Ubuntu security notices
USN-3541-1: Linux kernel vulnerabilities
USN-3541-1: Linux kernel vulnerabilities Ubuntu Security Notice USN-3541-1 22nd January, 2018 linux vulnerabilities A security issue affects these releases of Ubuntu and its derivatives: Ubuntu 17.10 Summary Several security issues were addressed in the Linux kernel. Software description linux – Linux kernel Details Jann Horn discovered that microprocessors utilizing speculativeexecution and branch prediction may allow unauthorized memoryreads via sidechannel attacks. This flaw is known as Spectre. Alocal attacker could use this to expose sensitive information,including kernel memory. This update provides mitigations for thei386 (CVE-2017-5753 only), amd64, ppc64el, and s390x architectures.(CVE-2017-5715, CVE-2017-5753) USN-3523-1 mitigated CVE-2017-5754 (Meltdown) for the amd64architecture in Ubuntu 17.10. This update provides the correspondingmitigations for the ppc64el architecture. Original advisory details: Jann Horn discovered that microprocessors utilizing speculative execution and indirect branch prediction may allow unauthorized memory reads via sidechannel attacks. This flaw is known as Meltdown. A [ more… ]