exploit the possibilities

Debian Security Advisory 2469-1

Debian Security Advisory 2469-1
Posted May 11, 2012
Authored by Debian | Site debian.org

Debian Linux Security Advisory 2469-1 - Several vulnerabilities have been discovered in the Linux kernel that may lead to a denial of service or privilege escalation.

tags | advisory, denial of service, kernel, vulnerability
systems | linux, debian
advisories | CVE-2011-4086, CVE-2012-0879, CVE-2012-1601, CVE-2012-2123, CVE-2012-2133
MD5 | 3f1dcfb71fe565dd57795656e6ce3a4e

Debian Security Advisory 2469-1

Change Mirror Download
Hash: SHA1

- ----------------------------------------------------------------------
Debian Security Advisory DSA-2469-1 security@debian.org
http://www.debian.org/security/ Dann Frazier
May 10, 2012 http://www.debian.org/security/faq
- ----------------------------------------------------------------------

Package : linux-2.6
Vulnerability : privilege escalation/denial of service
Problem type : local
Debian-specific: no
CVE Id(s) : CVE-2011-4086 CVE-2012-0879 CVE-2012-1601 CVE-2012-2123

Several vulnerabilities have been discovered in the Linux kernel that may lead
to a denial of service or privilege escalation. The Common Vulnerabilities and
Exposures project identifies the following problems:


Eric Sandeen reported an issue in the journaling layer for EXT4 filesystems
(jbd2). Local users can cause buffers to be accessed after they have been
torn down, resulting in a denial of service (DoS) due to a system crash.


Louis Rilling reported two reference counting issues in the CLONE_IO
feature of the kernel. Local users can prevent io context structures
from being freed, resulting in a denial of service.


Michael Ellerman reported an issue in the KVM subsystem. Local users could
cause a denial of service (NULL pointer dereference) by creating VCPUs
before a call to KVM_CREATE_IRQCHIP.


Steve Grubb reported in an issue in fcaps, a filesystem-based capabilities
system. Personality flags set using this mechanism, such as the disabling
of address space randomization, may persist across suid calls.


Shachar Raindel discovered a use-after-free bug in the hugepages
quota implementation. Local users with permission to use hugepages
via the hugetlbfs implementation may be able to cause a denial of
service (system crash).

For the stable distribution (squeeze), this problem has been fixed in version
2.6.32-44. Updates are currently only available for the amd64, i386 and sparc

NOTE: Updated linux-2.6 packages will also be made available in the release
of Debian 6.0.5, scheduled to take place the weekend of 2012.05.12. This
pending update will be version 2.6.32-45, and provides an additional fix for
build failures on some architectures. Users for whom this update is not
critical, and who may wish to avoid multiple reboots, should consider waiting
for the 6.0.5 release before updating, or installing the 2.6.32-45 version
ahead of time from proposed-updates.

The following matrix lists additional source packages that were rebuilt for
compatibility with or to take advantage of this update:

Debian 6.0 (squeeze)
user-mode-linux 2.6.32-1um-4+44

We recommend that you upgrade your linux-2.6 and user-mode-linux packages.

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: http://www.debian.org/security/

Mailing list: debian-security-announce@lists.debian.org
Version: GnuPG v1.4.11 (GNU/Linux)



RSS Feed Subscribe to this comment feed

No comments yet, be the first!

Login or Register to post a comment

File Archive:

September 2019

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

Top Authors In Last 30 Days

File Tags


packet storm

© 2019 Packet Storm. All rights reserved.

Security Services
Hosting By