Today, August 10, 2016, Canonical published several security notices to inform Ubuntu Linux users about new kernel updates for their distributions, patching several vulnerabilities discovered recently.
The kernel vulnerabilities listed below affect users of Ubuntu 16.04 LTS (Xenial Xerus), Ubuntu 14.04 LTS (Trusty Tahr), and Ubuntu 12.04 LTS (Precise Pangolin), but also all the official flavors that have a release in one of these branches, including but not limited to Kubuntu, Xubuntu, Lubuntu, Edubuntu, Ubuntu MATE, Ubuntu GNOME, and Mythbuntu.
The first security flaw is an integer overflow discovered by Ben Hawkes in Linux kernel’s netfilter implementation. Affecting only 32-bit systems, as well as only Ubuntu 16.04 LTS and Ubuntu 12.04 LTS, the kernel vulnerability could have allowed an unprivileged local attacker to crash the system or execute random code as root.
The second security issue affects all supported Ubuntu OSes. Linux kernel’s keyring implementatio… (read more)
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