Canonical released new Linux kernel security updates for all supported Ubuntu operating systems addressing a total of nine vulnerabilities discovered by various researchers.
The newly patched Linux kernel vulnerabilities affect Ubuntu 17.10 (Artful Aardvark), Ubuntu 17.04 (Zesty Zapus), Ubuntu 16.04 LTS (Xenial Xerus), Ubuntu 14.04 LTS (Trusty Tahr), and Ubuntu 12.04 (Precise Pangolin) ESM (Extended Security Maintenance), as well as all of their official derivatives, including Kubuntu, Lubuntu, etc.
They include a use-after-free vulnerability discovered by Mohamed Ghannam in Linux kernel’s Netlink subsystem (XFRM) and inabilit of the Linux kernel to correctly handle copy-on-write (CoW) of transparent huge pages, which affected all the supported Ubuntu releases and their derivatives.
Also fixed is an issue with Linux kernel’s associative array implementation, which sometimes didn’t properly handle adding a new entry, as well as an out-of-bounds read discovered by A… (read more)
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