Today, November 11, 2016, Canonical published several security advisories to inform users of the Ubuntu Linux operating system about new kernel updates that patch multiple vulnerabilities discovered lately.It appears that there are a total of five security issues affecting all supported Ubuntu OSes, including Ubuntu 12.04 LTS (Precise Pangolin), Ubuntu 14.04 LTS (Trusty Tahr), Ubuntu 16.04 LTS (Xenial Xerus), and Ubuntu 16.10 (Yakkety Yak), including the Raspberry Pi port, as well as 64-bit and 3-bit variants, and all their official derivatives, such as Kubuntu, Xubuntu, Lubuntu, Ubuntu MATE, Ubuntu GNOME, and Ubuntu Kylin.
The first vulnerability is a buffer overflow discovered by Ondrej Kozina in Linux kernel's keyring interface when displaying timeout events via /proc/keys. It affects all the Ubuntu releases mentioned above, allowing a local attacker to crash the system by causing a denial of service. The second securit... (read more)
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