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Debian: DSA-2650-2 Critical Libvirt KVM Access Regression

The recent security update for libvirt was found to cause a regression. The kvm/qemu processes weren't run as the `kvm` user anymore in order to fix the file/device ownership changes, but the processes where not correctly configured to use the `kvm` group either. When the user would . -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 - ------------------------------------------------------------------------- Debian Security Advisory DSA-2650-2 This email address is being protected from spambots. You need JavaScript enabled to view it. http://www.debian.org/security/ Yves-Alexis Perez March 17, 2013 http://www.debian.org/security/faq - ------------------------------------------------------------------------- Package : libvirt Vulnerability : files and device nodes ownership change to kvm group Problem type : local Debian-specific: yes CVE ID : CVE-2013-1766 Debian Bug : 701649 The recent security update for libvirt was found to cause a regression. The kvm/qemu processes weren't run as the `kvm` user anymore in order to fix the file/device ownership changes, but the processes where not correctly configured to use the `kvm` group either. When the user would try to run a virtual machine, the process was denied access to the /dev/kvm device node, preventing the virtual machine to run. For the stable distribution (squeeze), this problem has been fixed in version 0.8.3-5+squeeze5. We recommend that you upgrade your libvirt packages. Further information about Debian Security Advisories, how to apply these updates to your system and frequently asked questions can be found at: http://www.debian.org/security/ Mailing list: This email address is being protected from spambots. You need JavaScript enabled to view it. . A security patch labeled DSA-2650-2 for Libvirt resolves a regression that affects KVM accessibility. Users are urged to perform updates without delay to mitigate the issue.. Libvirt Security Update, Debian DSA-2650-2, KVM Access Fix. . Severity: Critical. LinuxSecurity.com Team

Mar 17, 2013 •Critical Debian