CVE-2012-2121
MEDIUM · CVSS 4.9EPSS 0.4%EU EUVD
The KVM implementation in the Linux kernel before 3.3.4 does not properly manage the relationships between memory slots and the iommu, which allows guest OS users to cause a denial of service (memory leak and host OS crash) by leveraging administrative access to the guest OS to conduct hotunplug and hotplug operations on devices.
Key facts
- CVSS score
- 4.9 (v2.0)
- Severity
- MEDIUM
- CVSS vector
AV:L/AC:L/Au:N/C:N/I:N/A:C- Weakness (CWE)
- CWE-264
- EPSS score
- 0.4% (36th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2012-2123)
- Published
- May 17, 2012
- NVD last modified
- June 16, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2012-2123 in the EU Vulnerability Database. Last updated in EUVD on August 6, 2024.
View on the EU Vulnerability DatabaseAffected products
- linux / linux kernel
References
- http://rhn.redhat.com/errata/RHSA-2012-0676.html
- http://rhn.redhat.com/errata/RHSA-2012-0743.html
- http://secunia.com/advisories/50732
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.3.4
- http://www.openwall.com/lists/oss-security/2012/04/19/16
- http://www.securitytracker.com/id?1027083
- http://www.ubuntu.com/usn/USN-1577-1
- http://www.ubuntu.com/usn/USN-2036-1
- http://www.ubuntu.com/usn/USN-2037-1
- https://bugzilla.redhat.com/show_bug.cgi?id=814149
- https://github.com/torvalds/linux/commit/09ca8e1173bcb12e2a449698c9ae3b86a8a10195
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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