[USN-1294-1] Linux kernel (Oneiric backport) vulnerabilities

========================================================================== Ubuntu Security Notice USN-1294-1 December 08, 2011 linux-lts-backport-oneiric 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-lts-backport-oneiric: Linux kernel backport from Oneiric Details: Peter Huewe discovered an information leak in the handling of reading security-related TPM data. A local, unprivileged user could read the results of a previous TPM command. (CVE-2011-1162) Vasiliy Kulikov discovered that taskstats did not enforce access restrictions. A local attacker could exploit this to read certain information, leading to a loss of privacy. (CVE-2011-2494) Qianfeng Zhang 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-2011-2942) Yasuaki Ishimatsu discovered a flaw in the kernel's clock implementation. A local unprivileged attacker could exploit this causing a denial of service. (CVE-2011-3209) Zheng Liu discovered a flaw in how the ext4 filesystem splits extents. A local unprivileged attacker could exploit this to crash the system, leading to a denial of service. (CVE-2011-3638) Nick Bowler discovered the kernel GHASH message digest algorithm incorrectly handled error conditions. A local attacker could exploit this to cause a kernel oops. (CVE-2011-4081) 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 10.04 LTS: linux-image-3.0.0-13-generic 3.0.0-13.22~lucid1 linux-image-3.0.0-13-generic-pae 3.0.0-13.22~lucid1 linux-image-3.0.0-13-server 3.0.0-13.22~lucid1 linux-image-3.0.0-13-virtual 3.0.0-13.22~lucid1 After a standard system update you need to reboot your computer to make all the necessary changes. References: http://www.ubuntu.com/usn/usn-1294-1 CVE-2011-1162, CVE-2011-2494, CVE-2011-2942, CVE-2011-3209, CVE-2011-3638, CVE-2011-4081, CVE-2011-4087, CVE-2011-4326 Package Information: https://launchpad.net/ubuntu/+source/linux-lts-backport-oneiric/3.0.0-13.22~lucid1 -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 900 bytes Desc: OpenPGP digital signature URL: <https://lists.ubuntu.com/archives/ubuntu-security-announce/attachments/20111208/77df6bba/attachment.sig>