USN-2798-1: Linux kernel (Vivid HWE) vulnerabilities
5 November 2015
Several security issues were fixed in the kernel.
Releases
Packages
- linux-lts-vivid - Linux hardware enablement kernel from Vivid
Details
It was discovered that in certain situations, a directory could be renamed
outside of a bind mounted location. An attacker could use this to escape
bind mount containment and gain access to sensitive information.
(CVE-2015-2925)
Moein Ghasemzadeh discovered that the USB WhiteHEAT serial driver contained
hardcoded attributes about the USB devices. An attacker could construct a
fake WhiteHEAT USB device that, when inserted, causes a denial of service
(system crash). (CVE-2015-5257)
Update instructions
The problem can be corrected by updating your system to the following package versions:
Ubuntu 14.04
-
linux-image-3.19.0-32-generic
-
3.19.0-32.37~14.04.1
-
linux-image-3.19.0-32-generic-lpae
-
3.19.0-32.37~14.04.1
-
linux-image-3.19.0-32-lowlatency
-
3.19.0-32.37~14.04.1
-
linux-image-3.19.0-32-powerpc-e500mc
-
3.19.0-32.37~14.04.1
-
linux-image-3.19.0-32-powerpc-smp
-
3.19.0-32.37~14.04.1
-
linux-image-3.19.0-32-powerpc64-emb
-
3.19.0-32.37~14.04.1
-
linux-image-3.19.0-32-powerpc64-smp
-
3.19.0-32.37~14.04.1
After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed. If
you use linux-restricted-modules, you have to update that package as
well to get modules which work with the new kernel version. Unless you
manually uninstalled the standard kernel metapackages (e.g. linux-generic,
linux-server, linux-powerpc), a standard system upgrade will automatically
perform this as well.