Vulnerability CVE-2021-3472
Published: 2021-04-26

Description:
A flaw was found in xorg-x11-server in versions before 1.20.11. An integer underflow can occur in xserver which can lead to a local privilege escalation. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

Type:

CWE-191

 (Integer Underflow (Wrap or Wraparound))

 References:
https://lists.x.org/archives/xorg-announce/2021-April/003080.html
https://seclists.org/oss-sec/2021/q2/20
https://www.zerodayinitiative.com/advisories/ZDI-21-463/
https://bugzilla.redhat.com/show_bug.cgi?id=1944167
https://www.debian.org/security/2021/dsa-4893
https://www.tenable.com/plugins/nessus/148701
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