CVE-2023-6478
highA flaw was found in xorg-server.
Vendor / product: X.org — x server
A flaw was found in xorg-server. A specially crafted request to RRChangeProviderProperty or RRChangeOutputProperty can trigger an integer overflow which may lead to a disclosure of sensitive information.
CVSS
7.5
7.5 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Severity source: NVD CVSS v3.1 (nvd@nist.gov)
Timeline (UTC)
Published: 2023-12-13 07:15
Modified: 2026-11-04 21:17
NVD status: Modified
Last synced 3 hours ago
Verified against the source API 2026-11-04 21:37 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
x.org / x_server <21.1.10
x.org / xwayland <23.2.3
redhat / enterprise_linux_eus 9.2
debian / debian_linux 10.0, 11.0, 12.0
tigervnc / tigervnc all versions
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
Vendor advisory: https://access.redhat.com/errata/RHSA-2023:7886
Vendor advisory: https://access.redhat.com/security/cve/CVE-2023-6478
Vendor advisory: https://lists.x.org/archives/xorg-announce/2023-December/003435.html
Vendor advisory: https://access.redhat.com/errata/RHSA-2023:7886
Vendor advisory: https://access.redhat.com/security/cve/CVE-2023-6478
Vendor advisory: https://lists.x.org/archives/xorg-announce/2023-December/003435.html
References
- https://access.redhat.com/errata/RHSA-2023:7886 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2024:0006 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2024:0009 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2024:0010 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2024:0014 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2024:0015 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2024:0016 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2024:0017 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2024:0018 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2024:0020 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2024:2169 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2024:2170 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2024:2995 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2024:2996 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2025:12751 secalert@redhat.com
- https://access.redhat.com/security/cve/CVE-2023-6478 secalert@redhat.com
- https://bugzilla.redhat.com/show_bug.cgi?id=2253298 secalert@redhat.com
- https://gitlab.freedesktop.org/xorg/xserver/-/commit/14f480010a93ff962fef66a16412fafff81ad... secalert@redhat.com
- https://lists.x.org/archives/xorg-announce/2023-December/003435.html secalert@redhat.com
- http://www.openwall.com/lists/oss-security/2023/12/13/1 af854a3a-2127-422b-91ae-364da2661108
- https://access.redhat.com/errata/RHSA-2023:7886 af854a3a-2127-422b-91ae-364da2661108
- https://access.redhat.com/errata/RHSA-2024:0006 af854a3a-2127-422b-91ae-364da2661108
- https://access.redhat.com/errata/RHSA-2024:0009 af854a3a-2127-422b-91ae-364da2661108
- https://access.redhat.com/errata/RHSA-2024:0010 af854a3a-2127-422b-91ae-364da2661108
- https://access.redhat.com/errata/RHSA-2024:0014 af854a3a-2127-422b-91ae-364da2661108
Data sources
NVD CVE API 2.0 — fetched 2026-11-04 21:37 UTC · record ↗