CVE-2010-0309 Information

Description

The pit_ioport_read function in the Programmable Interval Timer (PIT) emulation in i8254.c in KVM 83 does not properly use the pit_state data structure which allows guest OS users to cause a denial of service (host OS crash or hang) by attempting to read the /dev/port file.

Reference

http://secunia.com/advisories/38492 http://secunia.com/advisories/38922 http://www.debian.org/security/2010/dsa-1996 http://www.mail-archive.com/kvm@vger.kernel.org/msg28002.html http://www.openwall.com/lists/oss-security/2010/02/02/1 http://www.openwall.com/lists/oss-security/2010/02/02/4 http://www.securityfocus.com/bid/38158 http://www.ubuntu.com/usn/USN-914-1 http://www.vupen.com/english/advisories/2010/0638 https://bugzilla.redhat.com/show_bug.cgi?id=560887 https://oval.cisecurity.org/repository/search/definition/oval3Aorg.mitre.oval3Adef3A11095 https://rhn.redhat.com/errata/RHSA-2010-0088.html https://rhn.redhat.com/errata/RHSA-2010-0095.html