USN-3470-1

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USN-3470-1

Summary: linux vulnerabilities

Details: 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 (system crash) or possibly execute arbitrary code with administrative privileges. (CVE-2016-8632) 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 (system crash) or possibly execute arbitrary code. (CVE-2017-10661) 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. (CVE-2017-10662, CVE-2017-10663) Anthony Perard discovered that the Xen virtual block driver did not properly initialize some data structures before passing them to user space. A local attacker in a guest VM could use this to expose sensitive information from the host OS or other guest VMs. (CVE-2017-10911) 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 (system crash) or possibly execute arbitrary code. (CVE-2017-11176) Dave Chinner discovered that the XFS filesystem did not enforce that the realtime inode flag was settable only on filesystems on a realtime device. A local attacker could use this to cause a denial of service (system crash). (CVE-2017-14340)

References: https://ubuntu.com/security/notices/USN-3470-1, https://ubuntu.com/security/CVE-2016-8632, https://ubuntu.com/security/CVE-2017-10661, https://ubuntu.com/security/CVE-2017-10662, https://ubuntu.com/security/CVE-2017-10663, https://ubuntu.com/security/CVE-2017-10911, https://ubuntu.com/security/CVE-2017-11176, https://ubuntu.com/security/CVE-2017-14340