USN-3657-1: Linux kernel (Raspberry Pi 2) vulnerabilities

22 May 2018

Several security issues were fixed in the Linux kernel.

Releases

Packages

  • linux-raspi2 - Linux kernel for Raspberry Pi 2

Details

It was discovered that the netlink subsystem in the Linux kernel did not
properly restrict observations of netlink messages to the appropriate net
namespace. A local attacker could use this to expose sensitive information
(kernel netlink traffic). (CVE-2017-17449)

Tuba Yavuz discovered that a double-free error existed in the USBTV007
driver of the Linux kernel. A local attacker could use this to cause a
denial of service (system crash) or possibly execute arbitrary code.
(CVE-2017-17975)

It was discovered that a race condition existed in the Device Mapper
component of the Linux kernel. A local attacker could use this to cause a
denial of service (system crash). (CVE-2017-18203)

It was discovered that an infinite loop could occur in the madvise(2)
implementation in the Linux kernel in certain circumstances. A local
attacker could use this to cause a denial of service (system hang).
(CVE-2017-18208)

Silvio Cesare discovered a buffer overwrite existed in the NCPFS
implementation in the Linux kernel. A remote attacker controlling a
malicious NCPFS server could use this to cause a denial of service (system
crash) or possibly execute arbitrary code. (CVE-2018-8822)

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-3653-2: linux-gcp, linux-image-4.13.0-43-generic-lpae, linux-image-generic-lpae-hwe-16.04, linux-image-oem, linux-image-4.13.0-43-lowlatency, linux-image-4.13.0-1017-gcp, linux-image-4.13.0-43-generic, linux-image-lowlatency-hwe-16.04, linux-image-4.13.0-1018-azure, linux-image-gke, linux-oem, linux-hwe, linux-azure, linux-image-4.13.0-1028-oem, linux-image-gcp, linux-image-azure, linux-image-generic-hwe-16.04
  • USN-3619-2: linux-image-generic-lpae-lts-xenial, linux-image-powerpc64-emb-lts-xenial, linux-image-4.4.0-119-powerpc64-smp, linux-image-4.4.0-1016-aws, linux-image-aws, linux-image-lowlatency-lts-xenial, linux-image-4.4.0-119-powerpc-smp, linux-image-4.4.0-119-generic, linux-image-4.4.0-119-powerpc64-emb, linux-image-generic-lts-xenial, linux-lts-xenial, linux-image-powerpc64-smp-lts-xenial, linux-image-4.4.0-119-generic-lpae, linux-image-4.4.0-119-powerpc-e500mc, linux-image-powerpc-e500mc-lts-xenial, linux-image-powerpc-smp-lts-xenial, linux-aws, linux-image-4.4.0-119-lowlatency
  • USN-3656-1: linux-image-4.4.0-1093-snapdragon, linux-image-4.4.0-1090-raspi2, linux-image-raspi2, linux-snapdragon, linux-image-snapdragon, linux-raspi2
  • USN-3655-2: linux-image-3.13.0-149-generic-lpae, linux-image-generic-lts-trusty, linux-image-3.13.0-149-generic, linux-lts-trusty, linux-image-generic-lpae-lts-trusty
  • USN-3654-1: linux, linux-image-4.4.0-127-lowlatency, linux-image-lowlatency, linux-image-generic, linux-image-4.4.0-127-powerpc-smp, linux-image-powerpc-smp, linux-image-powerpc64-smp, linux-image-kvm, linux-image-4.4.0-127-powerpc64-emb, linux-image-4.4.0-127-powerpc-e500mc, linux-image-4.4.0-127-powerpc64-smp, linux-image-4.4.0-1060-aws, linux-aws, linux-image-aws, linux-kvm, linux-image-4.4.0-127-generic, linux-image-4.4.0-127-generic-lpae, linux-image-powerpc-e500mc, linux-image-4.4.0-1026-kvm, linux-image-generic-lpae, linux-image-powerpc64-emb
  • USN-3653-1: linux-image-4.13.0-43-generic-lpae, linux-image-4.13.0-43-lowlatency, linux-image-4.13.0-43-generic, linux, linux-image-generic-lpae, linux-image-lowlatency, linux-image-generic
  • USN-3619-1: linux-image-4.4.0-1086-raspi2, linux-image-4.4.0-119-generic, linux, linux-image-snapdragon, linux-image-4.4.0-1020-kvm, linux-image-lowlatency, linux-image-generic, linux-image-powerpc-smp, linux-image-raspi2, linux-image-4.4.0-119-powerpc64-emb, linux-image-kvm, linux-image-4.4.0-1054-aws, linux-image-powerpc64-smp, linux-image-4.4.0-119-powerpc-e500mc, linux-aws, linux-image-4.4.0-1088-snapdragon, linux-image-4.4.0-119-powerpc64-smp, linux-image-aws, linux-kvm, linux-snapdragon, linux-image-4.4.0-119-generic-lpae, linux-image-powerpc-e500mc, linux-raspi2, linux-image-4.4.0-119-powerpc-smp, linux-image-generic-lpae, linux-image-powerpc64-emb, linux-image-4.4.0-119-lowlatency
  • USN-3654-2: linux-image-generic-lpae-lts-xenial, linux-image-powerpc64-emb-lts-xenial, linux-image-aws, linux-image-lowlatency-lts-xenial, linux-image-4.4.0-127-generic, linux-image-generic-lts-xenial, linux-image-4.4.0-127-powerpc64-emb, linux-image-4.4.0-127-lowlatency, linux-image-powerpc64-smp-lts-xenial, linux-lts-xenial, linux-image-powerpc-e500mc-lts-xenial, linux-image-powerpc-smp-lts-xenial, linux-image-4.4.0-127-generic-lpae, linux-image-4.4.0-127-powerpc-e500mc, linux-image-4.4.0-127-powerpc64-smp, linux-image-4.4.0-1022-aws, linux-image-4.4.0-127-powerpc-smp, linux-aws
  • USN-3655-1: linux-image-powerpc-e500mc, linux-image-powerpc-e500, linux-image-3.13.0-149-powerpc64-smp, linux-image-3.13.0-149-lowlatency, linux-image-3.13.0-149-powerpc-smp, linux-image-3.13.0-149-generic-lpae, linux-image-3.13.0-149-powerpc64-emb, linux, linux-image-3.13.0-149-powerpc-e500mc, linux-image-powerpc64-smp, linux-image-generic-lpae, linux-image-lowlatency, linux-image-generic, linux-image-3.13.0-149-powerpc-e500, linux-image-3.13.0-149-generic, linux-image-powerpc64-emb, linux-image-powerpc-smp