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.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Kernel | Linux | * | * |
| Red Hat Enterprise Linux 5 | RedHat | kvm-0:83-105.el5_4.22 | * |
| Red Hat Enterprise Virtualization for RHEL-5 | RedHat | rhev-hypervisor-0:5.4-2.1.8.el5_4rhev2_1 | * |
| Kvm | Ubuntu | hardy | * |
| Kvm | Ubuntu | intrepid | * |
| Kvm | Ubuntu | jaunty | * |
| Kvm | Ubuntu | upstream | * |
| Linux | Ubuntu | hardy | * |
| Linux | Ubuntu | intrepid | * |
| Linux | Ubuntu | jaunty | * |
| Linux | Ubuntu | karmic | * |
| Linux | Ubuntu | upstream | * |
| Linux-ec2 | Ubuntu | karmic | * |
| Linux-ec2 | Ubuntu | maverick | * |
| Linux-ec2 | Ubuntu | upstream | * |
| Linux-fsl-imx51 | Ubuntu | karmic | * |
| Linux-lts-backport-maverick | Ubuntu | upstream | * |
| Linux-mvl-dove | Ubuntu | karmic | * |
References
- http://secunia.com/advisories/38492
- http://secunia.com/advisories/38922
- http://www.debian.org/security/2010/dsa-1996
- http://www.mail-archive.com/kvm%40vger.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/oval%3Aorg.mitre.oval%3Adef%3A11095
- https://rhn.redhat.com/errata/RHSA-2010-0088.html
- https://rhn.redhat.com/errata/RHSA-2010-0095.html
- http://secunia.com/advisories/38492
- http://secunia.com/advisories/38922
- http://www.debian.org/security/2010/dsa-1996
- http://www.mail-archive.com/kvm%40vger.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/oval%3Aorg.mitre.oval%3Adef%3A11095
- https://rhn.redhat.com/errata/RHSA-2010-0088.html
- https://rhn.redhat.com/errata/RHSA-2010-0095.html