What’s Vulnerable › Vulnerabilities

CVE-2012-2137

• Severity: medium (CVSS 6.9 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2013-01-22 · updated 2026-06-16
• Weakness: CWE-119

Description

Buffer overflow in virt/kvm/irq_comm.c in the KVM subsystem in the Linux kernel before 3.2.24 allows local users to cause a denial of service (crash) and possibly execute arbitrary code via vectors related to Message Signaled Interrupts (MSI), irq routing entries, and an incorrect check by the setup_routing_entry function before invoking the kvm_set_irq function.

Affected products

• Canonical Ubuntu Linux: 10.04, 11.10, 12.04
• Linux kernel: from 2.6.33 before 3.0.72; from 3.1 before 3.2.24; from 3.3 before 3.4.81 — fixed in 3.0.72, 3.2.24, 3.4.81

How to fix

Upgrade to a fixed version: Linux kernel 3.0.72, 3.2.24, 3.4.81. Check the vendor advisory for mitigations.

References

• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commitdiff%3Bh=f2ebd422f71cda9c791f76f85d2ca102ae34a1ed
• http://lists.opensuse.org/opensuse-security-announce/2013-06/msg00005.html
• http://marc.info/?l=bugtraq&m=139447903326211&w=2
• http://rhn.redhat.com/errata/RHSA-2012-0743.html
• http://secunia.com/advisories/50952
• http://secunia.com/advisories/50961
• http://ubuntu.5.n6.nabble.com/PATCH-Oneiric-CVE-2012-2137-KVM-Fix-buffer-overflow-in-kvm-set-irq-td4990566.html
• http://ubuntu.com/usn/usn-1529-1
• http://ubuntu.com/usn/usn-1607-1
• http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.2.24
• http://www.securityfocus.com/bid/54063
• http://www.ubuntu.com/usn/USN-1594-1

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