USN-3597-1: Linux kernel vulnerabilities

15 March 2018

Several security issues were fixed in the Linux kernel.

Releases

Packages

  • linux - Linux kernel
  • linux-raspi2 - Linux kernel for Raspberry Pi 2

Details

USNS 3541-1 and 3523-1 provided mitigations for Spectre and Meltdown
(CVE-2017-5715, CVE-2017-5753, CVE-2017-5754) for the i386, amd64,
and ppc64el architectures in Ubuntu 17.10. This update provides
the corresponding mitigations for the arm64 architecture. Original
advisory details:

Jann Horn discovered that microprocessors utilizing speculative execution
and indirect branch prediction may allow unauthorized memory reads via
sidechannel attacks. This flaw is known as Meltdown. A local attacker could
use this to expose sensitive information, including kernel memory.
(CVE-2017-5754)

Jann Horn discovered that microprocessors utilizing speculative execution
and branch prediction may allow unauthorized memory reads via sidechannel
attacks. This flaw is known as Spectre. A local attacker could use this to
expose sensitive information, including kernel memory. (CVE-2017-5715,
CVE-2017-5753)

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 17.10

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.

Related notices

  • USN-3516-1: firefox
  • USN-3531-3: intel-microcode
  • USN-3690-1: amd64-microcode
  • USN-3540-2: linux-image-powerpc64-smp-lts-xenial, linux-image-4.4.0-111-lowlatency, linux-image-powerpc-smp-lts-xenial, linux-aws, linux-lts-xenial, linux-image-4.4.0-111-powerpc64-smp, linux-image-generic-lts-xenial, linux-image-lowlatency-lts-xenial, linux-image-4.4.0-1011-aws, linux-image-4.4.0-111-powerpc-e500mc, linux-image-4.4.0-111-powerpc-smp, linux-image-powerpc-e500mc-lts-xenial, linux-image-4.4.0-111-powerpc64-emb, linux-image-aws, linux-image-powerpc64-emb-lts-xenial, linux-image-4.4.0-111-generic
  • USN-3583-1: linux-image-3.13.0-142-powerpc-e500, linux-image-3.13.0-142-powerpc-e500mc, linux, linux-image-3.13.0-142-powerpc64-smp, linux-image-generic, linux-image-3.13.0-142-powerpc-smp, linux-image-3.13.0-142-powerpc64-emb, linux-image-lowlatency, linux-image-3.13.0-142-lowlatency, linux-image-powerpc-smp, linux-image-generic-lpae, linux-image-powerpc64-smp, linux-image-powerpc-e500, linux-image-powerpc64-emb, linux-image-3.13.0-142-generic-lpae, linux-image-3.13.0-142-generic, linux-image-powerpc-e500mc
  • USN-3597-2: linux-hwe, linux-image-generic-hwe-16.04, linux-image-4.13.0-37-generic, linux-image-4.13.0-37-lowlatency, linux-image-lowlatency-hwe-16.04, linux-image-generic-lpae-hwe-16.04, linux-image-4.13.0-37-generic-lpae
  • USN-3531-1: intel-microcode
  • USN-3524-2: linux-image-generic-lpae-lts-trusty, linux-image-generic-lts-trusty, linux-image-3.13.0-139-generic-lpae, linux-lts-trusty, linux-image-3.13.0-139-generic
  • USN-3777-3: linux-image-4.15.0-1025-azure, linux-image-azure, linux-azure
  • USN-3540-1: linux-image-4.4.0-112-powerpc64-smp, linux-image-powerpc64-emb, linux-image-4.4.0-112-generic-lpae, linux-image-euclid, linux, linux-image-4.4.0-112-lowlatency, linux-aws, linux-image-powerpc64-smp, linux-image-4.4.0-112-powerpc-e500mc, linux-image-generic-lpae, linux-image-aws, linux-image-powerpc-smp, linux-image-generic, linux-image-powerpc-e500mc, linux-image-lowlatency, linux-image-4.4.0-112-powerpc64-emb, linux-euclid, linux-image-4.4.0-112-generic, linux-image-4.4.0-9023-euclid, linux-image-4.4.0-112-powerpc-smp, linux-image-4.4.0-1049-aws
  • USN-3594-1: linux-image-3.13.0-143-lowlatency, linux, linux-image-generic, linux-image-3.13.0-143-generic-lpae, linux-image-lowlatency, linux-image-3.13.0-143-generic, linux-image-generic-lpae
  • USN-3581-1: linux, linux-image-generic, linux-image-4.13.0-36-lowlatency, linux-image-lowlatency, linux-image-4.13.0-36-generic, linux-image-4.13.0-36-generic-lpae, linux-image-generic-lpae
  • USN-3523-2: linux-image-gcp, linux-image-azure, linux-image-gke, linux-gcp, linux-image-oem, linux-image-4.13.0-26-lowlatency, linux-hwe, linux-azure, linux-image-generic-hwe-16.04, linux-image-lowlatency-hwe-16.04, linux-image-4.13.0-1015-oem, linux-image-4.13.0-26-generic, linux-image-generic-lpae-hwe-16.04, linux-image-4.13.0-1006-gcp, linux-image-4.13.0-26-generic-lpae, linux-oem, linux-image-4.13.0-1005-azure
