A flaw was found in X.Org Server before xorg-x11-server 1.20.9. An Integer underflow leading to heap-buffer overflow may lead to a privilege escalation vulnerability. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
                
            References
                    | Link | Resource | 
|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=1869144 | Issue Tracking Third Party Advisory | 
| https://lists.x.org/archives/xorg-announce/2020-August/003058.html | Mailing List Patch Vendor Advisory | 
| https://security.gentoo.org/glsa/202012-01 | Third Party Advisory | 
| https://usn.ubuntu.com/4488-2/ | Third Party Advisory | 
| https://www.zerodayinitiative.com/advisories/ZDI-20-1419/ | Third Party Advisory VDB Entry | 
| https://bugzilla.redhat.com/show_bug.cgi?id=1869144 | Issue Tracking Third Party Advisory | 
| https://lists.x.org/archives/xorg-announce/2020-August/003058.html | Mailing List Patch Vendor Advisory | 
| https://security.gentoo.org/glsa/202012-01 | Third Party Advisory | 
| https://usn.ubuntu.com/4488-2/ | Third Party Advisory | 
| https://www.zerodayinitiative.com/advisories/ZDI-20-1419/ | Third Party Advisory VDB Entry | 
Configurations
                    Configuration 1 (hide)
            
            
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Configuration 2 (hide)
            
            
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History
                    29 Aug 2025, 13:42
| Type | Values Removed | Values Added | 
|---|---|---|
| CPE | cpe:2.3:a:x.org:x_server:*:*:*:*:*:*:*:* | |
| First Time | 
        
        X.org x Server
         | 
21 Nov 2024, 05:03
| Type | Values Removed | Values Added | 
|---|---|---|
| References | () https://bugzilla.redhat.com/show_bug.cgi?id=1869144 - Issue Tracking, Third Party Advisory | |
| References | () https://lists.x.org/archives/xorg-announce/2020-August/003058.html - Mailing List, Patch, Vendor Advisory | |
| References | () https://security.gentoo.org/glsa/202012-01 - Third Party Advisory | |
| References | () https://usn.ubuntu.com/4488-2/ - Third Party Advisory | |
| References | () https://www.zerodayinitiative.com/advisories/ZDI-20-1419/ - Third Party Advisory, VDB Entry | 
Information
                Published : 2020-09-15 19:15
Updated : 2025-08-29 13:42
NVD link : CVE-2020-14362
Mitre link : CVE-2020-14362
CVE.ORG link : CVE-2020-14362
JSON object : View
Products Affected
                x.org
- x_server
 
canonical
- ubuntu_linux
 
redhat
- enterprise_linux
 
CWE
                
                    
                        
                        CWE-191
                        
            Integer Underflow (Wrap or Wraparound)
