Gentoo Linux Security Advisory 201710-30 - Multiple vulnerabilities have been found in X.Org Server the worst of which could allow a local attacker to replace shared memory segments. Versions less than 1.19.4 are affected.
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Ubuntu Security Notice 3362-1 - It was discovered that the X.Org X server incorrectly handled endianness conversion of certain X events. An attacker able to connect to an X server, either locally or remotely, could use this issue to crash the server, or possibly execute arbitrary code as an administrator. It was discovered that the X.Org X server incorrectly handled endianness conversion of certain X events. An attacker able to connect to an X server, either locally or remotely, could use this issue to possibly obtain sensitive information. Various other issues were also addressed.
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Gentoo Linux Security Advisory 201704-3 - Multiple vulnerabilities have been found in X.Org server and libraries, the worse of which allowing local attackers to execute arbitrary code. Versions less than 1.19.2 are affected.
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X.org suffers from privilege escalation, weak entropy, and use-after-free vulnerabilities.
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