what you don't know can hurt you
Home Files News &[SERVICES_TAB]About Contact Add New

Ubuntu Security Notice USN-1389-1

Ubuntu Security Notice USN-1389-1
Posted Mar 7, 2012
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1389-1 - Paolo Bonzini discovered a flaw in Linux's handling of the SG_IO ioctl command. A local user, or user in a VM could exploit this flaw to bypass restrictions and gain read/write access to all data on the affected block device. Sasha Levin discovered a flaw in the permission checking for device assignments requested via the kvm ioctl in the Linux kernel. A local user could use this flaw to crash the system causing a denial of service. Various other issues were also addressed.

tags | advisory, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2011-4127, CVE-2011-4347, CVE-2011-4622, CVE-2012-0038, CVE-2012-0879, CVE-2011-4127, CVE-2011-4347, CVE-2011-4622, CVE-2012-0038, CVE-2012-0879
SHA-256 | 7d7009f9984a3c1066f9fbdae728ca6f232f4e960984205099433cf15e0c787b

Ubuntu Security Notice USN-1389-1

Change Mirror Download
============================================================================
Ubuntu Security Notice USN-1389-1
March 06, 2012

linux 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: Linux kernel

Details:

Paolo Bonzini discovered a flaw in Linux's handling of the SG_IO ioctl
command. A local user, or user in a VM could exploit this flaw to bypass
restrictions and gain read/write access to all data on the affected block
device. (CVE-2011-4127)

Sasha Levin discovered a flaw in the permission checking for device
assignments requested via the kvm ioctl in the Linux kernel. A local user
could use this flaw to crash the system causing a denial of service.
(CVE-2011-4347)

A flaw was found in KVM's Programmable Interval Timer (PIT). When a virtual
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)

Louis Rilling discovered a flaw in Linux kernel's clone command when
CLONE_IO is specified. An unprivileged local user could exploit this to
cause a denial of service. (CVE-2012-0879)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 10.04 LTS:
linux-image-2.6.32-39-386 2.6.32-39.86
linux-image-2.6.32-39-generic 2.6.32-39.86
linux-image-2.6.32-39-generic-pae 2.6.32-39.86
linux-image-2.6.32-39-ia64 2.6.32-39.86
linux-image-2.6.32-39-lpia 2.6.32-39.86
linux-image-2.6.32-39-powerpc 2.6.32-39.86
linux-image-2.6.32-39-powerpc-smp 2.6.32-39.86
linux-image-2.6.32-39-powerpc64-smp 2.6.32-39.86
linux-image-2.6.32-39-preempt 2.6.32-39.86
linux-image-2.6.32-39-server 2.6.32-39.86
linux-image-2.6.32-39-sparc64 2.6.32-39.86
linux-image-2.6.32-39-sparc64-smp 2.6.32-39.86
linux-image-2.6.32-39-versatile 2.6.32-39.86
linux-image-2.6.32-39-virtual 2.6.32-39.86

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.

References:
http://www.ubuntu.com/usn/usn-1389-1
CVE-2011-4127, CVE-2011-4347, CVE-2011-4622, CVE-2012-0038,
CVE-2012-0879

Package Information:
https://launchpad.net/ubuntu/+source/linux/2.6.32-39.86
Login or Register to add favorites

File Archive:

March 2024

  • Su
  • Mo
  • Tu
  • We
  • Th
  • Fr
  • Sa
  • 1
    Mar 1st
    16 Files
  • 2
    Mar 2nd
    0 Files
  • 3
    Mar 3rd
    0 Files
  • 4
    Mar 4th
    32 Files
  • 5
    Mar 5th
    28 Files
  • 6
    Mar 6th
    42 Files
  • 7
    Mar 7th
    17 Files
  • 8
    Mar 8th
    13 Files
  • 9
    Mar 9th
    0 Files
  • 10
    Mar 10th
    0 Files
  • 11
    Mar 11th
    15 Files
  • 12
    Mar 12th
    19 Files
  • 13
    Mar 13th
    21 Files
  • 14
    Mar 14th
    38 Files
  • 15
    Mar 15th
    15 Files
  • 16
    Mar 16th
    0 Files
  • 17
    Mar 17th
    0 Files
  • 18
    Mar 18th
    10 Files
  • 19
    Mar 19th
    32 Files
  • 20
    Mar 20th
    46 Files
  • 21
    Mar 21st
    16 Files
  • 22
    Mar 22nd
    13 Files
  • 23
    Mar 23rd
    0 Files
  • 24
    Mar 24th
    0 Files
  • 25
    Mar 25th
    12 Files
  • 26
    Mar 26th
    31 Files
  • 27
    Mar 27th
    19 Files
  • 28
    Mar 28th
    42 Files
  • 29
    Mar 29th
    0 Files
  • 30
    Mar 30th
    0 Files
  • 31
    Mar 31st
    0 Files

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2022 Packet Storm. All rights reserved.

Services
Security Services
Hosting By
Rokasec
close