CVE-2021-4009

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 SProcXFixesCreatePointerBarrier function. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

Category

7.8
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.06%
Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory debian.org Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory gentoo.org Vendor Advisory x.org Vendor Advisory x.org
Affected: n/a xorg-x11-server
Published at:
Updated at:

References

Link Tags
https://lists.x.org/archives/xorg-announce/2021-December/003122.html vendor advisory
https://lists.x.org/archives/xorg-announce/2021-December/003124.html vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PDHYZM6FII35JA7J275MFCJO6ADJUPQX/ vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T57DCF726O5LLTST4NBL5PQ7DLPB46HT/ vendor advisory
https://www.zerodayinitiative.com/advisories/ZDI-21-1548/ vdb entry third party advisory
https://www.debian.org/security/2021/dsa-5027 third party advisory vendor advisory
https://lists.debian.org/debian-lts-announce/2021/12/msg00035.html third party advisory mailing list
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NKLSZCY47QK4RCJFXITYFALCGPJAFXOK/ vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NXTRPFEQLFZ6NT2LPLZEID664RGC3OCC/ vendor advisory
https://security.netapp.com/advisory/ntap-20220114-0004/ third party advisory
https://security.gentoo.org/glsa/202305-30 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-4009?
CVE-2021-4009 has been scored as a high severity vulnerability.
How to fix CVE-2021-4009?
To fix CVE-2021-4009, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-4009 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-4009 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-4009?
CVE-2021-4009 affects n/a xorg-x11-server.
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