Red Hat Security Advisory 2021-4326-02 - The libX11 packages contain the core X11 protocol client library.
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Red Hat Security Advisory 2021-3653-01 - Red Hat Advanced Cluster Management 2.1.11 security fix and container updates are available.
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Red Hat Security Advisory 2021-3477-01 - The redhat-virtualization-host packages provide the Red Hat Virtualization Host. These packages include redhat-release-virtualization-host. Red Hat Virtualization Hosts are installed using a special build of Red Hat Enterprise Linux with only the packages required to host virtual machines. RHVH features a Cockpit user interface for monitoring the host's resources and performing administrative tasks. Issues addressed include code execution, out of bounds write, and use-after-free vulnerabilities.
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Red Hat Security Advisory 2021-3454-01 - Red Hat Advanced Cluster Management for Kubernetes 2.3.2 images Red Hat Advanced Cluster Management for Kubernetes provides the capabilities to address common challenges that administrators and site reliability engineers face as they work across a range of public and private cloud environments. Clusters and applications are all visible and managed from a single console—with security policy built in. This advisory contains the container images for Red Hat Advanced Cluster Management for Kubernetes, which fix several bugs and security issues.
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Red Hat Security Advisory 2021-3296-01 - The libX11 packages contain the core X11 protocol client library.
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Debian Linux Security Advisory 4920-1 - Roman Fiedler reported that missing length validation in various functions provided by libx11, the X11 client-side library, allow to inject X11 protocol commands on X clients, leading to authentication bypass, denial of service or potentially the execution of arbitrary code.
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Gentoo Linux Security Advisory 202105-16 - A vulnerability in X.Org X11 library could lead to a Denial of Service condition. Versions less than 1.7.1 are affected.
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Ubuntu Security Notice 4966-2 - USN-4966-1 fixed a vulnerability in libx11. This update provides the corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM. It was discovered that libx11 incorrectly validated certain parameter lengths. A remote attacker could possibly use this issue to trick libx11 into emitting extra X protocol requests. Various other issues were also addressed.
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Ubuntu Security Notice 4966-1 - It was discovered that libx11 incorrectly validated certain parameter lengths. A remote attacker could possibly use this issue to trick libx11 into emitting extra X protocol requests.
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A missing length check in libX11 allows data from LookupColor requests to mess up the client-server communication protocol and inject malicious X server requests.
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