USN-1193-1: Linux kernel vulnerabilities

Releases

• Ubuntu 11.04

Packages

• linux - Linux kernel

Details

Timo Warns discovered that the GUID partition parsing routines did not
correctly validate certain structures. A local attacker with physical
access could plug in a specially crafted block device to crash the system,
leading to a denial of service. (CVE-2011-1577)

Phil Oester discovered that the network bonding system did not correctly
handle large queues. On some systems, a remote attacker could send
specially crafted traffic to crash the system, leading to a denial of
service. (CVE-2011-1581)

Ben Hutchings reported a flaw in the kernel's handling of corrupt LDM
partitions. A local user could exploit this to cause a denial of service or
escalate privileges. (CVE-2011-2182)

Vasiliy Kulikov discovered that taskstats listeners were not correctly
handled. A local attacker could expoit this to exhaust memory and CPU
resources, leading to a denial of service. (CVE-2011-2484)

Sami Liedes discovered that ext4 did not correctly handle missing root
inodes. A local attacker could trigger the mount of a specially crafted
filesystem to cause the system to crash, leading to a denial of service.
(CVE-2011-2493)

A flaw was discovered in the Linux kernel's AppArmor security interface
when invalid information was written to it. An unprivileged local user
could use this to cause a denial of service on the system. (CVE-2011-3619)

Scot Doyle discovered that the bridge networking interface incorrectly
handled certain network packets. A remote attacker could exploit this to
crash the system, leading to a denial of service. (CVE-2011-4087)

A bug was found in the way headroom check was performed in
udp6_ufo_fragment() function. A remote attacker could use this flaw to
crash the system. (CVE-2011-4326)

Update instructions

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

Ubuntu 11.04

• linux-image-2.6.38-11-generic - 2.6.38-11.48
• linux-image-2.6.38-11-omap - 2.6.38-11.48
• linux-image-2.6.38-11-powerpc-smp - 2.6.38-11.48
• linux-image-2.6.38-11-versatile - 2.6.38-11.48
• linux-image-2.6.38-11-powerpc64-smp - 2.6.38-11.48
• linux-image-2.6.38-11-virtual - 2.6.38-11.48
• linux-image-2.6.38-11-generic-pae - 2.6.38-11.48
• linux-image-2.6.38-11-powerpc - 2.6.38-11.48
• linux-image-2.6.38-11-server - 2.6.38-11.48

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

References

• CVE-2011-1577
• CVE-2011-1581
• CVE-2011-2182
• CVE-2011-2484
• CVE-2011-2493
• CVE-2011-3619
• CVE-2011-4087
• CVE-2011-4326

