There are several security issues in xorg-x11-server: 1) two integer overflow flaws; 2) a memory corruption flaw; 3) an input validation flaw; 4) an information disclosure flaw; and 5) a flaw was found in the X.Org server's XC-SECURITY extension. The risk is MEDIUM. A malicious authorized client could exploit this issue to cause a denial of service (crash), or potentially execute arbitrary code with root privileges on the X.Org server.
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