Ubuntu 20.04 LTS : Linux kernel (Azure) vulnerabilities (USN-8243-1)

"The remote Ubuntu 20.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-8243-1 advisory. Qualys discovered that several vulnerabilities existed in the AppArmor Linux kernel Security Module LSM. An unprivileged local attacker could use these...

USN-5806-3 ruby2.7 vulnerability

USN-5806-1 fixed vulnerabilities in Ruby. This update fixes the problem for Ubuntu 20.04 LTS. Original advisory details: Hiroshi Tokumaru discovered that Ruby did not properly handle certain user input for applications which generate HTTP responses using cgi gem. An attacker could possibly use th...

USN-5759-2 libbpf vulnerabilities

USN-5759-1 fixed vulnerabilities in LibBPF. This update provides the corresponding updates for Ubuntu 20.04 ESM. Original advisory details: It was discovered that LibBPF incorrectly handled certain memory operations under certain circumstances. An attacker could possibly use this issue to cause...

USN-4385-2 intel-microcode regression

USN-4385-1 provided updated Intel Processor Microcode. Unfortunately, that update prevented certain processors in the Intel Skylake family 064EH from booting successfully. Additonally, on Ubuntu 20.04 LTS, late loading of microcode was enabled, which could lead to system instability. This update...