Debian Linux Security Advisory 5657-1 - Several vulnerabilities were discovered in the Xorg X server, which may result in privilege escalation if the X server is running privileged or denial of service.
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Ubuntu Security Notice 6721-2 - USN-6721-1 fixed vulnerabilities in X.Org X Server. That fix was incomplete resulting in a regression. This update fixes the problem. It was discovered that X.Org X Server incorrectly handled certain data. An attacker could possibly use this issue to expose sensitive information.
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Ubuntu Security Notice 6721-1 - It was discovered that X.Org X Server incorrectly handled certain data. An attacker could possibly use this issue to expose sensitive information. It was discovered that X.Org X Server incorrectly handled certain glyphs. An attacker could possibly use this issue to cause a crash or expose sensitive information.
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