  • USN-3581-2: linux-image-gcp, linux-image-azure, linux-image-4.13.0-1011-azure, linux-gcp, linux-image-gke, linux-image-oem, linux-image-4.13.0-36-lowlatency, linux-image-4.13.0-36-generic, linux-hwe, linux-image-4.13.0-1011-gcp, linux-azure, linux-image-generic-hwe-16.04, linux-image-lowlatency-hwe-16.04, linux-image-4.13.0-36-generic-lpae, linux-image-generic-lpae-hwe-16.04, linux-oem, linux-image-4.13.0-1021-oem
  • USN-3542-2: linux-lts-trusty, linux-image-3.13.0-140-generic, linux-image-generic-lts-trusty
  • USN-3523-1: linux-image-4.13.0-25-lowlatency, linux-image-lowlatency, linux-image-generic, linux, linux-image-4.13.0-25-generic
  • USN-3582-2: linux-image-powerpc64-smp-lts-xenial, linux-image-4.4.0-116-lowlatency, linux-image-4.4.0-116-powerpc64-smp, linux-image-4.4.0-116-generic, linux-image-4.4.0-116-generic-lpae, linux-image-4.4.0-116-powerpc-smp, linux-image-4.4.0-116-powerpc64-emb, linux-aws, linux-image-generic-lpae-lts-xenial, linux-lts-xenial, linux-image-4.4.0-116-powerpc-e500mc, linux-image-generic-lts-xenial, linux-image-lowlatency-lts-xenial, linux-image-powerpc64-emb-lts-xenial, linux-image-powerpc-smp-lts-xenial, linux-image-aws, linux-image-4.4.0-1014-aws, linux-image-powerpc-e500mc-lts-xenial
  • USN-3560-1: qemu-system-s390x, qemu, qemu-system, qemu-system-x86
  • USN-3541-1: linux-image-lowlatency, linux, linux-image-generic, linux-image-4.13.0-31-generic, linux-image-4.13.0-31-lowlatency
  • USN-3521-1: nvidia-graphics-drivers-384, nvidia-384
  • USN-3542-1: linux-image-lowlatency, linux-image-generic, linux, linux-image-3.13.0-141-lowlatency, linux-image-3.13.0-141-generic
  • USN-3580-1: linux-image-3.2.0-133-generic, linux, linux-image-generic, linux-image-3.2.0-133-generic-pae, linux-image-generic-pae
  • USN-3522-2: linux-image-4.4.0-108-lowlatency, linux-aws, linux-lts-xenial, linux-image-4.4.0-1009-aws, linux-image-4.4.0-108-generic, linux-image-generic-lts-xenial, linux-image-lowlatency-lts-xenial, linux-image-aws
  • USN-3525-1: linux-image-3.2.0-132-generic-pae, linux, linux-image-generic, linux-image-3.2.0-132-generic, linux-image-generic-pae
  • USN-3524-1: linux-image-lowlatency, linux-image-generic, linux, linux-image-3.13.0-139-lowlatency, linux-image-3.13.0-139-generic
  • USN-3541-2: linux-image-gcp, linux-image-azure, linux-image-4.13.0-1007-gcp, linux-gcp, linux-image-gke, linux-image-4.13.0-1006-azure, linux-image-oem, linux-hwe, linux-azure, linux-image-generic-hwe-16.04, linux-image-4.13.0-31-generic, linux-image-lowlatency-hwe-16.04, linux-oem, linux-image-4.13.0-1017-oem, linux-image-4.13.0-31-lowlatency
  • USN-3561-1: libvirt-bin, libvirt, libvirt0
  • USN-3549-1: linux-image-kvm, linux-kvm, linux-image-4.4.0-1017-kvm
  • USN-3522-1: linux-image-4.4.0-1047-aws, linux-image-aws, linux, linux-image-generic, linux-image-lowlatency, linux-euclid, linux-image-4.4.0-108-lowlatency, linux-kvm, linux-aws, linux-image-4.4.0-108-generic, linux-image-4.4.0-1015-kvm, linux-image-kvm, linux-image-euclid, linux-image-4.4.0-9021-euclid
  • USN-3582-1: linux-image-4.4.0-116-lowlatency, linux-image-4.4.0-116-generic, linux-kvm, linux-image-4.4.0-116-powerpc-e500mc, linux-image-powerpc64-emb, linux-image-4.4.0-1087-snapdragon, linux, linux-image-4.4.0-1052-aws, linux-image-4.4.0-116-powerpc-smp, linux-image-4.4.0-116-powerpc64-emb, linux-aws, linux-image-powerpc64-smp, linux-image-generic-lpae, linux-image-aws, linux-image-raspi2, linux-image-powerpc-smp, linux-image-generic, linux-image-4.4.0-116-generic-lpae, linux-raspi2, linux-image-kvm, linux-image-4.4.0-1085-raspi2, linux-image-snapdragon, linux-image-4.4.0-1019-kvm, linux-image-4.4.0-116-powerpc64-smp, linux-image-lowlatency, linux-snapdragon, linux-image-powerpc-e500mc
  • USN-3530-1: libjavascriptcoregtk-4.0-18, libwebkit2gtk-4.0-37, webkit2gtk
  • USN-3620-2: linux-image-generic-lpae-lts-trusty, linux-image-3.13.0-144-generic, linux-image-generic-lts-trusty, linux-image-3.13.0-144-generic-lpae, linux-lts-trusty