USN-2976-1: Linux kernel (Utopic HWE) vulnerability
16 May 2016
The system could be made to crash or run programs as an administrator.
Releases
Packages
- linux-lts-utopic - Linux hardware enablement kernel from Utopic for Trusty
Details
Philip Pettersson discovered that the Linux kernel's ASN.1 DER decoder did
not properly process certificate files with tags of indefinite length. A
local unprivileged attacker could use this to cause a denial of service
(system crash) or possibly execute arbitrary code with administrative
privileges.
Update instructions
The problem can be corrected by updating your system to the following package versions:
Ubuntu 14.04
-
linux-image-3.16.0-71-generic
-
3.16.0-71.92~14.04.1
-
linux-image-3.16.0-71-generic-lpae
-
3.16.0-71.92~14.04.1
-
linux-image-3.16.0-71-lowlatency
-
3.16.0-71.92~14.04.1
-
linux-image-3.16.0-71-powerpc-e500mc
-
3.16.0-71.92~14.04.1
-
linux-image-3.16.0-71-powerpc-smp
-
3.16.0-71.92~14.04.1
-
linux-image-3.16.0-71-powerpc64-emb
-
3.16.0-71.92~14.04.1
-
linux-image-3.16.0-71-powerpc64-smp
-
3.16.0-71.92~14.04.1
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.
Unless you manually uninstalled the standard kernel metapackages
(e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual,
linux-powerpc), a standard system upgrade will automatically perform
this as well.