Advisory Published

USN-1193-1: Linux kernel vulnerabilities

First published: Fri Aug 19 2011(Updated: )

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)

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/linux-image-2.6.38-11-generic<2.6.38-11.48
2.6.38-11.48
=11.04
All of
ubuntu/linux-image-2.6.38-11-omap<2.6.38-11.48
2.6.38-11.48
=11.04
All of
ubuntu/linux-image-2.6.38-11-powerpc-smp<2.6.38-11.48
2.6.38-11.48
=11.04
All of
ubuntu/linux-image-2.6.38-11-versatile<2.6.38-11.48
2.6.38-11.48
=11.04
All of
ubuntu/linux-image-2.6.38-11-powerpc64-smp<2.6.38-11.48
2.6.38-11.48
=11.04
All of
ubuntu/linux-image-2.6.38-11-virtual<2.6.38-11.48
2.6.38-11.48
=11.04
All of
ubuntu/linux-image-2.6.38-11-generic-pae<2.6.38-11.48
2.6.38-11.48
=11.04
All of
ubuntu/linux-image-2.6.38-11-powerpc<2.6.38-11.48
2.6.38-11.48
=11.04
All of
ubuntu/linux-image-2.6.38-11-server<2.6.38-11.48
2.6.38-11.48
=11.04

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