Arch Linux: Information disclosure (CVE-2021-20269)

A security issue was found in kexec-tools where vmcore-dmesg.txt extracted from the vmcore of a previous kernel panic is created world-readable. It is possible that this could be used to leak kernel internal information from a previous execution if it was output to the ring buffer or part of the panic backtrace. An unprivileged user with a local account can use this to extract kernel internal information resulting in an information leak.