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USN-3697-2: Linux kernel (OEM) vulnerabilities

2 July 2018

Several security issues were fixed in the Linux kernel.

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Releases

Packages

  • linux-oem - Linux kernel for OEM processors

Details

It was discovered that a null pointer dereference vulnerability existed in
the DCCP protocol implementation in the Linux kernel. A local attacker
could use this to cause a denial of service (system crash). (CVE-2018-1130)

Jann Horn discovered that the 32 bit adjtimex() syscall implementation for
64 bit Linux kernels did not properly initialize memory returned to user
space in some situations. A local attacker could use this to expose
sensitive information (kernel memory). (CVE-2018-11508)

Wang Qize discovered that an information disclosure vulnerability existed
in the SMBus driver for ACPI Embedded Controllers in the Linux kernel. A
local attacker could use this to expose sensitive information (kernel
pointer addresses). (CVE-2018-5750)

It was discovered that the SCTP Protocol implementation in the Linux kernel
did not properly validate userspace provided payload lengths in some
situations. A local attacker could use this to cause a denial of service
(system crash). (CVE-2018-5803)

It was discovered that an integer overflow error existed in the futex
implementation in the Linux kernel. A local attacker could use this to
cause a denial of service (system crash). (CVE-2018-6927)

It was discovered that an information leak vulnerability existed in the
floppy driver in the Linux kernel. A local attacker could use this to
expose sensitive information (kernel memory). (CVE-2018-7755)

It was discovered that a memory leak existed in the SAS driver subsystem of
the Linux kernel. A local attacker could use this to cause a denial of
service (memory exhaustion). (CVE-2018-7757)

