Ubuntu Security Notice 1253-1 - Ryan Sweat discovered that the kernel incorrectly handled certain VLAN packets. On some systems, a remote attacker could send specially crafted traffic to crash the system, leading to a denial of service. Vasiliy Kulikov and Dan Rosenberg discovered that ecryptfs did not correctly check the origin of mount points. A local attacker could exploit this to trick the system into unmounting arbitrary mount points, leading to a denial of service. Various other issues were also addressed.
500dc3b4a945636f97bf2e47879fe76c35bb56044546ce1c830a4bcfd79e5365Ubuntu Security Notice 1246-1 - Dan Rosenberg discovered that the IPv4 diagnostic routines did not correctly validate certain requests. A local attacker could exploit this to consume CPU resources, leading to a denial of service. Dan Rosenberg discovered that the Bluetooth stack incorrectly handled certain L2CAP requests. If a system was using Bluetooth, a remote attacker could send specially crafted traffic to crash the system or gain root privileges. Various other issues were also addressed.
cf11a06c88404689f3315bfbc23864bb0580bd1f90eb5d3cfcb5f38c2c2438a0Ubuntu Security Notice 1245-1 - Ryan Sweat discovered that the kernel incorrectly handled certain VLAN packets. On some systems, a remote attacker could send specially crafted traffic to crash the system, leading to a denial of service. Vasiliy Kulikov and Dan Rosenberg discovered that ecryptfs did not correctly check the origin of mount points. A local attacker could exploit this to trick the system into unmounting arbitrary mount points, leading to a denial of service. Various other issues were also addressed.
6c2fdc6fb88de2201319a3a2c820b9ee501477683f43a26fc633346bfd7e0794Ubuntu Security Notice 1244-1 - Dan Rosenberg discovered that the Linux kernel X.25 implementation incorrectly parsed facilities. A remote attacker could exploit this to crash the kernel, leading to a denial of service. Andrea Righi discovered a race condition in the KSM memory merging support. If KSM was being used, a local attacker could exploit this to crash the system, leading to a denial of service. Vasily Averin discovered that the NFS Lock Manager (NLM) incorrectly handled unlock requests. A local attacker could exploit this to cause a denial of service. Various other issues were also addressed.
e4754fa6724234d333d49b5c5ae6f7479b66f52067e7648702db16544a280bcdUbuntu Security Notice 1243-1 - It was discovered that the security fix for CVE-2010-4250 introduced a regression. A remote attacker could exploit this to crash the system, leading to a denial of service. 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. Vasiliy Kulikov discovered that /proc/PID/io did not enforce access restrictions. A local attacker could exploit this to read certain information, leading to a loss of privacy. Various other issues were also addressed.
17f248b3931a988aad14812534c1789db9fb19d3669e1520b000fb81fd5b0df9Ubuntu Security Notice 1242-1 - It was discovered that the security fix for CVE-2010-4250 introduced a regression. A remote attacker could exploit this to crash the system, leading to a denial of service. 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. Vasiliy Kulikov discovered that /proc/PID/io did not enforce access restrictions. A local attacker could exploit this to read certain information, leading to a loss of privacy. Various other issues were also addressed.
544731c1bb12667fa7a9b5b5b16ac0871a169440d284556042daf2acc1e9a8f4Ubuntu Security Notice 1241-1 - It was discovered that the Stream Control Transmission Protocol (SCTP) implementation incorrectly calculated lengths. If the net.sctp.addip_enable variable was turned on, a remote attacker could send specially crafted traffic to crash the system. Ryan Sweat discovered that the kernel incorrectly handled certain VLAN packets. On some systems, a remote attacker could send specially crafted traffic to crash the system, leading to a denial of service. Various other issues were also addressed.
34637add57bb1c47bb725041cb1273223d64aa46133511754d889d306943b525Ubuntu Security Notice 1240-1 - Ryan Sweat discovered that the kernel incorrectly handled certain VLAN packets. On some systems, a remote attacker could send specially crafted traffic to crash the system, leading to a denial of service. Vasiliy Kulikov and Dan Rosenberg discovered that ecryptfs did not correctly check the origin of mount points. A local attacker could exploit this to trick the system into unmounting arbitrary mount points, leading to a denial of service. Various other issues were also addressed.
7bb5696fdf28788ddf1a181d26c0746a318f35d21e90975dc7a17a6248fbbf34Ubuntu Security Notice 1239-1 - Ryan Sweat discovered that the kernel incorrectly handled certain VLAN packets. On some systems, a remote attacker could send specially crafted traffic to crash the system, leading to a denial of service. Vasiliy Kulikov and Dan Rosenberg discovered that ecryptfs did not correctly check the origin of mount points. A local attacker could exploit this to trick the system into unmounting arbitrary mount points, leading to a denial of service. Various other issues were also addressed.
a8d44e1d2d7d40338fc3f73c81b91d2690ae35010e30a9837bab689992f33bd1Red Hat Security Advisory 2011-1386-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. The maximum file offset handling for ext4 file systems could allow a local, unprivileged user to cause a denial of service. IPv6 fragment identification value generation could allow a remote attacker to disrupt a target system's networking, preventing legitimate users from accessing its services. Various other issues in the kernel have also been addressed.
a292c5086756cbebf4c05054f127313991d1329a2c63d6296b2aa08d6948fc72Ubuntu Security Notice 1228-1 - Timo Warns discovered that the EFI GUID partition table was not correctly parsed. A physically local attacker that could insert mountable devices could exploit this to crash the system or possibly gain root privileges. Dan Rosenberg discovered that the IPv4 diagnostic routines did not correctly validate certain requests. A local attacker could exploit this to consume CPU resources, leading to a denial of service. Various other issues were also addressed.
7a796facfbdbd4810efed8d348e53d29c7acf6784437937e622860655741e4f6Red Hat Security Advisory 2011-1189-01 - Updated kernel packages that fix several security issues, various bugs, and add two enhancements are now available for Red Hat Enterprise Linux 6. Using PCI passthrough without interrupt remapping support allowed KVM guests to generate MSI interrupts and thus potentially inject traps. A privileged guest user could use this flaw to crash the host or possibly escalate their privileges on the host. The fix for this issue can prevent PCI passthrough working and guests starting. Flaw in the client-side NLM implementation could allow a local, unprivileged user to cause a denial of service.
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