USN-1336-1: Linux kernel vulnerability

23 January 2012

The system could be made to run programs as an administrator.

Releases

Packages

Details

Clement Lecigne discovered a bug in the HFS filesystem. A local attacker
could exploit this to cause a kernel oops. (CVE-2011-2203)

A bug was discovered in the XFS filesystem's handling of pathnames. A local
attacker could exploit this to crash the system, leading to a denial of
service, or gain root privileges. (CVE-2011-4077)

A flaw was found in how the Linux kernel handles user-defined key types. An
unprivileged local user could exploit this to crash the system.
(CVE-2011-4110)

A flaw was found in the Journaling Block Device (JBD). A local attacker
able to mount ext3 or ext4 file systems could exploit this to crash the
system, leading to a denial of service. (CVE-2011-4132)

Clement Lecigne discovered a bug in the HFS file system bounds checking.
When a malformed HFS file system is mounted a local user could crash the
system or gain root privileges. (CVE-2011-4330)

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)

Jüri Aedla discovered that the kernel incorrectly handled /proc//mem
permissions. A local attacker could exploit this and gain root privileges.
(CVE-2012-0056)

Update instructions

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

Ubuntu 11.10

After a standard system update you need to reboot your computer to make
all the necessary changes.

Related notices

  • USN-1324-1: linux-image-2.6.32-342-ec2, linux-ec2
  • USN-1556-1: linux-image-2.6.32-347-ec2, linux-ec2
  • USN-1342-1: linux-image-3.0.0-15-generic, linux-lts-backport-oneiric, linux-image-3.0.0-15-virtual, linux-image-3.0.0-15-server, linux-image-3.0.0-15-generic-pae
  • USN-1293-1: linux-image-2.6.35-31-generic-pae, linux-image-2.6.35-31-omap, linux-image-2.6.35-31-powerpc64-smp, linux, linux-image-2.6.35-31-versatile, linux-image-2.6.35-31-powerpc, linux-image-2.6.35-31-generic, linux-image-2.6.35-31-powerpc-smp, linux-image-2.6.35-31-virtual, linux-image-2.6.35-31-server
  • USN-1300-1: linux-image-2.6.31-612-imx51, linux-fsl-imx51
  • USN-1341-1: linux-image-2.6.35-32-virtual, linux-image-2.6.35-32-omap, linux-image-2.6.35-32-generic, linux, linux-image-2.6.35-32-powerpc64-smp, linux-image-2.6.35-32-powerpc, linux-image-2.6.35-32-versatile, linux-image-2.6.35-32-powerpc-smp, linux-image-2.6.35-32-server, linux-image-2.6.35-32-generic-pae
  • USN-1304-1: linux-ti-omap4, linux-image-2.6.38-1209-omap4
  • USN-1340-1: linux-image-3.0.0-15-generic, linux-lts-backport-oneiric, linux-image-3.0.0-15-virtual, linux-image-3.0.0-15-server, linux-image-3.0.0-15-generic-pae
  • USN-1325-1: linux-ti-omap4, linux-image-2.6.35-903-omap4
  • USN-1303-1: linux-image-2.6.32-421-dove, linux-mvl-dove
  • USN-1555-1: linux-image-2.6.32-42-lpia, linux-image-2.6.32-42-server, linux-image-2.6.32-42-generic, linux-image-2.6.32-42-preempt, linux-image-2.6.32-42-versatile, linux-image-2.6.32-42-virtual, linux, linux-image-2.6.32-42-powerpc64-smp, linux-image-2.6.32-42-sparc64, linux-image-2.6.32-42-ia64, linux-image-2.6.32-42-sparc64-smp, linux-image-2.6.32-42-386, linux-image-2.6.32-42-generic-pae, linux-image-2.6.32-42-powerpc-smp, linux-image-2.6.32-42-powerpc
  • USN-1291-1: linux-image-2.6.24-30-generic, linux-image-2.6.24-30-powerpc-smp, linux-image-2.6.24-30-virtual, linux-image-2.6.24-30-mckinley, linux-image-2.6.24-30-sparc64, linux-image-2.6.24-30-386, linux-image-2.6.24-30-xen, linux-image-2.6.24-30-server, linux-image-2.6.24-30-hppa32, linux-image-2.6.24-30-sparc64-smp, linux, linux-image-2.6.24-30-lpia, linux-image-2.6.24-30-openvz, linux-image-2.6.24-30-lpiacompat, linux-image-2.6.24-30-itanium, linux-image-2.6.24-30-powerpc64-smp, linux-image-2.6.24-30-powerpc, linux-image-2.6.24-30-rt, linux-image-2.6.24-30-hppa64
  • USN-1345-1: linux-image-2.6.38-13-versatile, linux-image-2.6.38-13-server, linux-image-2.6.38-13-generic, linux-image-2.6.38-13-powerpc, linux-image-2.6.38-13-virtual, linux-image-2.6.38-13-omap, linux, linux-image-2.6.38-13-powerpc64-smp, linux-image-2.6.38-13-generic-pae, linux-image-2.6.38-13-powerpc-smp
