Several security issues were fixed in the kernel. Andrey Konovalov discovered that the AF_PACKET implementation in the Linux kernel did not properly validate certain block-size data. A local attacker could use this to cause a denial of service (system crash). Andrey Konovalov discovered a use-after-free vulnerability in the DCCP implementation in the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly gain administrative privileges. Various other issues were also addressed.
42b1d7e92d487c05901f19f08b2e6c9e119556985c2054e46a019c3a3bd7bf0dUbuntu Security Notice 3160-2 - USN-3160-1 fixed vulnerabilities in the Linux kernel for Ubuntu 14.04 LTS. This update provides the corresponding updates for the Linux Hardware Enablement kernel from Ubuntu 14.04 LTS for Ubuntu 12.04 LTS. CAI Qian discovered that shared bind mounts in a mount namespace exponentially added entries without restriction to the Linux kernel's mount table. A local attacker could use this to cause a denial of service. Various other issues were also addressed.
b95631754810748c106c3ef00f5e3777bc622f25a08336ae92870a1f6c78bc74Ubuntu Security Notice 3160-1 - CAI Qian discovered that shared bind mounts in a mount namespace exponentially added entries without restriction to the Linux kernel's mount table. A local attacker could use this to cause a denial of service. It was discovered that a race condition existed in the procfs environ_read function in the Linux kernel, leading to an integer underflow. A local attacker could use this to expose sensitive information. Various other issues were also addressed.
afcba7dde2f290972a730c8d0f9a1db7b7964ff29acc7b708042bf6e77ebe13aUbuntu Security Notice 3159-2 - It was discovered that a race condition existed in the procfs environ_read function in the Linux kernel, leading to an integer underflow. A local attacker could use this to expose sensitive information.
5436508e406737fd9a6eaa4c58fbe93bc26c77df2d1489e182159789b77b6653Ubuntu Security Notice 3159-1 - It was discovered that a race condition existed in the procfs environ_read function in the Linux kernel, leading to an integer underflow. A local attacker could use this to expose sensitive information.
2ade25b40e4ec8d4ce4b7451d983b4c53f72b9fd08bfee5d0bc5e62d74c79d04
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