USN-1275-1: Linux kernel vulnerability
21 November 2011
The system could be made to expose sensitive information locally.
Releases
Packages
- linux - Linux kernel
Details
Peter Huewe discovered an information leak in the handling of reading
security-related TPM data. A local, unprivileged user could read the
results of a previous TPM command. (CVE-2011-1162)
Vasiliy Kulikov discovered that taskstats did not enforce access
restrictions. A local attacker could exploit this to read certain
information, leading to a loss of privacy. (CVE-2011-2494)
Mathieu Desnoyers discovered that the kernel sockets implementation
incorrectly dereferenced user pointers. A local attacker could possibly
exploit this to crash the system. (CVE-2011-4594)
Update instructions
The problem can be corrected by updating your system to the following package versions:
Ubuntu 11.10
-
linux-image-3.0.0-13-powerpc
-
3.0.0-13.22
-
linux-image-3.0.0-13-omap
-
3.0.0-13.22
-
linux-image-3.0.0-13-generic-pae
-
3.0.0-13.22
-
linux-image-3.0.0-13-powerpc64-smp
-
3.0.0-13.22
-
linux-image-3.0.0-13-server
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3.0.0-13.22
-
linux-image-3.0.0-13-generic
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3.0.0-13.22
-
linux-image-3.0.0-13-virtual
-
3.0.0-13.22
-
linux-image-3.0.0-13-powerpc-smp
-
3.0.0-13.22
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.