Ubuntu Security Notice 5437-1 - Tobias Stoeckmann discovered that libXfixes incorrectly handled certain inputs. An attacker could possibly use this issue to cause a denial of service, or possibly execute arbitrary code.
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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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Slackware Security Advisory - New x11 packages are available for Slackware 13.0, 13.1, 13.37, 14.0, 14.1, 14.2, and -current to fix security issues.
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