X Server
CVE-2022-4283
HIGH
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
1DescriptionNVD
A vulnerability was found in X.Org. This security flaw occurs because the XkbCopyNames function left a dangling pointer to freed memory, resulting in out-of-bounds memory access on subsequent XkbGetKbdByName requests.. This issue can lead to local privileges elevation on systems where the X server is running privileged and remote code execution for ssh X forwarding sessions.
AnalysisAI
A vulnerability was found in X.Org. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. No vendor patch available.
Technical ContextAI
This vulnerability is classified as Use After Free (CWE-416), which allows attackers to access freed memory to execute arbitrary code or crash the application. A vulnerability was found in X.Org. This security flaw occurs because the XkbCopyNames function left a dangling pointer to freed memory, resulting in out-of-bounds memory access on subsequent XkbGetKbdByName requests.. This issue can lead to local privileges elevation on systems where the X server is running privileged and remote code execution for ssh X forwarding sessions. Affected products include: X.Org X Server, Fedoraproject Fedora, Redhat Enterprise Linux, Debian Debian Linux.
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Use smart pointers or garbage-collected languages. Set pointers to NULL after freeing. Enable memory sanitizers.
A flaw was found in xorg-x11-server before 1.20.3. Rated medium severity (CVSS 6.6), this vulnerability is low attack co
"" In X.Org X Server 1.20.4, there is a stack-based buffer overflow in the function XQueryKeymap. Rated high severity (C
In the X.Org X server before 2017-06-19, a user authenticated to an X Session could crash or execute code in the context
Use-after-free in the GLX dispatch layer of X.Org X Server and Xwayland allows an authenticated X client to corrupt heap
A vulnerability was found in X.Org. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, low atta
A vulnerability was found in X.Org. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, low atta
A vulnerability was found in X.Org. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, low atta
A vulnerability was found in X.Org. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, low atta
A vulnerability was found in X.Org. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, low atta
A vulnerability classified as critical was found in X.org Server. Rated high severity (CVSS 8.8), this vulnerability is
A out-of-bounds write flaw was found in the xorg-x11-server. Rated high severity (CVSS 7.8), this vulnerability is low a
A flaw was found in xorg-server. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. This Out-o
Same weakness CWE-416 – Use After Free
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External POC / Exploit Code
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