A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 14.04 LTS
Several security issues were fixed in the Linux kernel.
- linux - Linux kernel
It was discovered that a NULL pointer dereference existed in the keyring subsystem of the Linux kernel. A local attacker could use this to cause a denial of service (system crash). (CVE-2017-2647)
It was discovered that a race condition existed in the raw MIDI driver for the Linux kernel, leading to a double free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-10902)
It was discovered that an integer overrun vulnerability existed in the POSIX timers implementation in the Linux kernel. A local attacker could use this to cause a denial of service. (CVE-2018-12896)
Noam Rathaus discovered that a use-after-free vulnerability existed in the Infiniband implementation in the Linux kernel. An attacker could use this to cause a denial of service (system crash). (CVE-2018-14734)
It was discovered that the YUREX USB device driver for the Linux kernel did not properly restrict user space reads or writes. A physically proximate attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-16276)
Tetsuo Handa discovered a logic error in the TTY subsystem of the Linux kernel. A local attacker with access to pseudo terminal devices could use this to cause a denial of service. (CVE-2018-18386)
Kanda Motohiro discovered that writing extended attributes to an XFS file system in the Linux kernel in certain situations could cause an error condition to occur. A local attacker could use this to cause a denial of service. (CVE-2018-18690)
It was discovered that an integer overflow vulnerability existed in the CDROM driver of the Linux kernel. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2018-18710)
The problem can be corrected by updating your system to the following package versions:
- Ubuntu 14.04 LTS
- linux-image-3.13.0-164-generic - 3.13.0-164.214
- linux-image-3.13.0-164-generic-lpae - 3.13.0-164.214
- linux-image-3.13.0-164-lowlatency - 3.13.0-164.214
- linux-image-3.13.0-164-powerpc-e500 - 3.13.0-164.214
- linux-image-3.13.0-164-powerpc-e500mc - 3.13.0-164.214
- linux-image-3.13.0-164-powerpc-smp - 3.13.0-164.214
- linux-image-3.13.0-164-powerpc64-emb - 3.13.0-164.214
- linux-image-3.13.0-164-powerpc64-smp - 3.13.0-164.214
- linux-image-generic - 220.127.116.11.174
- linux-image-generic-lpae - 18.104.22.168.174
- linux-image-lowlatency - 22.214.171.124.174
- linux-image-powerpc-e500 - 126.96.36.199.174
- linux-image-powerpc-e500mc - 188.8.131.52.174
- linux-image-powerpc-smp - 184.108.40.206.174
- linux-image-powerpc64-emb - 220.127.116.11.174
- linux-image-powerpc64-smp - 18.104.22.168.174
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
After a standard system update you need to reboot your computer to make all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have been given a new version number, which requires you to recompile and reinstall all third party kernel modules you might have installed. Unless you manually uninstalled the standard kernel metapackages (e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual, linux-powerpc), a standard system upgrade will automatically perform this as well.