Advisory Published
CVE Published
Updated

CVE-2014-3610

First published: Sun Sep 21 2014(Updated: )

If the guest writes a noncanonical value to certain MSR registers, KVM will write that value to the MSR in the host context and a #GP will be raised leading to kernel panic. A privileged guest user can use this flaw to crash the host. Enabling CONFIG_PARAVIRT when building the kernel mitigates this issue because wrmsrl() ends up invoking safe msr write variant. Acknowledgements: Red Hat would like to thank Lars Bull of Google and Nadav Amit for reporting this issue.

Credit: secalert@redhat.com secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
Linux Linux kernel<3.17.2
Canonical Ubuntu Linux=10.04
Canonical Ubuntu Linux=12.04
Debian Debian Linux=7.0
Opensuse Evergreen=11.4
SUSE SUSE Linux Enterprise Server=11-sp2
debian/linux
5.10.223-1
5.10.226-1
6.1.115-1
6.1.119-1
6.11.10-1
6.12.3-1

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