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.
63eddffde35de0427f38fd9d9a39600951883ee472d11a47f0c8ae006c4c1d75Gentoo Linux Security Advisory 201701-64 - Multiple vulnerabilities have been found in X.Org X Server, the worst of which may allow authenticated attackers to read from or send information to arbitrary X11 clients. Versions less than 1.18.4 are affected.
73e2e4f1303187d367e8f18e99cdc9c6afef497aaa8fe6fed6db24b7ecf4f370Ubuntu Security Notice 2500-1 - Olivier Fourdan discovered that the X.Org X server incorrectly handled XkbSetGeometry requests resulting in an information leak. An attacker able to connect to an X server, either locally or remotely, could use this issue to possibly obtain sensitive information. It was discovered that the X.Org X server incorrectly handled certain trapezoids. An attacker able to connect to an X server, either locally or remotely, could use this issue to possibly crash the server. This issue only affected Ubuntu 12.04 LTS. Various other issues were also addressed.
fe374163e95255581fae4cb946e899828286ba84ef6853a6cf93f337dfe7c699Mandriva Linux Security Advisory 2014-020 - Bryan Quigley discovered an integer underflow in the Xorg X server which could lead to denial of service or the execution of arbitrary code.
f497ed58fe819404fa09b48ffaeab9b2769c44673fdfd53039e827b4189cb3c9Red Hat Security Advisory 2013-1868-01 - X.Org is an open source implementation of the X Window System. It provides the basic low-level functionality that full-fledged graphical user interfaces are designed upon. An integer overflow, which led to a heap-based buffer overflow, was found in the way X.Org server handled trapezoids. A malicious, authorized client could use this flaw to crash the X.Org server or, potentially, execute arbitrary code with root privileges. All xorg-x11-server users are advised to upgrade to these updated packages, which contain a backported patch to correct this issue.
9c3aa5ef889f82d8df9aff584669d589f79154f6c70004f0344c0c04e0c248dfDebian Linux Security Advisory 2822-1 - Bryan Quigley discovered an integer underflow in the Xorg X server which could lead to denial of service or the execution of arbitrary code.
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