CVE-2010-0309

Summary

CVE	CVE-2010-0309
State	PUBLISHED
Assigner	redhat
Source Priority	CVE Program / NVD first with legacy fallback
Published	2010-02-12 19:30:00 UTC
Updated	2026-04-29 01:13:23 UTC
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.

Risk And Classification

Primary CVSS: v2.0 6.8 from [email protected]

AV:N/AC:L/Au:S/C:N/I:N/A:C

Problem Types: CWE-16 | n/a

CVSS v2.0 Breakdown

Access Vector

Network

Access Complexity

Low

Authentication

Single

Confidentiality

None

Integrity

None

Availability

Complete

AV:N/AC:L/Au:S/C:N/I:N/A:C

NVD Known Affected Configurations (CPE 2.3)

Type	Vendor	Product	Version	Update	Edition	Language
Application	Linux	Kernel	All	All	All	All

Vendor Declared Affected Products

Source	Vendor	Product	Version	Platforms
CNA	Na	N/a	affected n/a	Not specified

References

Reference	Source	Link	Tags
oss-security - CVE request - kvm: cat /dev/port in the guest can cause host DoS	af854a3a-2127-422b-91ae-364da2661108	www.openwall.com
USN-914-1: Linux kernel vulnerabilities \| Ubuntu	af854a3a-2127-422b-91ae-364da2661108	www.ubuntu.com
oss-security - Re: CVE request - kvm: cat /dev/port in the guest can cause host DoS	af854a3a-2127-422b-91ae-364da2661108	www.openwall.com
Ubuntu update for linux and linux-source-2.6.15 - Secunia.com	af854a3a-2127-422b-91ae-364da2661108	secunia.com
Debian -- Security Information -- DSA-1996-1 linux-2.6	af854a3a-2127-422b-91ae-364da2661108	www.debian.org
Debian update for linux-2.6 - Advisories - Community	af854a3a-2127-422b-91ae-364da2661108	secunia.com
Red Hat Customer Portal	af854a3a-2127-422b-91ae-364da2661108	rhn.redhat.com	Patch, Vendor Advisory
Linux Kernel KVM Multiple Privilege Escalation and Denial of Service Vulnerabilities	af854a3a-2127-422b-91ae-364da2661108	www.securityfocus.com
Bug 560887 – CVE-2010-0309 kvm: cat /dev/port in guest cause the host hang	af854a3a-2127-422b-91ae-364da2661108	bugzilla.redhat.com
Repository / Oval Repository	af854a3a-2127-422b-91ae-364da2661108	oval.cisecurity.org
Webmail- OVH	af854a3a-2127-422b-91ae-364da2661108	www.vupen.com
KVM: PIT: control word is write-only	af854a3a-2127-422b-91ae-364da2661108	www.mail-archive.com
rhn.redhat.com \| Red Hat Support	af854a3a-2127-422b-91ae-364da2661108	rhn.redhat.com	Vendor Advisory
KVM: PIT: control word is write-only	MITRE	www.mail-archive.com
CVE Program record	CVE.ORG	www.cve.org	canonical
NVD vulnerability detail	NVD	nvd.nist.gov	canonical, analysis

No vendor comments have been submitted for this CVE.

Legacy QID Mappings

900101 CBL-Mariner Linux Security Update for kernel 5.10.52.1
900303 CBL-Mariner Linux Security Update for kernel 5.10.57.1
900321 CBL-Mariner Linux Security Update for kernel 5.10.60.1
901407 Common Base Linux Mariner (CBL-Mariner) Security Update for kernel (6509-1)
903479 Common Base Linux Mariner (CBL-Mariner) Security Update for kernel (2697)
906204 Common Base Linux Mariner (CBL-Mariner) Security Update for kernel (2697-1)
906318 Common Base Linux Mariner (CBL-Mariner) Security Update for kernel (6509-2)