Vulnerability Description
A flaw was found in xorg-x11-server in versions before 21.1.2 and before 1.20.14. An out-of-bounds access can occur in the SwapCreateRegister function. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| X.Org | X Server | < 1.20.14 |
| Fedoraproject | Fedora | 34 |
| Debian | Debian Linux | 9.0 |
Related Weaknesses (CWE)
References
- https://lists.debian.org/debian-lts-announce/2021/12/msg00035.htmlMailing ListThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.x.org/archives/xorg-announce/2021-December/003122.htmlVendor Advisory
- https://lists.x.org/archives/xorg-announce/2021-December/003124.htmlVendor Advisory
- https://security.gentoo.org/glsa/202305-30
- https://security.netapp.com/advisory/ntap-20220114-0004/Third Party Advisory
- https://www.debian.org/security/2021/dsa-5027Third Party Advisory
- https://www.zerodayinitiative.com/advisories/ZDI-21-1550/Third Party AdvisoryVDB Entry
- https://lists.debian.org/debian-lts-announce/2021/12/msg00035.htmlMailing ListThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
FAQ
What is CVE-2021-4011?
CVE-2021-4011 is a vulnerability with a CVSS score of 7.8 (HIGH). A flaw was found in xorg-x11-server in versions before 21.1.2 and before 1.20.14. An out-of-bounds access can occur in the SwapCreateRegister function. The highest threat from this vulnerability is to...
How severe is CVE-2021-4011?
CVE-2021-4011 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-4011?
Check the references section above for vendor advisories and patch information. Affected products include: X.Org X Server, Fedoraproject Fedora, Debian Debian Linux.