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CVE-2010-0309
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…
- 6.8MediumCVSS base score
- 2.8%Exploitation in 30 daysEPSS · top 14% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By redhat
- 31 days later
· 31 days later
Published
- 14 years later
· 14 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Medium6.8 | AV:N/AC:L/Au:S/C:N/I:N/A:C |
- EPSS (exploitation in 30 days)
- 2.8% · top 14% of all CVEs (10 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.8.
Affected products
n/a
- affected n/a
References
13
- 38158 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- USN-914-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- ADV-2010-0638 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
- RHSA-2010:0088 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- 38922 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- [oss-security] 20100202 Re: CVE request - kvm: cat /dev/port in the guest can cause host DoS (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- DSA-1996 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- oval:org.mitre.oval:def:11095 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
- https://bugzilla.redhat.com/show_bug.cgi?id=560887 (opens in a new tab)x_refsource_CONFIRMx_transferred
- [oss-security] 20100202 CVE request - kvm: cat /dev/port in the guest can cause host DoS (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [kvm] 20100129 KVM: PIT: control word is write-only (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- RHSA-2010:0095 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- 38492 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2010-0340 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2010-0309)Record last updated .