Ubuntu Security Notice 3470-2 - USN-3470-1 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. Qian Zhang discovered a heap-based buffer overflow in the tipc_msg_build function in the Linux kernel. A local attacker could use to cause a denial of service or possibly execute arbitrary code with administrative privileges. Various other issues were also addressed.
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Ubuntu Security Notice 3468-2 - USN-3468-1 fixed vulnerabilities in the Linux kernel for Ubuntu 17.04. This update provides the corresponding updates for the Linux Hardware Enablement kernel from Ubuntu 17.04 for Ubuntu 16.04 LTS. It was discovered that the KVM subsystem in the Linux kernel did not properly bound guest IRQs. A local attacker in a guest VM could use this to cause a denial of service. It was discovered that the Flash-Friendly File System implementation in the Linux kernel did not properly validate superblock metadata. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. Various other issues were also addressed.
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Ubuntu Security Notice 3468-1 - It was discovered that the KVM subsystem in the Linux kernel did not properly bound guest IRQs. A local attacker in a guest VM could use this to cause a denial of service. It was discovered that the Flash-Friendly File System implementation in the Linux kernel did not properly validate superblock metadata. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. Various other issues were also addressed.
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Ubuntu Security Notice 3470-1 - Qian Zhang discovered a heap-based buffer overflow in the tipc_msg_build function in the Linux kernel. A local attacker could use to cause a denial of service or possibly execute arbitrary code with administrative privileges. Dmitry Vyukov discovered that a race condition existed in the timerfd subsystem of the Linux kernel when handling might_cancel queuing. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. Various other issues were also addressed.
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Ubuntu Security Notice 3468-3 - It was discovered that the KVM subsystem in the Linux kernel did not properly bound guest IRQs. A local attacker in a guest VM could use this to cause a denial of service. It was discovered that the Flash-Friendly File System implementation in the Linux kernel did not properly validate superblock metadata. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. Various other issues were also addressed.
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The Linux Kernel running on AMD64 systems will sometimes map the contents of PIE executable, the heap or ld.so to where the stack is mapped allowing attackers to more easily manipulate the stack. It was discovered that a buffer overflow existed in the Bluetooth stack of the Linux kernel when handling L2CAP configuration responses. A physically proximate attacker could use this to cause a denial of service (system crash). It was discovered that the Flash-Friendly File System (f2fs) implementation in the Linux kernel did not properly validate superblock metadata. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code.
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Ubuntu Security Notice 3420-1 - It was discovered that a buffer overflow existed in the Bluetooth stack of the Linux kernel when handling L2CAP configuration responses. A physically proximate attacker could use this to cause a denial of service. It was discovered that the Flash-Friendly File System implementation in the Linux kernel did not properly validate superblock metadata. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. Various other issues were also addressed.
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Ubuntu Security Notice 3420-2 - USN-3420-1 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 overflow existed in the Bluetooth stack of the Linux kernel when handling L2CAP configuration responses. A physically proximate attacker could use this to cause a denial of service. Various other issues were also addressed.
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