USN-2794-1: Linux kernel vulnerabilities
5 November 2015
Several security issues were fixed in the kernel.
Releases
Packages
- 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 versions:
Ubuntu 14.04
-
linux-image-3.13.0-67-generic
-
3.13.0-67.110
-
linux-image-3.13.0-67-generic-lpae
-
3.13.0-67.110
-
linux-image-3.13.0-67-lowlatency
-
3.13.0-67.110
-
linux-image-3.13.0-67-powerpc-e500
-
3.13.0-67.110
-
linux-image-3.13.0-67-powerpc-e500mc
-
3.13.0-67.110
-
linux-image-3.13.0-67-powerpc-smp
-
3.13.0-67.110
-
linux-image-3.13.0-67-powerpc64-emb
-
3.13.0-67.110
-
linux-image-3.13.0-67-powerpc64-smp
-
3.13.0-67.110
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.
References
Related notices
- USN-2795-1: linux-lts-trusty, linux-image-3.13.0-67-generic, linux-image-3.13.0-67-generic-lpae
- USN-2797-1: linux-image-3.16.0-52-lowlatency, linux-image-3.16.0-52-powerpc-e500mc, linux-image-extra-3.16.0-52-generic, linux-image-3.16.0-52-powerpc64-smp, linux-image-3.16.0-52-powerpc64-emb, linux-image-3.16.0-52-generic, linux-image-3.16.0-52-generic-lpae, linux-image-3.16.0-52-powerpc-smp, linux-lts-utopic
- USN-2796-1: linux-image-3.2.0-1473-omap4, linux-ti-omap4
- USN-2799-1: linux-image-3.19.0-32-powerpc-smp, linux-image-3.19.0-32-powerpc64-smp, linux-image-3.19.0-32-generic, linux-image-3.19.0-32-generic-lpae, linux-image-3.19.0-32-powerpc64-emb, linux, linux-image-3.19.0-32-powerpc-e500mc, linux-image-3.19.0-32-lowlatency
- USN-2792-1: linux-image-3.2.0-93-generic, linux-image-3.2.0-93-powerpc64-smp, linux-image-3.2.0-93-omap, linux-image-3.2.0-93-powerpc-smp, linux-image-3.2.0-93-virtual, linux-image-3.2.0-93-highbank, linux-image-3.2.0-93-generic-pae, linux
- USN-2798-1: linux-image-3.19.0-32-powerpc64-smp, linux-image-3.19.0-32-generic, linux-image-3.19.0-32-generic-lpae, linux-image-3.19.0-32-powerpc64-emb, linux-image-extra-3.19.0-32-generic, linux-image-3.19.0-32-powerpc-e500mc, linux-image-3.19.0-32-powerpc-smp, linux-lts-vivid, linux-image-3.19.0-32-lowlatency