USN-2778-1

Description

linux-lts-vivid vulnerabilities It was discovered that the Linux kernel did not check if a new IPv6 MTU set by a user space application was valid. A remote attacker could forge a route advertisement with an invalid MTU that a user space daemon like NetworkManager would honor and apply to the kernel, causing a denial of service. (CVE-2015-0272) It was discovered that virtio networking in the Linux kernel did not handle fragments correctly, leading to kernel memory corruption. A remote attacker could use this to cause a denial of service (system crash) or possibly execute code with administrative privileges. (CVE-2015-5156) It was discovered that the Reliable Datagram Sockets (RDS) implementation in the Linux kernel did not verify sockets were properly bound before attempting to send a message, which could cause a NULL pointer dereference. An attacker could use this to cause a denial of service (system crash). (CVE-2015-6937) Ben Hutchings discovered that the Advanced Union Filesystem (aufs) for the Linux kernel did not correctly handle references of memory mapped files from an aufs mount. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code with administrative privileges. (CVE-2015-7312)

Affected Systems

• ubuntu•linux-lts-vivid

  < 3.19.0-31.36~14.04.1

References (5)

• https://ubuntu.com/security/notices/USN-2778-1
• https://ubuntu.com/security/CVE-2015-0272
• https://ubuntu.com/security/CVE-2015-5156
• https://ubuntu.com/security/CVE-2015-6937
• https://ubuntu.com/security/CVE-2015-7312