Home / mailings [USN-1386-1] Linux kernel (Natty backport) vulnerabilities
Posted on 06 March 2012
Ubuntu Security==========================
==========================
========================
Ubuntu Security Notice USN-1386-1
March 06, 2012
linux-lts-backport-natty vulnerabilities
==========================
==========================
========================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 10.04 LTS
Summary:
Several security issues were fixed in the kernel.
Software Description:
- linux-lts-backport-natty: Linux kernel backport from Natty
Details:
The linux kernel did not properly account for PTE pages when deciding whi=
ch
task to kill in out of memory conditions. A local, unprivileged could
exploit this flaw to cause a denial of service. (CVE-2011-2498)
A flaw was discovered in the TOMOYO LSM's handling of mount system calls.=
An unprivileged user could oops the system causing a denial of service.
(CVE-2011-2518)
Han-Wen Nienhuys reported a flaw in the FUSE kernel module. A local user
who can mount a FUSE file system could cause a denial of service.
(CVE-2011-3353)
A bug was discovered in the Linux kernel's calculation of OOM (Out of
memory) scores, that would result in the wrong process being killed. A us=
er
could use this to kill the process with the highest OOM score, even if th=
at
process belongs to another user or the system. (CVE-2011-4097)
A flaw was found in KVM's Programmable Interval Timer (PIT). When a virtu=
al
interrupt control is not available a local user could use this to cause a=
denial of service by starting a timer. (CVE-2011-4622)
A flaw was discovered in the XFS filesystem. If a local user mounts a
specially crafted XFS image it could potential execute arbitrary code on
the system. (CVE-2012-0038)
Chen Haogang discovered an integer overflow that could result in memory
corruption. A local unprivileged user could use this to crash the system.=
(CVE-2012-0044)
A flaw was found in the linux kernels IPv4 IGMP query processing. A remot=
e
attacker could exploit this to cause a denial of service. (CVE-2012-0207)=
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 10.04 LTS:
linux-image-2.6.38-13-generic 2.6.38-13.56~lucid1
linux-image-2.6.38-13-generic-pae 2.6.38-13.56~lucid1
linux-image-2.6.38-13-server 2.6.38-13.56~lucid1
linux-image-2.6.38-13-virtual 2.6.38-13.56~lucid1
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 automaticall=
y
perform this as well.
References:
http://www.ubuntu.com/usn/usn-1386-1
CVE-2011-2498, CVE-2011-2518, CVE-2011-3353, CVE-2011-4097,
CVE-2011-4622, CVE-2012-0038, CVE-2012-0044, CVE-2012-0207
Package Information:
https://launchpad.net/ubuntu/+source/linux-lts-backport-natty/2.6.38-13=
=2E56~lucid1
--------------090308070504020102090407
Content-Type: text/plain; charset=UTF-8;
name="Attached Message Part"
Content-Transfer-Encoding: base64
Content-Disposition: attachment;
filename="Attached Message Part"
--------------090308070504020102090407--
------------
