UBUNTU-CVE-2012-1179

Description

The Linux kernel before 3.3.1, when KVM is used, allows guest OS users to cause a denial of service (host OS crash) by leveraging administrative access to the guest OS, related to the pmd_none_or_clear_bad function and page faults for huge pages. A privileged user in the KVM guest can use this flaw to crash the host. An unprivileged local user could use this flaw to crash the system.

Affected Systems

• ubuntu•linux

  < 3.11.0-12.19 | < 4.2.0-16.19

• ubuntu•linux-aws

  < 4.4.0-1002.2 | < 4.4.0-1001.10

• ubuntu•linux-flo

  < 3.4.0-1.3 | < 3.4.0-5.22

• ubuntu•linux-gke

  < 4.4.0-1003.3

• ubuntu•linux-goldfish

  < 3.4.0-1.9 | < 3.4.0-4.27

• ubuntu•linux-hwe

  < 4.8.0-36.36~16.04.1

• ubuntu•linux-lts-utopic

  < 3.16.0-25.33~14.04.2

• ubuntu•linux-lts-vivid

  < 3.19.0-18.18~14.04.1

• ubuntu•linux-lts-wily

  < 4.2.0-18.22~14.04.1

• ubuntu•linux-lts-xenial

  < 4.4.0-13.29~14.04.1

• ubuntu•linux-mako

  < 3.4.0-3.21 | < 3.4.0-7.40

• ubuntu•linux-manta

  < 3.4.0-4.19

• ubuntu•linux-raspi2

  < 4.2.0-1013.19

• ubuntu•linux-snapdragon

  < 4.4.0-1012.12

References (5)

• https://ubuntu.com/security/CVE-2012-1179
• https://ubuntu.com/security/notices/USN-1431-1
• https://ubuntu.com/security/notices/USN-1433-1
• https://ubuntu.com/security/notices/USN-1446-1
• https://www.cve.org/CVERecord?id=CVE-2012-1179