Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Kernel | All versions |
Related Weaknesses (CWE)
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%3
- https://rhn.redhat.com/errata/RHSA-2010-0088.htmlVendor Advisory
- https://rhn.redhat.com/errata/RHSA-2010-0095.htmlPatchVendor Advisory
- http://secunia.com/advisories/38492
- http://secunia.com/advisories/38922
FAQ
What is CVE-2010-0309?
CVE-2010-0309 is a vulnerability with a CVSS score of 6.8 (MEDIUM). 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 o...
How severe is CVE-2010-0309?
CVE-2010-0309 has been rated MEDIUM with a CVSS base score of 6.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2010-0309?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Kernel.