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

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

Ubuntu 16.04

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-3654-2: linux-aws, linux-image-4.4.0-127-lowlatency, linux-image-4.4.0-127-powerpc64-emb, linux-image-4.4.0-127-powerpc64-smp, linux-lts-xenial, linux-image-extra-4.4.0-127-generic, linux-image-4.4.0-127-powerpc-e500mc, linux-image-4.4.0-127-powerpc-smp, linux-image-4.4.0-127-generic, linux-image-4.4.0-1022-aws, linux-image-4.4.0-127-generic-lpae
  • USN-3698-2: linux-image-generic-lts-trusty, linux-image-3.13.0-153-generic, linux-image-3.13.0-153-generic-lpae, linux-image-generic-lpae-lts-trusty, linux-lts-trusty
  • USN-3654-1: linux-aws, linux-image-4.4.0-127-lowlatency, linux-kvm, linux, linux-image-4.4.0-127-powerpc64-emb, linux-image-4.4.0-127-powerpc64-smp, linux-image-4.4.0-1060-aws, linux-image-extra-4.4.0-127-generic, linux-image-4.4.0-127-powerpc-e500mc, linux-image-4.4.0-127-powerpc-smp, linux-image-4.4.0-1026-kvm, linux-image-4.4.0-127-generic, linux-image-4.4.0-127-generic-lpae
  • USN-3656-1: linux-image-4.4.0-1090-raspi2, linux-image-4.4.0-1093-snapdragon, linux-snapdragon, linux-raspi2
  • USN-3697-1: linux-image-generic, linux-raspi2, linux-image-generic-lpae, linux, linux-image-4.13.0-46-generic-lpae, linux-image-4.13.0-46-generic, linux-image-raspi2, linux-image-4.13.0-1023-raspi2, linux-image-4.13.0-46-lowlatency, linux-image-lowlatency
  • USN-3698-1: linux-image-3.13.0-153-powerpc64-smp, linux-image-3.13.0-153-generic, linux, linux-image-3.13.0-153-powerpc-e500mc, linux-image-3.13.0-153-powerpc-e500, linux-image-extra-3.13.0-153-generic, linux-image-3.13.0-153-lowlatency, linux-image-3.13.0-153-generic-lpae, linux-image-3.13.0-153-powerpc64-emb, linux-image-3.13.0-153-powerpc-smp
  • USN-3695-2: linux-image-unsigned-4.15.0-1014-azure, linux-image-unsigned-4.15.0-24-generic, linux-image-unsigned-4.15.0-24-lowlatency, linux-image-4.15.0-24-lowlatency, linux-image-4.15.0-24-generic-lpae, linux-hwe, linux-image-4.15.0-24-generic, linux-azure
  • USN-3695-1: linux, linux-image-unsigned-4.15.0-24-generic, linux-image-unsigned-4.15.0-24-lowlatency, linux-image-4.15.0-24-lowlatency, linux-image-4.15.0-1011-aws, linux-image-4.15.0-24-snapdragon, linux-gcp, linux-azure, linux-image-4.15.0-1012-kvm, linux-kvm, linux-image-4.15.0-1013-raspi2, linux-image-4.15.0-24-generic, linux-oem, linux-raspi2, linux-image-4.15.0-1010-gcp, linux-image-unsigned-4.15.0-1009-oem, linux-image-unsigned-4.15.0-1014-azure, linux-aws, linux-image-4.15.0-24-generic-lpae
  • USN-3631-2: linux-aws, linux-image-4.4.0-121-generic-lpae, linux-image-4.4.0-121-generic, linux-image-extra-4.4.0-121-generic, linux-image-4.4.0-121-powerpc-e500mc, linux-lts-xenial, linux-image-4.4.0-121-powerpc-smp, linux-image-4.4.0-1017-aws, linux-image-4.4.0-121-lowlatency, linux-image-4.4.0-121-powerpc64-smp, linux-image-4.4.0-121-powerpc64-emb
  • USN-3631-1: linux-aws, linux-kvm, linux-image-4.4.0-121-generic-lpae, linux, linux-image-4.4.0-121-generic, linux-raspi2, linux-image-extra-4.4.0-121-generic, linux-image-4.4.0-121-powerpc-e500mc, linux-snapdragon, linux-image-4.4.0-121-powerpc-smp, linux-image-4.4.0-1021-kvm, linux-image-4.4.0-1087-raspi2, linux-image-4.4.0-1055-aws, linux-image-4.4.0-1090-snapdragon, linux-image-4.4.0-121-lowlatency, linux-image-4.4.0-121-powerpc64-smp, linux-image-4.4.0-121-powerpc64-emb
  • USN-3619-2: linux-aws, linux-lts-xenial, linux-image-extra-4.4.0-119-generic, linux-image-4.4.0-119-powerpc-smp, linux-image-4.4.0-119-powerpc64-emb, linux-image-4.4.0-1016-aws, linux-image-4.4.0-119-generic-lpae, linux-image-4.4.0-119-powerpc-e500mc, linux-image-4.4.0-119-powerpc64-smp, linux-image-4.4.0-119-lowlatency, linux-image-4.4.0-119-generic
  • USN-3619-1: linux-aws, linux-image-4.4.0-119-powerpc-e500mc, linux-kvm, linux, linux-raspi2, linux-image-4.4.0-1086-raspi2, linux-image-4.4.0-1088-snapdragon, linux-snapdragon, linux-image-extra-4.4.0-119-generic, linux-image-4.4.0-119-powerpc-smp, linux-image-4.4.0-119-powerpc64-emb, linux-image-4.4.0-119-generic-lpae, linux-image-4.4.0-1020-kvm, linux-image-4.4.0-119-powerpc64-smp, linux-image-4.4.0-119-lowlatency, linux-image-4.4.0-119-generic, linux-image-4.4.0-1054-aws
  • USN-3696-2: linux-aws, linux-image-4.4.0-1024-aws, linux-image-4.4.0-130-generic-lpae, linux-image-4.4.0-130-powerpc64-emb, linux-lts-xenial, linux-image-extra-4.4.0-130-generic, linux-image-4.4.0-130-generic, linux-image-4.4.0-130-powerpc64-smp, linux-image-4.4.0-130-powerpc-e500mc, linux-image-4.4.0-130-powerpc-smp, linux-image-4.4.0-130-lowlatency
  • USN-3696-1: linux-aws, linux-image-4.4.0-1029-kvm, linux-kvm, linux-raspi2, linux, linux-image-4.4.0-130-generic-lpae, linux-image-4.4.0-1095-snapdragon, linux-image-4.4.0-130-powerpc64-emb, linux-snapdragon, linux-image-4.4.0-1092-raspi2, linux-image-extra-4.4.0-130-generic, linux-image-4.4.0-130-generic, linux-image-4.4.0-130-powerpc64-smp, linux-image-4.4.0-1062-aws, linux-image-4.4.0-130-powerpc-e500mc, linux-image-4.4.0-130-powerpc-smp, linux-image-4.4.0-130-lowlatency