SECURITY

USN-5136-1: Linux kernel vulnerabilities It was discovered that the f2fs file system in the Linux kernel did not properly validate metadata in some situations. An attacker could use this to construct a malicious f2fs image that, when mounted and operated on, could cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2019-19449) It was discovered that the FUSE user space file system implementation in the Linux kernel did not properly handle bad inodes in some situations. A local attacker could possibly use this to cause a denial of service. (CVE-2020-36322) It was discovered that the Infiniband RDMA userspace connection manager implementation in the Linux kernel contained a race condition leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possible execute arbitrary code. (CVE-2020-36385) Ilja Van Sprundel [ more… ]

USN-5130-1: Linux kernel vulnerabilities Jann Horn discovered a race condition in the tty subsystem of the Linux kernel in the locking for the TIOCSPGRP ioctl(), leading to a use-after- free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2020-29661) Jann Horn discovered that the tty subsystem of the Linux kernel did not use consistent locking in some situations, leading to a read-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly expose sensitive information (kernel memory). (CVE-2020-29660) Source: USN-5130-1: Linux kernel vulnerabilities

USN-5134-1: Docker vulnerability An information disclosure issue was discovered in the command line interface of Docker. A misconfigured credential store could result in supplied credentials being leaked to the public registry, when using the docker login command with a private registry. Source: USN-5134-1: Docker vulnerability

USN-5135-1: Linux kernel vulnerability It was discovered that the Linux kernel did not properly account for the memory usage of certain IPC objects. A local attacker could use this to cause a denial of service (memory exhaustion). Source: USN-5135-1: Linux kernel vulnerability

USN-5133-1: ICU vulnerability It was discovered that ICU contains a use after free issue. An attacker could use this issue to cause a denial of service with crafted input. Source: USN-5133-1: ICU vulnerability