#linux

Red Hat Security Advisory 2023-5244-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Issues addressed include information leakage, out of bounds write, and use-after-free vulnerabilities.

Red Hat Security Advisory 2023-5236-01 - The libwebp packages provide a library and tools for the WebP graphics format. WebP is an image format with a lossy compression of digital photographic images. WebP consists of a codec based on the VP8 format, and a container based on the Resource Interchange File Format. Webmasters, web developers and browser developers can use WebP to compress, archive, and distribute digital images more efficiently. Issues addressed include a buffer overflow vulnerability.

Ubuntu Security Notice 6383-1 - Jana Hofmann, Emanuele Vannacci, Cedric Fournet, Boris Kopf, and Oleksii Oleksenko discovered that some AMD processors could leak stale data from division operations in certain situations. A local attacker could possibly use this to expose sensitive information. It was discovered that the ARM64 KVM implementation in the Linux kernel did not properly restrict hypervisor memory access. An attacker in a guest VM could use this to execute arbitrary code in the host OS.

Red Hat Security Advisory 2023-5249-01 - The ncurses library routines are a terminal-independent method of updating character screens with reasonable optimization. The ncurses packages contain support utilities including a terminfo compiler tic, a decompiler infocmp, clear, tput, tset, and a termcap conversion tool captoinfo.

Red Hat Security Advisory 2023-5245-01 - The linux-firmware packages contain all of the firmware files that are required by various devices to operate. Issues addressed include an information leakage vulnerability.

Logging Subsystem 5.5.16 - Red Hat OpenShift Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2023-4456: A flaw was found in openshift-logging LokiStack. The key used for caching is just the token, which is too broad. This issue allows a user with a token valid for one action to execute other actions as long as the authorization allowing the original action is still cached.

Incorrect verifier pruning in BPF in Linux Kernel >=5.4 leads to unsafe code paths being incorrectly marked as safe, resulting in arbitrary read/write in kernel memory, lateral privilege escalation, and container escape.

An issue was discovered in Croc through 9.6.5. The shared secret, located on a command line, can be read by local users who list all processes and their arguments.

NVIDIA Cumulus Linux contains a vulnerability in neighmgrd and nlmanager where an attacker on an adjacent network may cause an uncaught exception by injecting a crafted packet. A successful exploit may lead to denial of service.

Earlier this year, Red Hat engineering took a close look at how to accelerate compression within applications by using 4th Gen Intel Xeon Scalable Processors that include Intel® QuickAssist Technology (Intel® QAT), which can accelerate both compression and encryption. Today we will examine the encryption capabilities and show how to achieve major performance improvements with leading load balancing applications. HAProxy and F5’s NGINX were tested running on Red Hat Enterprise Linux 9.2. Setting up We started with a RHEL 9.2 installation on a system with an Intel Xeon Platinum 8480+ p