#ubuntu

Ubuntu Security Notice 6027-1 - It was discovered that the Traffic-Control Index implementation in the Linux kernel contained a use-after-free vulnerability. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. Jiasheng Jiang discovered that the HSA Linux kernel driver for AMD Radeon GPU devices did not properly validate memory allocation in certain situations, leading to a null pointer dereference vulnerability. A local attacker could use this to cause a denial of service.

Ubuntu Security Notice 6026-1 - It was discovered that Vim was incorrectly processing Vim buffers. An attacker could possibly use this issue to perform illegal memory access and expose sensitive information. This issue only affected Ubuntu 20.04 LTS. It was discovered that Vim was using freed memory when dealing with regular expressions inside a visual selection. If a user were tricked into opening a specially crafted file, an attacker could crash the application, leading to a denial of service, or possibly achieve code execution with user privileges. This issue only affected Ubuntu 14.04 ESM, Ubuntu 18.04 LTS and Ubuntu 20.04 LTS.

Ubuntu Security Notice 6024-1 - It was discovered that the Traffic-Control Index implementation in the Linux kernel contained a use-after-free vulnerability. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. Lin Ma discovered a race condition in the io_uring subsystem in the Linux kernel, leading to a null pointer dereference vulnerability. A local attacker could use this to cause a denial of service.

Ubuntu Security Notice 6025-1 - It was discovered that the Traffic-Control Index implementation in the Linux kernel contained a use-after-free vulnerability. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. It was discovered that the OverlayFS implementation in the Linux kernel did not properly handle copy up operation in some conditions. A local attacker could possibly use this to gain elevated privileges.

Ubuntu Security Notice 6010-2 - USN-6010-1 fixed vulnerabilities in Firefox. The update introduced several minor regressions. This update fixes the problem. Multiple security issues were discovered in Firefox. If a user were tricked into opening a specially crafted website, an attacker could potentially exploit these to cause a denial of service, obtain sensitive information across domains, or execute arbitrary code. Irvan Kurniawan discovered that Firefox did not properly manage fullscreen notifications using a combination of window.open, fullscreen requests, window.name assignments, and setInterval calls. An attacker could potentially exploit this issue to perform spoofing attacks. Lukas Bernhard discovered that Firefox did not properly manage memory when doing Garbage Collector compaction. An attacker could potentially exploits this issue to cause a denial of service. Zx from qriousec discovered that Firefox did not properly validate the address to free a pointer provided to the mem...

Ubuntu Security Notice 6022-1 - It was discovered that Kamailio did not properly sanitize SIP messages under certain circumstances. An attacker could use this vulnerability to cause a denial of service or possibly execute arbitrary code. This issue only affected Ubuntu 16.04 ESM and 18.04 ESM. It was discovered that Kamailio did not properly validate INVITE requests under certain circumstances. An attacker could use this vulnerability to cause a denial of service or possibly execute arbitrary code.

Ubuntu Security Notice 6023-1 - It was discovered that LibreOffice may be configured to add an empty entry to the Java class path. This may lead to run arbitrary Java code from the current directory.

APNG_Optimizer v1.4 was discovered to contain a buffer overflow via the component /apngopt/ubuntu.png.

Ubuntu Security Notice 5855-4 - USN-5855-1 fixed vulnerabilities in ImageMagick. This update provides the corresponding updates for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM. It was discovered that ImageMagick incorrectly handled certain PNG images. If a user or automated system were tricked into opening a specially crafted PNG file, an attacker could use this issue to cause ImageMagick to stop responding, resulting in a denial of service, or possibly obtain the contents of arbitrary files by including them into images.

An issue was discovered in GitLab Community and Enterprise Edition before 11.11.8, 12 before 12.0.6, and 12.1 before 12.1.6. Gitaly allows injection of command-line flags. This sometimes leads to privilege escalation or remote code execution.