CVE-2015-0239
Published: 23 January 2015
The em_sysenter function in arch/x86/kvm/emulate.c in the Linux kernel before 3.18.5, when the guest OS lacks SYSENTER MSR initialization, allows guest OS users to gain guest OS privileges or cause a denial of service (guest OS crash) by triggering use of a 16-bit code segment for emulation of a SYSENTER instruction.
From the Ubuntu security team
A flaw was discovered in the Kernel Virtual Machine's (KVM) emulation of the SYSTENTER instruction when the guest OS does not initialize the SYSENTER MSRs. A guest OS user could exploit this flaw to cause a denial of service of the guest OS (crash) or potentially gain privileges on the guest OS.
Priority
High
Status
| Package | Release | Status |
|---|---|---|
|
linux Launchpad, Ubuntu, Debian |
upstream |
Released
(3.19~rc6)
|
|
Patches: Introduced by 6aa8b732ca01c3d7a54e93f4d701b8aabbe60fb7 |
||
|
linux-armadaxp Launchpad, Ubuntu, Debian |
upstream |
Released
(3.19~rc6)
|
| This package is not directly supported by the Ubuntu Security Team | ||
|
linux-aws Launchpad, Ubuntu, Debian |
upstream |
Released
(3.19~rc6)
|
|
linux-ec2 Launchpad, Ubuntu, Debian |
upstream |
Released
(3.19~rc6)
|
|
linux-flo Launchpad, Ubuntu, Debian |
upstream |
Released
(3.19~rc6)
|
|
linux-fsl-imx51 Launchpad, Ubuntu, Debian |
upstream |
Released
(3.19~rc6)
|
|
linux-gke Launchpad, Ubuntu, Debian |
upstream |
Released
(3.19~rc6)
|
|
linux-goldfish Launchpad, Ubuntu, Debian |
upstream |
Released
(3.19~rc6)
|
|
linux-grouper Launchpad, Ubuntu, Debian |
upstream |
Released
(3.19~rc6)
|
|
linux-hwe Launchpad, Ubuntu, Debian |
upstream |
Released
(3.19~rc6)
|
|
linux-hwe-edge Launchpad, Ubuntu, Debian |
upstream |
Released
(3.19~rc6)
|
|
linux-linaro-omap Launchpad, Ubuntu, Debian |
upstream |
Released
(3.19~rc6)
|
|
linux-linaro-shared Launchpad, Ubuntu, Debian |
upstream |
Released
(3.19~rc6)
|
|
linux-linaro-vexpress Launchpad, Ubuntu, Debian |
upstream |
Released
(3.19~rc6)
|
|
linux-lts-quantal Launchpad, Ubuntu, Debian |
upstream |
Released
(3.19~rc6)
|
| This package is not directly supported by the Ubuntu Security Team | ||
|
linux-lts-raring Launchpad, Ubuntu, Debian |
upstream |
Released
(3.19~rc6)
|
|
linux-lts-saucy Launchpad, Ubuntu, Debian |
upstream |
Released
(3.19~rc6)
|
| This package is not directly supported by the Ubuntu Security Team | ||
|
linux-lts-trusty Launchpad, Ubuntu, Debian |
upstream |
Released
(3.19~rc6)
|
|
linux-lts-utopic Launchpad, Ubuntu, Debian |
upstream |
Released
(3.19~rc6)
|
|
linux-lts-vivid Launchpad, Ubuntu, Debian |
upstream |
Released
(3.19~rc6)
|
|
linux-lts-wily Launchpad, Ubuntu, Debian |
upstream |
Released
(3.19~rc6)
|
|
linux-lts-xenial Launchpad, Ubuntu, Debian |
upstream |
Released
(3.19~rc6)
|
|
linux-maguro Launchpad, Ubuntu, Debian |
upstream |
Released
(3.19~rc6)
|
|
linux-mako Launchpad, Ubuntu, Debian |
upstream |
Released
(3.19~rc6)
|
|
linux-manta Launchpad, Ubuntu, Debian |
upstream |
Released
(3.19~rc6)
|
|
linux-mvl-dove Launchpad, Ubuntu, Debian |
upstream |
Released
(3.19~rc6)
|
|
linux-qcm-msm Launchpad, Ubuntu, Debian |
upstream |
Released
(3.19~rc6)
|
|
linux-raspi2 Launchpad, Ubuntu, Debian |
upstream |
Released
(3.19~rc6)
|
|
linux-snapdragon Launchpad, Ubuntu, Debian |
upstream |
Released
(3.19~rc6)
|
|
linux-ti-omap4 Launchpad, Ubuntu, Debian |
upstream |
Released
(3.19~rc6)
|
Notes
| Author | Note |
|---|---|
| jdstrand | android kernels (flo, goldfish, grouper, maguro, mako and manta) are not supported on the Ubuntu Touch 14.04 preview kernels linux-lts-saucy no longer receives official support linux-lts-quantal no longer receives official support |
References
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-0239
- https://ubuntu.com/security/notices/USN-2513-1
- https://ubuntu.com/security/notices/USN-2514-1
- https://ubuntu.com/security/notices/USN-2515-1
- https://ubuntu.com/security/notices/USN-2516-1
- https://ubuntu.com/security/notices/USN-2517-1
- https://ubuntu.com/security/notices/USN-2518-1
- NVD
- Launchpad
- Debian