Home / mailings [USN-1471-1] Linux kernel (Oneiric backport) vulnerabilities
Posted on 12 June 2012
Ubuntu Security==========================
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Ubuntu Security Notice USN-1471-1
June 12, 2012
linux-lts-backport-oneiric vulnerabilities
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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-oneiric: Linux kernel backport from Oneiric
Details:
Andy Adamson discovered a flaw in the Linux kernel's NFSv4 implementation=
=2E
A remote NFS server (attacker) could exploit this flaw to cause a denial =
of
service. (CVE-2011-4131)
A flaw was discovered in the Linux kernel's KVM (kernel virtual machine).=
An administrative user in the guest OS could leverage this flaw to cause =
a
denial of service in the host OS. (CVE-2012-2121)
Schacher Raindel discovered a flaw in the Linux kernel's memory handling
when hugetlb is enabled. An unprivileged local attacker could exploit thi=
s
flaw to cause a denial of service and potentially gain higher privileges.=
(CVE-2012-2133)
Stephan Mueller reported a flaw in the Linux kernel's dl2k network driver=
's
handling of ioctls. An unprivileged local user could leverage this flaw t=
o
cause a denial of service. (CVE-2012-2313)
Timo Warns reported multiple flaws in the Linux kernel's hfsplus
filesystem. An unprivileged local user could exploit these flaws to gain
root system priviliges. (CVE-2012-2319)
Xi Wang discovered a flaw in the Linux kernel's i915 graphics driver
handling of cliprect on 32 bit systems. An unprivileged local attacker
could leverage this flaw to cause a denial of service or potentially gain=
root privileges. (CVE-2012-2383)
Xi Wang discovered a flaw in the Linux kernel's i915 graphics driver
handling of buffer_count on 32 bit systems. An unprivileged local attacke=
r
could leverage this flaw to cause a denial of service or potentially gain=
root privileges. (CVE-2012-2384)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 10.04 LTS:
linux-image-3.0.0-21-generic 3.0.0-21.35~lucid1
linux-image-3.0.0-21-generic-pae 3.0.0-21.35~lucid1
linux-image-3.0.0-21-server 3.0.0-21.35~lucid1
linux-image-3.0.0-21-virtual 3.0.0-21.35~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-1471-1
CVE-2011-4131, CVE-2012-2121, CVE-2012-2133, CVE-2012-2313,
CVE-2012-2319, CVE-2012-2383, CVE-2012-2384
Package Information:
https://launchpad.net/ubuntu/+source/linux-lts-backport-oneiric/3.0.0-2=
1.35~lucid1
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