CVE-2022-4283 : X.ORG X11 SERVER XKBGETKBDBYNAME REQUEST XKBCOPYNAMES USE AFTER FREE

Description

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.

References

https://access.redhat.com/security/cve/CVE-2022-4283

https://bugzilla.redhat.com/show_bug.cgi?id=2151761

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