Related notices

• USN-1202-1: linux-ti-omap4, linux-image-2.6.35-903-omap4
• USN-1203-1: linux-image-2.6.32-218-dove, linux-mvl-dove
• USN-1183-1: linux-image-2.6.35-30-powerpc, linux-image-2.6.35-30-versatile, linux-image-2.6.35-30-powerpc64-smp, linux-image-2.6.35-30-generic-pae, linux, linux-image-2.6.35-30-omap, linux-image-2.6.35-30-generic, linux-image-2.6.35-30-server, linux-image-2.6.35-30-virtual, linux-image-2.6.35-30-powerpc-smp
• USN-1170-1: linux-image-2.6.24-29-sparc64, linux-image-2.6.24-29-server, linux-image-2.6.24-29-powerpc, linux-image-2.6.24-29-rt, linux-image-2.6.24-29-powerpc64-smp, linux-image-2.6.24-29-hppa32, linux-image-2.6.24-29-generic, linux-image-2.6.24-29-virtual, linux-image-2.6.24-29-hppa64, linux-image-2.6.24-29-sparc64-smp, linux-image-2.6.24-29-powerpc-smp, linux, linux-image-2.6.24-29-mckinley, linux-image-2.6.24-29-itanium, linux-image-2.6.24-29-xen, linux-image-2.6.24-29-lpia, linux-image-2.6.24-29-openvz, linux-image-2.6.24-29-386, linux-image-2.6.24-29-lpiacompat
• USN-1218-1: linux, linux-image-2.6.32-34-powerpc64-smp, linux-image-2.6.32-34-powerpc, linux-image-2.6.32-34-powerpc-smp, linux-image-2.6.32-34-sparc64, linux-image-2.6.32-34-server, linux-image-2.6.32-34-versatile, linux-image-2.6.32-34-386, linux-image-2.6.32-34-ia64, linux-image-2.6.32-34-lpia, linux-image-2.6.32-34-virtual, linux-image-2.6.32-34-preempt, linux-image-2.6.32-34-generic, linux-image-2.6.32-34-generic-pae, linux-image-2.6.32-34-sparc64-smp
• USN-1208-1: linux-image-2.6.32-418-dove, linux-mvl-dove
• USN-1204-1: linux-image-2.6.31-610-imx51, linux-fsl-imx51
• USN-1256-1: linux-image-2.6.38-12-virtual, linux-image-2.6.38-12-generic-pae, linux-image-2.6.38-12-server, linux-image-2.6.38-12-generic, linux-lts-backport-natty
• USN-1187-1: linux-image-2.6.35-30-generic-pae, linux-image-2.6.35-30-server, linux-image-2.6.35-30-generic, linux-lts-backport-maverick, linux-image-2.6.35-30-virtual
• USN-1212-1: linux-ti-omap4, linux-image-2.6.38-1209-omap4
• USN-1216-1: linux-image-2.6.32-318-ec2, linux-ec2
• USN-1341-1: linux-image-2.6.35-32-server, linux-image-2.6.35-32-versatile, linux-image-2.6.35-32-generic-pae, linux-image-2.6.35-32-omap, linux-image-2.6.35-32-powerpc, linux, linux-image-2.6.35-32-virtual, linux-image-2.6.35-32-powerpc64-smp, linux-image-2.6.35-32-generic, linux-image-2.6.35-32-powerpc-smp
• USN-1332-1: linux-image-2.6.35-32-server, linux-image-2.6.35-32-generic-pae, linux-image-2.6.35-32-virtual, linux-lts-backport-maverick, linux-image-2.6.35-32-generic
• USN-1383-1: linux-ti-omap4, linux-image-2.6.38-1209-omap4
• USN-1392-1: linux-image-2.6.31-612-imx51, linux-fsl-imx51
• USN-1394-1: linux-ti-omap4, linux-image-2.6.35-903-omap4
• USN-1390-1: linux-image-2.6.24-31-mckinley, linux-image-2.6.24-31-hppa32, linux-image-2.6.24-31-lpia, linux-image-2.6.24-31-powerpc64-smp, linux-image-2.6.24-31-lpiacompat, linux-image-2.6.24-31-powerpc, linux-image-2.6.24-31-sparc64, linux-image-2.6.24-31-generic, linux-image-2.6.24-31-virtual, linux, linux-image-2.6.24-31-server, linux-image-2.6.24-31-xen, linux-image-2.6.24-31-386, linux-image-2.6.24-31-hppa64, linux-image-2.6.24-31-powerpc-smp, linux-image-2.6.24-31-itanium, linux-image-2.6.24-31-openvz, linux-image-2.6.24-31-rt, linux-image-2.6.24-31-sparc64-smp
• USN-1205-1: linux-image-2.6.35-30-generic-pae, linux-image-2.6.35-30-server, linux-image-2.6.35-30-generic, linux-lts-backport-maverick, linux-image-2.6.35-30-virtual
• USN-1186-1: linux-image-2.6.24-29-sparc64, linux-image-2.6.24-29-server, linux-image-2.6.24-29-powerpc, linux-image-2.6.24-29-rt, linux-image-2.6.24-29-powerpc64-smp, linux-image-2.6.24-29-hppa32, linux-image-2.6.24-29-generic, linux-image-2.6.24-29-virtual, linux-image-2.6.24-29-hppa64, linux-image-2.6.24-29-sparc64-smp, linux-image-2.6.24-29-powerpc-smp, linux, linux-image-2.6.24-29-mckinley, linux-image-2.6.24-29-itanium, linux-image-2.6.24-29-xen, linux-image-2.6.24-29-lpia, linux-image-2.6.24-29-openvz, linux-image-2.6.24-29-386, linux-image-2.6.24-29-lpiacompat
• USN-1201-1: linux-image-2.6.35-30-powerpc, linux-image-2.6.35-30-versatile, linux-image-2.6.35-30-powerpc64-smp, linux-image-2.6.35-30-generic-pae, linux, linux-image-2.6.35-30-omap, linux-image-2.6.35-30-generic, linux-image-2.6.35-30-server, linux-image-2.6.35-30-virtual, linux-image-2.6.35-30-powerpc-smp
• USN-1379-1: linux-image-2.6.35-32-server, linux-image-2.6.35-32-versatile, linux-image-2.6.35-32-generic-pae, linux-image-2.6.35-32-omap, linux-image-2.6.35-32-powerpc, linux, linux-image-2.6.35-32-virtual, linux-image-2.6.35-32-powerpc64-smp, linux-image-2.6.35-32-generic, linux-image-2.6.35-32-powerpc-smp
• USN-1387-1: linux-image-2.6.35-32-server, linux-image-2.6.35-32-generic-pae, linux-image-2.6.35-32-virtual, linux-lts-backport-maverick, linux-image-2.6.35-32-generic
• USN-1294-1: linux-lts-backport-oneiric, linux-image-3.0.0-13-generic, linux-image-3.0.0-13-virtual, linux-image-3.0.0-13-server, linux-image-3.0.0-13-generic-pae
• USN-1304-1: linux-ti-omap4, linux-image-2.6.38-1209-omap4
• USN-1292-1: linux-image-2.6.35-31-generic, linux-image-2.6.35-31-server, linux-lts-backport-maverick, linux-image-2.6.35-31-generic-pae, linux-image-2.6.35-31-virtual
• USN-1302-1: linux-ti-omap4, linux-image-2.6.35-903-omap4
• USN-1299-1: linux-image-2.6.32-341-ec2, linux-ec2
• USN-1303-1: linux-image-2.6.32-421-dove, linux-mvl-dove
• USN-1293-1: linux-image-2.6.35-31-generic, linux-image-2.6.35-31-server, linux-image-2.6.35-31-versatile, linux, linux-image-2.6.35-31-powerpc, linux-image-2.6.35-31-omap, linux-image-2.6.35-31-powerpc64-smp, linux-image-2.6.35-31-generic-pae, linux-image-2.6.35-31-virtual, linux-image-2.6.35-31-powerpc-smp
• USN-1311-1: linux-image-2.6.32-37-powerpc-smp, linux-image-2.6.32-37-generic-pae, linux, linux-image-2.6.32-37-generic, linux-image-2.6.32-37-virtual, linux-image-2.6.32-37-ia64, linux-image-2.6.32-37-versatile, linux-image-2.6.32-37-powerpc64-smp, linux-image-2.6.32-37-sparc64, linux-image-2.6.32-37-sparc64-smp, linux-image-2.6.32-37-386, linux-image-2.6.32-37-powerpc, linux-image-2.6.32-37-preempt, linux-image-2.6.32-37-server, linux-image-2.6.32-37-lpia