USN-3697-1: Linux kernel vulnerabilities

Releases

• Ubuntu 17.10

Packages

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

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)

Update instructions

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

Ubuntu 17.10

• linux-image-generic - 4.13.0.46.49
• linux-image-generic-lpae - 4.13.0.46.49
• linux-image-4.13.0-1023-raspi2 - 4.13.0-1023.24
• linux-image-4.13.0-46-generic - 4.13.0-46.51
• linux-image-4.13.0-46-generic-lpae - 4.13.0-46.51
• linux-image-lowlatency - 4.13.0.46.49
• linux-image-raspi2 - 4.13.0.1023.21
• linux-image-4.13.0-46-lowlatency - 4.13.0-46.51

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-2018-1130
• CVE-2018-11508
• CVE-2018-5750
• CVE-2018-5803
• CVE-2018-6927
• CVE-2018-7755
• CVE-2018-7757

Related notices

• USN-3654-2: linux-image-4.4.0-127-lowlatency, linux-image-4.4.0-127-powerpc-e500mc, linux-image-extra-4.4.0-127-generic, linux-image-4.4.0-127-generic-lpae, linux-image-4.4.0-1022-aws, linux-image-4.4.0-127-powerpc-smp, linux-aws, linux-image-4.4.0-127-powerpc64-smp, linux-image-4.4.0-127-powerpc64-emb, linux-lts-xenial, linux-image-4.4.0-127-generic
• USN-3698-2: linux-image-generic-lpae-lts-trusty, linux-image-3.13.0-153-generic-lpae, linux-image-3.13.0-153-generic, linux-lts-trusty, linux-image-generic-lts-trusty
• USN-3654-1: linux-image-4.4.0-127-lowlatency, linux-image-4.4.0-127-powerpc-e500mc, linux-image-extra-4.4.0-127-generic, linux-image-4.4.0-127-generic-lpae, linux, linux-kvm, linux-image-4.4.0-127-powerpc-smp, linux-aws, linux-image-4.4.0-1060-aws, linux-image-4.4.0-127-powerpc64-smp, linux-image-4.4.0-127-powerpc64-emb, linux-image-4.4.0-127-generic, linux-image-4.4.0-1026-kvm
• USN-3656-1: linux-image-4.4.0-1093-snapdragon, linux-image-4.4.0-1090-raspi2, linux-raspi2, linux-snapdragon
• USN-3698-1: linux-image-3.13.0-153-powerpc-e500, linux, linux-image-3.13.0-153-powerpc-smp, linux-image-3.13.0-153-generic-lpae, linux-image-3.13.0-153-generic, linux-image-3.13.0-153-lowlatency, linux-image-3.13.0-153-powerpc64-emb, linux-image-extra-3.13.0-153-generic, linux-image-3.13.0-153-powerpc64-smp, linux-image-3.13.0-153-powerpc-e500mc
• USN-3697-2: linux-oem, linux-image-4.13.0-1031-oem
• USN-3695-2: linux-hwe, linux-azure, linux-image-4.15.0-24-lowlatency, linux-image-unsigned-4.15.0-1014-azure, linux-image-unsigned-4.15.0-24-lowlatency, linux-image-unsigned-4.15.0-24-generic, linux-image-4.15.0-24-generic, linux-image-4.15.0-24-generic-lpae
• USN-3695-1: linux, linux-image-4.15.0-1013-raspi2, linux-raspi2, linux-azure, linux-image-unsigned-4.15.0-24-generic, linux-image-4.15.0-1010-gcp, linux-gcp, linux-image-unsigned-4.15.0-1009-oem, linux-image-unsigned-4.15.0-24-lowlatency, linux-image-4.15.0-24-generic, linux-image-4.15.0-24-generic-lpae, linux-image-4.15.0-1012-kvm, linux-kvm, linux-image-4.15.0-24-lowlatency, linux-aws, linux-image-unsigned-4.15.0-1014-azure, linux-oem, linux-image-4.15.0-24-snapdragon, linux-image-4.15.0-1011-aws
• USN-3631-2: linux-image-4.4.0-121-powerpc64-smp, linux-image-4.4.0-121-powerpc-e500mc, linux-image-4.4.0-121-powerpc-smp, linux-image-4.4.0-121-generic, linux-aws, linux-image-4.4.0-121-generic-lpae, linux-lts-xenial, linux-image-4.4.0-121-powerpc64-emb, linux-image-extra-4.4.0-121-generic, linux-image-4.4.0-1017-aws, linux-image-4.4.0-121-lowlatency
• USN-3631-1: linux-image-4.4.0-1090-snapdragon, linux-image-4.4.0-121-powerpc64-smp, linux-image-4.4.0-1087-raspi2, linux-image-4.4.0-121-powerpc-e500mc, linux, linux-image-4.4.0-121-powerpc-smp, linux-snapdragon, linux-image-4.4.0-1021-kvm, linux-image-4.4.0-121-generic, linux-image-4.4.0-121-lowlatency, linux-kvm, linux-aws, linux-image-4.4.0-121-generic-lpae, linux-image-4.4.0-121-powerpc64-emb, linux-image-extra-4.4.0-121-generic, linux-image-4.4.0-1055-aws, linux-raspi2
• USN-3619-2: linux-image-extra-4.4.0-119-generic, linux-image-4.4.0-1016-aws, linux-image-4.4.0-119-powerpc-smp, linux-image-4.4.0-119-generic-lpae, linux-image-4.4.0-119-powerpc64-emb, linux-image-4.4.0-119-powerpc-e500mc, linux-image-4.4.0-119-powerpc64-smp, linux-aws, linux-lts-xenial, linux-image-4.4.0-119-generic, linux-image-4.4.0-119-lowlatency
• USN-3619-1: linux-image-extra-4.4.0-119-generic, linux-image-4.4.0-119-powerpc-smp, linux-image-4.4.0-119-generic-lpae, linux-image-4.4.0-119-powerpc64-emb, linux, linux-image-4.4.0-119-powerpc-e500mc, linux-kvm, linux-snapdragon, linux-image-4.4.0-119-powerpc64-smp, linux-aws, linux-image-4.4.0-1020-kvm, linux-image-4.4.0-1088-snapdragon, linux-image-4.4.0-119-generic, linux-image-4.4.0-119-lowlatency, linux-raspi2, linux-image-4.4.0-1054-aws, linux-image-4.4.0-1086-raspi2
• USN-3696-2: linux-image-4.4.0-130-generic, linux-image-4.4.0-1024-aws, linux-image-4.4.0-130-generic-lpae, linux-image-4.4.0-130-powerpc64-smp, linux-image-extra-4.4.0-130-generic, linux-image-4.4.0-130-powerpc64-emb, linux-aws, linux-image-4.4.0-130-powerpc-smp, linux-image-4.4.0-130-powerpc-e500mc, linux-lts-xenial, linux-image-4.4.0-130-lowlatency
• USN-3696-1: linux-image-4.4.0-1092-raspi2, linux-image-4.4.0-1029-kvm, linux-image-4.4.0-130-generic, linux, linux-image-4.4.0-130-generic-lpae, linux-snapdragon, linux-image-4.4.0-130-powerpc64-smp, linux-image-extra-4.4.0-130-generic, linux-kvm, linux-image-4.4.0-130-powerpc64-emb, linux-aws, linux-image-4.4.0-130-powerpc-smp, linux-image-4.4.0-130-powerpc-e500mc, linux-raspi2, linux-image-4.4.0-1062-aws, linux-image-4.4.0-130-lowlatency, linux-image-4.4.0-1095-snapdragon