 Telecommunications Update Service
All versions affected Red Hat / Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions
All versions affected Red Hat / Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
All versions affected Red Hat / Red Hat Enterprise Linux 8.4 Telecommunications Update Service
All versions affected Red Hat / Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions
All versions affected Red Hat / Red Hat Enterprise Linux 8.6 Extended Update Support
All versions affected Red Hat / Red Hat Enterprise Linux 8.8 Extended Update Support
All versions affected Red Hat / Red Hat Enterprise Linux 9
All versions affected Red Hat / Red Hat Enterprise Linux 9
All versions affected Red Hat / Red Hat Enterprise Linux 9
All versions affected Red Hat / Red Hat Enterprise Linux 9.0 Extended Update Support
All versions affected Red Hat / Red Hat Enterprise Linux 9.2 Extended Update Support
All versions affected Red Hat / Red Hat Enterprise Linux 6
All versions affected References
access.redhat.com: https://access.redhat.com/errata/RHSA-2023:7886 access.redhat.com: https://access.redhat.com/errata/RHSA-2024:0006 access.redhat.com: https://access.redhat.com/errata/RHSA-2024:0009 access.redhat.com: https://access.redhat.com/errata/RHSA-2024:0010 access.redhat.com: https://access.redhat.com/errata/RHSA-2024:0014 access.redhat.com: https://access.redhat.com/errata/RHSA-2024:0015 access.redhat.com: https://access.redhat.com/errata/RHSA-2024:0016 access.redhat.com: https://access.redhat.com/errata/RHSA-2024:0017 access.redhat.com: https://access.redhat.com/errata/RHSA-2024:0018 access.redhat.com: https://access.redhat.com/errata/RHSA-2024:0020 access.redhat.com: https://access.redhat.com/errata/RHSA-2024:2169 access.redhat.com: https://access.redhat.com/errata/RHSA-2024:2170 access.redhat.com: https://access.redhat.com/errata/RHSA-2024:2995 access.redhat.com: https://access.redhat.com/errata/RHSA-2024:2996 access.redhat.com: https://access.redhat.com/errata/RHSA-2025:13998 access.redhat.com: https://access.redhat.com/security/cve/CVE-2023-6377 bugzilla.redhat.com: https://bugzilla.redhat.com/show_bug.cgi?id=2253291 gitlab.freedesktop.org: https://gitlab.freedesktop.org/xorg/xserver/-/commit/0c1a93d319558fe3ab2d94f51d174b4f93810afd lists.x.org: https://lists.x.org/archives/xorg-announce/2023-December/003435.html openwall.com: http://www.openwall.com/lists/oss-security/2023/12/13/1 lists.debian.org: https://lists.debian.org/debian-lts-announce/2023/12/msg00008.html lists.debian.org: https://lists.debian.org/debian-lts-announce/2023/12/msg00013.html lists.fedoraproject.org: https://lists.fedoraproject.org/archives/list/[email protected]/message/6R63Z6GIWM3YUNZRCGFODUXLW3GY2HD6/ lists.fedoraproject.org: https://lists.fedoraproject.org/archives/list/[email protected]/message/7PP47YXKM5ETLCYEF6473R3VFCJ6QT2S/ lists.fedoraproject.org: https://lists.fedoraproject.org/archives/list/[email protected]/message/IFHV5KCQ2SVOD4QMCPZ5HC6YL44L7YJD/ lists.fedoraproject.org: https://lists.fedoraproject.org/archives/list/[email protected]/message/LJDFWDB7EQVZA45XDP7L5WRSRWS6RVRR/ security.gentoo.org: https://security.gentoo.org/glsa/202401-30 security.netapp.com: https://security.netapp.com/advisory/ntap-20240125-0003/ debian.org: https://www.debian.org/security/2023/dsa-5576
Credits
This issue was discovered by Peter Hutterer (Red Hat).