Advisory Published

USN-3641-1: Linux kernel vulnerabilities

First published: Tue May 08 2018(Updated: )

Nick Peterson discovered that the Linux kernel did not properly handle debug exceptions following a MOV/POP to SS instruction. A local attacker could use this to cause a denial of service (system crash). This issue only affected the amd64 architecture. (CVE-2018-8897) Andy Lutomirski discovered that the KVM subsystem of the Linux kernel did not properly emulate the ICEBP instruction following a MOV/POP to SS instruction. A local attacker in a KVM virtual machine could use this to cause a denial of service (guest VM crash) or possibly escalate privileges inside of the virtual machine. This issue only affected the i386 and amd64 architectures. (CVE-2018-1087) Andy Lutomirski discovered that the Linux kernel did not properly perform error handling on virtualized debug registers. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-1000199)

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/linux-image-4.13.0-1019-raspi2<4.13.0-1019.20
4.13.0-1019.20
Ubuntu OpenSSH Client=17.10
All of
ubuntu/linux-image-4.13.0-41-generic<4.13.0-41.46
4.13.0-41.46
Ubuntu OpenSSH Client=17.10
All of
ubuntu/linux-image-4.13.0-41-generic-lpae<4.13.0-41.46
4.13.0-41.46
Ubuntu OpenSSH Client=17.10
All of
ubuntu/linux-image-4.13.0-41-lowlatency<4.13.0-41.46
4.13.0-41.46
Ubuntu OpenSSH Client=17.10
All of
ubuntu/linux-image-generic<4.13.0.41.44
4.13.0.41.44
Ubuntu OpenSSH Client=17.10
All of
ubuntu/linux-image-generic-lpae<4.13.0.41.44
4.13.0.41.44
Ubuntu OpenSSH Client=17.10
All of
ubuntu/linux-image-lowlatency<4.13.0.41.44
4.13.0.41.44
Ubuntu OpenSSH Client=17.10
All of
ubuntu/linux-image-raspi2<4.13.0.1019.17
4.13.0.1019.17
Ubuntu OpenSSH Client=17.10
All of
ubuntu/linux-image-4.13.0-1015-gcp<4.13.0-1015.19
4.13.0-1015.19
Ubuntu OpenSSH Client=16.04
All of
ubuntu/linux-image-4.13.0-1016-azure<4.13.0-1016.19
4.13.0-1016.19
Ubuntu OpenSSH Client=16.04
All of
ubuntu/linux-image-4.13.0-1026-oem<4.13.0-1026.29
4.13.0-1026.29
Ubuntu OpenSSH Client=16.04
All of
ubuntu/linux-image-4.13.0-41-generic<4.13.0-41.46~16.04.1
4.13.0-41.46~16.04.1
Ubuntu OpenSSH Client=16.04
All of
ubuntu/linux-image-4.13.0-41-generic-lpae<4.13.0-41.46~16.04.1
4.13.0-41.46~16.04.1
Ubuntu OpenSSH Client=16.04
All of
ubuntu/linux-image-4.13.0-41-lowlatency<4.13.0-41.46~16.04.1
4.13.0-41.46~16.04.1
Ubuntu OpenSSH Client=16.04
All of
ubuntu/linux-image-4.4.0-1023-kvm<4.4.0-1023.28
4.4.0-1023.28
Ubuntu OpenSSH Client=16.04
All of
ubuntu/linux-image-4.4.0-1057-aws<4.4.0-1057.66
4.4.0-1057.66
Ubuntu OpenSSH Client=16.04
All of
ubuntu/linux-image-4.4.0-1089-raspi2<4.4.0-1089.97
4.4.0-1089.97
Ubuntu OpenSSH Client=16.04
All of
ubuntu/linux-image-4.4.0-1092-snapdragon<4.4.0-1092.97
4.4.0-1092.97
Ubuntu OpenSSH Client=16.04
All of
ubuntu/linux-image-4.4.0-124-generic<4.4.0-124.148
4.4.0-124.148
Ubuntu OpenSSH Client=16.04
All of
ubuntu/linux-image-4.4.0-124-generic-lpae<4.4.0-124.148
4.4.0-124.148
Ubuntu OpenSSH Client=16.04
All of
ubuntu/linux-image-4.4.0-124-lowlatency<4.4.0-124.148
4.4.0-124.148
Ubuntu OpenSSH Client=16.04
All of
ubuntu/linux-image-4.4.0-124-powerpc-e500mc<4.4.0-124.148
