Ubuntu Security Notice USN-2799-1
5th November, 2015
linux vulnerabilities
A security issue affects these releases of Ubuntu and its
derivatives:
- Ubuntu 15.04
Summary
Several security issues were fixed in the kernel.
Software description
- linux
– Linux kernel
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 version:
- Ubuntu 15.04:
-
linux-image-3.19.0-32-powerpc-e500mc
3.19.0-32.37
-
linux-image-3.19.0-32-powerpc-smp
3.19.0-32.37
-
linux-image-3.19.0-32-powerpc64-emb
3.19.0-32.37
-
linux-image-3.19.0-32-lowlatency
3.19.0-32.37
-
linux-image-3.19.0-32-generic
3.19.0-32.37
-
linux-image-3.19.0-32-powerpc64-smp
3.19.0-32.37
-
linux-image-3.19.0-32-generic-lpae
3.19.0-32.37
To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.
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.