It was discovered that the Linux kernel did not honor the UEFI secure boot mode when performing a kexec operation. A local attacker could use this to bypass secure boot restrictions. Huang Weller discovered that the ext4 filesystem implementation in the Linux kernel mishandled a needs-flushing-before-commit list. A local attacker could use this to expose sensitive information.
c7df1f4aa0c771c693ab5cdc029c2592e8150b9b8545e98b1a33e436c816e1b2Ubuntu Security Notice 3406-2 - USN-3406-1 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 ESM. It was discovered that an out of bounds read vulnerability existed in the associative array implementation in the Linux kernel. A local attacker could use this to cause a denial of service or expose sensitive information. Various other issues were also addressed.
758596ce904dfa2889ac9b02c30f0768fa707b455b39326bcb94ddd33a26005dUbuntu Security Notice 3406-1 - It was discovered that an out of bounds read vulnerability existed in the associative array implementation in the Linux kernel. A local attacker could use this to cause a denial of service or expose sensitive information. It was discovered that a NULL pointer dereference existed in the Direct Rendering Manager driver for VMWare devices in the Linux kernel. A local attacker could use this to cause a denial of service. Various other issues were also addressed.
713a8ec2966db4dfb7a60eb6aba6c8abc38cb940925a7a8602735cf1998e3b56Ubuntu Security Notice 3405-2 - USN-3405-1 fixed vulnerabilities in the Linux kernel for Ubuntu 16.04 LTS. This update provides the corresponding updates for the Linux Hardware Enablement kernel from Ubuntu 16.04 LTS for Ubuntu 14.04 LTS. It was discovered that a use-after-free vulnerability existed in the POSIX message queue implementation in the Linux kernel. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. Various other issues were also addressed.
9fb7e5e4b1090eb89ab9343b4aac56e8f9b44171aade9cf1e7eb6e419ed30450Ubuntu Security Notice 3405-1 - It was discovered that a use-after-free vulnerability existed in the POSIX message queue implementation in the Linux kernel. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. Huang Weller discovered that the ext4 filesystem implementation in the Linux kernel mishandled a needs-flushing-before-commit list. A local attacker could use this to expose sensitive information. Various other issues were also addressed.
e985c878ac1f840112d8ae173a55521c302cdeedb1d58e78149cb339271b8e3a
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