  • USN-1386-1: linux-image-2.6.38-13-server, linux-image-2.6.38-13-generic, linux-lts-backport-natty, linux-image-2.6.38-13-virtual, linux-image-2.6.38-13-generic-pae
  • USN-1312-1: linux-image-2.6.38-13-versatile, linux-image-2.6.38-13-server, linux-image-2.6.38-13-generic, linux-image-2.6.38-13-powerpc, linux-image-2.6.38-13-virtual, linux-image-2.6.38-13-omap, linux, linux-image-2.6.38-13-powerpc64-smp, linux-image-2.6.38-13-generic-pae, linux-image-2.6.38-13-powerpc-smp
  • USN-1332-1: linux-lts-backport-maverick, linux-image-2.6.35-32-virtual, linux-image-2.6.35-32-generic, linux-image-2.6.35-32-server, linux-image-2.6.35-32-generic-pae
  • USN-1323-1: linux-image-2.6.24-30-generic, linux-image-2.6.24-30-powerpc-smp, linux-image-2.6.24-30-virtual, linux-image-2.6.24-30-mckinley, linux-image-2.6.24-30-sparc64, linux-image-2.6.24-30-386, linux-image-2.6.24-30-xen, linux-image-2.6.24-30-server, linux-image-2.6.24-30-hppa32, linux-image-2.6.24-30-sparc64-smp, linux, linux-image-2.6.24-30-lpia, linux-image-2.6.24-30-openvz, linux-image-2.6.24-30-lpiacompat, linux-image-2.6.24-30-itanium, linux-image-2.6.24-30-powerpc64-smp, linux-image-2.6.24-30-powerpc, linux-image-2.6.24-30-rt, linux-image-2.6.24-30-hppa64
  • USN-1299-1: linux-image-2.6.32-341-ec2, linux-ec2
  • USN-1292-1: linux-image-2.6.35-31-generic-pae, linux-lts-backport-maverick, linux-image-2.6.35-31-generic, linux-image-2.6.35-31-virtual, linux-image-2.6.35-31-server
  • USN-1311-1: linux-image-2.6.32-37-powerpc-smp, linux-image-2.6.32-37-ia64, linux-image-2.6.32-37-386, linux-image-2.6.32-37-powerpc64-smp, linux-image-2.6.32-37-preempt, linux-image-2.6.32-37-lpia, linux-image-2.6.32-37-sparc64, linux-image-2.6.32-37-versatile, linux-image-2.6.32-37-sparc64-smp, linux-image-2.6.32-37-powerpc, linux, linux-image-2.6.32-37-server, linux-image-2.6.32-37-virtual, linux-image-2.6.32-37-generic-pae, linux-image-2.6.32-37-generic
  • USN-1330-1: linux-image-3.0.0-1206-omap4, linux-ti-omap4
  • USN-1387-1: linux-lts-backport-maverick, linux-image-2.6.35-32-virtual, linux-image-2.6.35-32-generic, linux-image-2.6.35-32-server, linux-image-2.6.35-32-generic-pae
  • USN-1394-1: linux-ti-omap4, linux-image-2.6.35-903-omap4
  • USN-1356-1: linux-ti-omap4, linux-image-2.6.38-1209-omap4
  • USN-1318-1: linux-image-2.6.31-612-imx51, linux-fsl-imx51
  • USN-1364-1: linux-image-3.0.0-1207-omap4, linux-ti-omap4
  • USN-1361-1: linux-image-2.6.35-32-virtual, linux-image-2.6.35-32-omap, linux-image-2.6.35-32-generic, linux, linux-image-2.6.35-32-powerpc64-smp, linux-image-2.6.35-32-powerpc, linux-image-2.6.35-32-versatile, linux-image-2.6.35-32-powerpc-smp, linux-image-2.6.35-32-server, linux-image-2.6.35-32-generic-pae
  • USN-1301-1: linux-image-2.6.38-13-server, linux-image-2.6.38-13-generic, linux-lts-backport-natty, linux-image-2.6.38-13-virtual, linux-image-2.6.38-13-generic-pae
  • USN-1328-1: linux-image-2.6.32-422-dove, linux-mvl-dove
  • USN-1302-1: linux-ti-omap4, linux-image-2.6.35-903-omap4
  • USN-1337-1: linux-image-2.6.38-13-server, linux-image-2.6.38-13-generic, linux-lts-backport-natty, linux-image-2.6.38-13-virtual, linux-image-2.6.38-13-generic-pae
  • USN-1319-1: linux-ti-omap4, linux-image-2.6.38-1209-omap4
  • USN-1362-1: linux-image-2.6.38-13-versatile, linux-image-2.6.38-13-server, linux-image-2.6.38-13-generic, linux-image-2.6.38-13-powerpc, linux-image-2.6.38-13-virtual, linux-image-2.6.38-13-omap, linux, linux-image-2.6.38-13-powerpc64-smp, linux-image-2.6.38-13-generic-pae, linux-image-2.6.38-13-powerpc-smp
  • USN-1344-1: linux-image-2.6.32-38-386, linux-image-2.6.32-38-powerpc64-smp, linux-image-2.6.32-38-versatile, linux-image-2.6.32-38-virtual, linux-image-2.6.32-38-preempt, linux-image-2.6.32-38-lpia, linux-image-2.6.32-38-generic, linux-image-2.6.32-38-server, linux, linux-image-2.6.32-38-powerpc-smp, linux-image-2.6.32-38-ia64, linux-image-2.6.32-38-generic-pae, linux-image-2.6.32-38-sparc64, linux-image-2.6.32-38-sparc64-smp, linux-image-2.6.32-38-powerpc