CVE-2023-6478
Xorg-x11-server: out-of-bounds memory read in rrchangeoutputproperty and rrchangeproviderproperty
- 7.6HighCVSS base score
- 1.6%Exploitation in 30 daysEPSS · top 24% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
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.
Timeline
ID reserved
By redhat
- 9 days later
· 9 days later
Published
- 3 years later
· 3 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| redhatCNA (assigner) | 3.1 | High7.6 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L |
| NVDNVD · Modified | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
- EPSS (exploitation in 30 days)
- 1.6% · top 24% of all CVEs (11 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: yes · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.6.
Affected products
Red Hat · Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION
- unaffected 0:1.1.0-25.el6_10.13 – < *
Red Hat · Red Hat Enterprise Linux 7
- unaffected 0:1.8.0-28.el7_9 – < *
Red Hat · Red Hat Enterprise Linux 7
- unaffected 0:1.20.4-25.el7_9 – < *
Red Hat · Red Hat Enterprise Linux 8
- unaffected 0:1.13.1-2.el8_9.4 – < *
Red Hat · Red Hat Enterprise Linux 8
- unaffected 0:1.20.11-22.el8 – < *
Red Hat · Red Hat Enterprise Linux 8
- unaffected 0:21.1.3-15.el8 – < *
Red Hat · Red Hat Enterprise Linux 8.2 Advanced Update Support
- unaffected 0:1.9.0-15.el8_2.6 – < *
Red Hat · Red Hat Enterprise Linux 8.2 Telecommunications Update Service
- unaffected 0:1.9.0-15.el8_2.6 – < *
Red Hat · Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions
- unaffected 0:1.9.0-15.el8_2.6 – < *
Red Hat · Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
- unaffected 0:1.11.0-8.el8_4.5 – < *
Red Hat · Red Hat Enterprise Linux 8.4 Telecommunications Update Service
- unaffected 0:1.11.0-8.el8_4.5 – < *
Red Hat · Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions
- unaffected 0:1.11.0-8.el8_4.5 – < *
Red Hat · Red Hat Enterprise Linux 8.6 Extended Update Support
- unaffected 0:1.12.0-6.el8_6.6 – < *
Red Hat · Red Hat Enterprise Linux 8.8 Extended Update Support
- unaffected 0:1.12.0-15.el8_8.4 – < *
Red Hat · Red Hat Enterprise Linux 9
- unaffected 0:1.13.1-3.el9_3.3 – < *
Red Hat · Red Hat Enterprise Linux 9
- unaffected 0:1.20.11-24.el9 – < *
Red Hat · Red Hat Enterprise Linux 9
- unaffected 0:22.1.9-5.el9 – < *
Red Hat · Red Hat Enterprise Linux 9.0 Extended Update Support
- unaffected 0:1.11.0-22.el9_0.5 – < *
Red Hat · Red Hat Enterprise Linux 9.2 Extended Update Support
- unaffected 0:1.12.0-14.el9_2.2 – < *
Red Hat · Red Hat Enterprise Linux 6
All versions: unknown
What to do
Workaround: Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
References
References28
- RHSA-2023:7886 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2024:0006 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2024:0009 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2024:0010 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2024:0014 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2024:0015 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2024:0016 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2024:0017 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2024:0018 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2024:0020 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2024:2169 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2024:2170 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2024:2995 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2024:2996 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2025:12751 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2023-6478 (opens in a new tab)vdb-entryx_refsource_REDHATx_transferred
- RHBZ#2253298 (opens in a new tab)issue-trackingx_refsource_REDHATx_transferred
- https://gitlab.freedesktop.org/xorg/xserver/-/commit/14f480010a93ff962fef66a16412fafff81ad632 (opens in a new tab)x_transferred
- https://lists.x.org/archives/xorg-announce/2023-December/003435.html (opens in a new tab)x_transferred
- http://www.openwall.com/lists/oss-security/2023/12/13/1 (opens in a new tab)x_transferred
- https://lists.debian.org/debian-lts-announce/2023/12/msg00008.html (opens in a new tab)x_transferred
- https://lists.fedoraproject.org/archives/list/[email protected]/message/6R63Z6GIWM3YUNZRCGFODUXLW3GY2HD6/ (opens in a new tab)x_transferred
- https://lists.fedoraproject.org/archives/list/[email protected]/message/7PP47YXKM5ETLCYEF6473R3VFCJ6QT2S/ (opens in a new tab)x_transferred
- https://lists.fedoraproject.org/archives/list/[email protected]/message/IFHV5KCQ2SVOD4QMCPZ5HC6YL44L7YJD/ (opens in a new tab)x_transferred
- https://lists.fedoraproject.org/archives/list/[email protected]/message/LJDFWDB7EQVZA45XDP7L5WRSRWS6RVRR/ (opens in a new tab)x_transferred
- https://security.gentoo.org/glsa/202401-30 (opens in a new tab)x_transferred
- https://security.netapp.com/advisory/ntap-20240125-0003/ (opens in a new tab)x_transferred
- https://www.debian.org/security/2023/dsa-5576 (opens in a new tab)x_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2023-58711 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2023-6478)Record last updated .