Ubuntu Security Notice 1271-1 - It was discovered that CIFS incorrectly handled authentication. When a user had a CIFS share mounted that required authentication, a local user could mount the same share without knowing the correct password. It was discovered that the GRE protocol incorrectly handled netns initialization. A remote attacker could send a packet while the ip_gre module was loading, and crash the system, leading to a denial of service. Various other issues were also addressed.
780e7898e3ae112f38373badd4790c4b6d45b0de5dde9d12f1bfd6ee1d6bbe8a
Ubuntu Security Notice 1256-1 - It was discovered that the /proc filesystem did not correctly handle permission changes when programs executed. A local attacker could hold open files to examine details about programs running with higher privileges, potentially increasing the chances of exploiting additional vulnerabilities. Vasiliy Kulikov discovered that the Bluetooth stack did not correctly clear memory. A local attacker could exploit this to read kernel stack memory, leading to a loss of privacy. Various other issues were also addressed.
065ea3de04cbda6ba2f070db62f0f0ff03f73b678f1a9b1d73799d5e8bba15ab
Red Hat Security Advisory 2011-1253-01 - Updated kernel-rt packages that fix multiple security issues and various bugs are now available for Red Hat Enterprise MRG 2.0. The Red Hat Security Response Team has rated this update as having important security impact.
5d74eae8a478f1639bcefe4abf0a381df1d68b77824da152d114e20cc673b84a
Red Hat Security Advisory 2011-0928-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. It was found that the receive hook in the ipip_init() function in the ipip module, and in the ipgre_init() function in the ip_gre module, could be called before network namespaces setup is complete. If packets were received at the time the ipip or ip_gre module was still being loaded into the kernel, it could cause a denial of service. Various other issues were also addressed.
350ab87a2c7cc6928487aae28c821b94821c2f71304774ac2ba7fd7754c97395