4.4.0-124.148
Ubuntu OpenSSH Client=16.04
All of
ubuntu/linux-image-4.4.0-124-powerpc-smp<4.4.0-124.148
4.4.0-124.148
Ubuntu OpenSSH Client=16.04
All of
ubuntu/linux-image-4.4.0-124-powerpc64-emb<4.4.0-124.148
4.4.0-124.148
Ubuntu OpenSSH Client=16.04
All of
ubuntu/linux-image-4.4.0-124-powerpc64-smp<4.4.0-124.148
4.4.0-124.148
Ubuntu OpenSSH Client=16.04
All of
ubuntu/linux-image-4.4.0-9027-euclid<4.4.0-9027.29
4.4.0-9027.29
Ubuntu OpenSSH Client=16.04
All of
ubuntu/linux-image-3.13.0-147-generic<3.13.0-147.196
3.13.0-147.196
Ubuntu OpenSSH Client=14.04
All of
ubuntu/linux-image-3.13.0-147-generic-lpae<3.13.0-147.196
3.13.0-147.196
Ubuntu OpenSSH Client=14.04
All of
ubuntu/linux-image-3.13.0-147-lowlatency<3.13.0-147.196
3.13.0-147.196
Ubuntu OpenSSH Client=14.04
All of
ubuntu/linux-image-3.13.0-147-powerpc-e500<3.13.0-147.196
3.13.0-147.196
Ubuntu OpenSSH Client=14.04
All of
ubuntu/linux-image-3.13.0-147-powerpc-e500mc<3.13.0-147.196
3.13.0-147.196
Ubuntu OpenSSH Client=14.04
All of
ubuntu/linux-image-3.13.0-147-powerpc-smp<3.13.0-147.196
3.13.0-147.196
Ubuntu OpenSSH Client=14.04
All of
ubuntu/linux-image-3.13.0-147-powerpc64-emb<3.13.0-147.196
3.13.0-147.196
Ubuntu OpenSSH Client=14.04
All of
ubuntu/linux-image-3.13.0-147-powerpc64-smp<3.13.0-147.196
3.13.0-147.196
Ubuntu OpenSSH Client=14.04
All of
ubuntu/linux-image-4.4.0-1019-aws<4.4.0-1019.19
4.4.0-1019.19
Ubuntu OpenSSH Client=14.04
All of
ubuntu/linux-image-4.4.0-124-generic<4.4.0-124.148~14.04.1
4.4.0-124.148~14.04.1
Ubuntu OpenSSH Client=14.04
All of
ubuntu/linux-image-4.4.0-124-generic-lpae<4.4.0-124.148~14.04.1
4.4.0-124.148~14.04.1
Ubuntu OpenSSH Client=14.04
All of
ubuntu/linux-image-4.4.0-124-lowlatency<4.4.0-124.148~14.04.1
4.4.0-124.148~14.04.1
Ubuntu OpenSSH Client=14.04
All of
ubuntu/linux-image-4.4.0-124-powerpc-e500mc<4.4.0-124.148~14.04.1
4.4.0-124.148~14.04.1
Ubuntu OpenSSH Client=14.04
All of
ubuntu/linux-image-4.4.0-124-powerpc-smp<4.4.0-124.148~14.04.1
4.4.0-124.148~14.04.1
Ubuntu OpenSSH Client=14.04
All of
ubuntu/linux-image-4.4.0-124-powerpc64-emb<4.4.0-124.148~14.04.1
4.4.0-124.148~14.04.1
Ubuntu OpenSSH Client=14.04
All of
ubuntu/linux-image-4.4.0-124-powerpc64-smp<4.4.0-124.148~14.04.1
4.4.0-124.148~14.04.1
Ubuntu OpenSSH Client=14.04

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Reference Links

Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

  • What is the severity of USN-3641-1?

    The severity of USN-3641-1 is considered high due to the potential for local attackers to cause a system crash.

  • How do I fix USN-3641-1?

    To fix USN-3641-1, update your system to the latest version of the kernel identified in the advisory.

  • What architectures are affected by USN-3641-1?

    USN-3641-1 specifically affects the amd64 architecture.

  • What products are impacted by USN-3641-1?

    USN-3641-1 affects Ubuntu 17.10 and several related Linux kernel images.

  • Can USN-3641-1 cause data loss?

    While USN-3641-1 primarily leads to denial of service, it may indirectly result in data loss if a system crash occurs during critical operations.

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