USN-3797-1: Linux kernel vulnerabilities

Releases

• Ubuntu 16.04 ESM

Packages

• linux - Linux kernel
• linux-aws - Linux kernel for Amazon Web Services (AWS) systems
• linux-kvm - Linux kernel for cloud environments
• linux-raspi2 - Linux kernel for Raspberry Pi 2
• linux-snapdragon - Linux kernel for Snapdragon processors

Details

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 an integer overflow existed in the CD-ROM driver of
the Linux kernel. A local attacker could use this to expose sensitive
information (kernel memory). (CVE-2018-16658)

It was discovered that an integer overflow existed in the HID Bluetooth
implementation in the Linux kernel that could lead to a buffer overwrite.
An attacker could use this to cause a denial of service (system crash) or
possibly execute arbitrary code. (CVE-2018-9363)

Yves Younan discovered that the CIPSO labeling implementation in the Linux
kernel did not properly handle IP header options in some situations. A
remote attacker could use this to specially craft network traffic that
could cause a denial of service (infinite loop). (CVE-2018-10938)

Update instructions

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

Ubuntu 16.04

• linux-image-4.4.0-1036-kvm - 4.4.0-1036.42
• linux-image-4.4.0-1070-aws - 4.4.0-1070.80
• linux-image-4.4.0-1099-raspi2 - 4.4.0-1099.107
• linux-image-4.4.0-1103-snapdragon - 4.4.0-1103.108
• linux-image-4.4.0-138-generic - 4.4.0-138.164
• linux-image-4.4.0-138-generic-lpae - 4.4.0-138.164
• linux-image-4.4.0-138-lowlatency - 4.4.0-138.164
• linux-image-4.4.0-138-powerpc-e500mc - 4.4.0-138.164
• linux-image-4.4.0-138-powerpc-smp - 4.4.0-138.164
• linux-image-4.4.0-138-powerpc64-emb - 4.4.0-138.164
• linux-image-4.4.0-138-powerpc64-smp - 4.4.0-138.164

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.

References

• CVE-2018-10938
• CVE-2018-14734
• CVE-2018-16658
• CVE-2018-9363

Related notices

• USN-3797-2: linux-aws, linux-image-4.4.0-138-powerpc-e500mc, linux-image-4.4.0-138-powerpc64-emb, linux-lts-xenial, linux-image-4.4.0-138-lowlatency, linux-image-4.4.0-138-powerpc64-smp, linux-image-4.4.0-1032-aws, linux-image-4.4.0-138-powerpc-smp, linux-image-4.4.0-138-generic, linux-image-4.4.0-138-generic-lpae, linux-image-extra-4.4.0-138-generic
• USN-3847-2: linux-aws-hwe, linux-image-unsigned-4.15.0-43-generic, linux-image-unsigned-4.15.0-1026-gcp, linux-azure, linux-image-4.15.0-43-generic-lpae, linux-image-unsigned-4.15.0-1036-azure, linux-image-4.15.0-43-lowlatency, linux-gcp, linux-image-unsigned-4.15.0-43-lowlatency, linux-image-4.15.0-43-generic, linux-image-4.15.0-1031-aws, linux-hwe
• USN-3847-3: linux-azure, linux-image-unsigned-4.15.0-1036-azure
• USN-3847-1: linux-aws, linux-azure, linux-kvm, linux-image-4.15.0-1028-kvm, linux-image-unsigned-4.15.0-43-generic, linux-raspi2, linux-gcp, linux-image-unsigned-4.15.0-1036-azure, linux-oem, linux-image-unsigned-4.15.0-1026-gcp, linux, linux-image-4.15.0-43-generic-lpae, linux-image-4.15.0-43-lowlatency, linux-image-unsigned-4.15.0-43-lowlatency, linux-image-4.15.0-43-generic, linux-image-4.15.0-1030-raspi2, linux-image-unsigned-4.15.0-1030-oem, linux-image-4.15.0-43-snapdragon, linux-image-4.15.0-1031-aws
• USN-3849-2: linux-image-generic-lts-trusty, linux-image-3.13.0-164-generic, linux-image-3.13.0-164-generic-lpae, linux-image-generic-lpae-lts-trusty, linux-lts-trusty
• USN-3849-1: linux-image-3.13.0-164-lowlatency, linux-image-extra-3.13.0-164-generic, linux-image-3.13.0-164-generic, linux, linux-image-3.13.0-164-powerpc-smp, linux-image-3.13.0-164-powerpc-e500mc, linux-image-3.13.0-164-generic-lpae, linux-image-3.13.0-164-powerpc64-smp, linux-image-3.13.0-164-powerpc-e500, linux-image-3.13.0-164-powerpc64-emb
• USN-3820-3: linux-azure, linux-image-unsigned-4.15.0-1031-azure
• USN-3820-2: linux-azure, linux-image-4.15.0-39-lowlatency, linux-image-unsigned-4.15.0-39-lowlatency, linux-image-unsigned-4.15.0-1031-azure, linux-gcp, linux-hwe, linux-image-unsigned-4.15.0-1024-gcp, linux-image-unsigned-4.15.0-39-generic, linux-image-4.15.0-39-generic, linux-image-4.15.0-39-generic-lpae
• USN-3820-1: linux-aws, linux-azure, linux-image-4.15.0-1028-raspi2, linux-kvm, linux-image-unsigned-4.15.0-39-lowlatency, linux-image-4.15.0-1027-aws, linux-image-4.15.0-39-snapdragon, linux-image-4.15.0-39-lowlatency, linux-raspi2, linux-image-unsigned-4.15.0-1031-azure, linux-gcp, linux-oem, linux, linux-image-4.15.0-1026-kvm, linux-image-4.15.0-39-generic, linux-image-4.15.0-39-generic-lpae, linux-image-unsigned-4.15.0-1026-oem, linux-image-unsigned-4.15.0-1024-gcp, linux-image-unsigned-4.15.0-39-generic
• USN-3822-2: linux-image-3.13.0-162-generic, linux-image-generic-lts-trusty, linux-image-generic-lpae-lts-trusty, linux-image-3.13.0-162-generic-lpae, linux-lts-trusty
• USN-3822-1: linux-image-3.13.0-162-powerpc64-smp, linux-image-3.13.0-162-generic, linux-image-3.13.0-162-powerpc64-emb, linux, linux-image-3.13.0-162-powerpc-e500mc, linux-image-3.13.0-162-lowlatency, linux-image-extra-3.13.0-162-generic, linux-image-3.13.0-162-powerpc-e500, linux-image-3.13.0-162-generic-lpae, linux-image-3.13.0-162-powerpc-smp