Ubuntu Security Notice 3754-1 - Ralf Spenneberg discovered that the ext4 implementation in the Linux kernel did not properly validate meta block groups. An attacker with physical access could use this to specially craft an ext4 image that causes a denial of service. It was discovered that an information disclosure vulnerability existed in the ACPI implementation of the Linux kernel. A local attacker could use this to expose sensitive information. Various other issues were also addressed.
8fd248fb77a13c2c1319323d9c90a547Ubuntu Security Notice 3631-2 - USN-3631-1 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 buffer overread vulnerability existed in the keyring subsystem of the Linux kernel. A local attacker could possibly use this to expose sensitive information. Various other issues were also addressed.
c4dd401b60a639a9f0744656fd3a38e6Ubuntu Security Notice 3631-1 - It was discovered that a buffer overread vulnerability existed in the keyring subsystem of the Linux kernel. A local attacker could possibly use this to expose sensitive information. It was discovered that the DM04/QQBOX USB driver in the Linux kernel did not properly handle device attachment and warm-start. A physically proximate attacker could use this to cause a denial of service or possibly execute arbitrary code. Various other issues were also addressed.
6a4a387029da1343c93b40b5b9648c5bDebian Linux Security Advisory 4082-1 - Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leaks.
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