USN-1535-1: Linux kernel vulnerabilities
10 August 2012
Several security issues were fixed in the kernel.
Releases
Packages
- linux - Linux kernel
Details
An error was discovered in the Linux kernel's network TUN/TAP device
implementation. A local user with access to the TUN/TAP interface (which is
not available to unprivileged users until granted by a root user) could
exploit this flaw to crash the system or potential gain administrative
privileges. (CVE-2012-2136)
An error was discovered in the Linux kernel's memory subsystem (hugetlb).
An unprivileged local user could exploit this flaw to cause a denial of
service (crash the system). (CVE-2012-2390)
Update instructions
The problem can be corrected by updating your system to the following package versions:
Ubuntu 10.04
-
linux-image-2.6.32-42-386
-
2.6.32-42.95
-
linux-image-2.6.32-42-powerpc
-
2.6.32-42.95
-
linux-image-2.6.32-42-powerpc64-smp
-
2.6.32-42.95
-
linux-image-2.6.32-42-generic-pae
-
2.6.32-42.95
-
linux-image-2.6.32-42-sparc64
-
2.6.32-42.95
-
linux-image-2.6.32-42-generic
-
2.6.32-42.95
-
linux-image-2.6.32-42-versatile
-
2.6.32-42.95
-
linux-image-2.6.32-42-virtual
-
2.6.32-42.95
-
linux-image-2.6.32-42-server
-
2.6.32-42.95
-
linux-image-2.6.32-42-ia64
-
2.6.32-42.95
-
linux-image-2.6.32-42-sparc64-smp
-
2.6.32-42.95
-
linux-image-2.6.32-42-preempt
-
2.6.32-42.95
-
linux-image-2.6.32-42-powerpc-smp
-
2.6.32-42.95
-
linux-image-2.6.32-42-lpia
-
2.6.32-42.95
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.