# CVE-2012-2137: Memory corruption in n/a

> Local attackers can exploit a buffer overflow in the Linux kernel KVM subsystem to cause a crash or execute arbitrary code.

- **Severity:** Medium 6.9 (`AV:L/AC:M/Au:N/C:C/I:C/A:C`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 22 Jan 2013
- **Updated:** 6 Aug 2024
- **Also known as:** DEBIAN-CVE-2012-2137, GHSA-v5cq-57h8-c596

## What is CVE-2012-2137?

CVE-2012-2137 is a medium-severity memory corruption vulnerability in Canonical Ubuntu Linux, published on 22 Jan 2013. It can only be exploited from the same machine or local network, with no action from the victim.

### Official 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.

Weakness: CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer)

## Which versions are affected by CVE-2012-2137?

It affects 2 products.


Products: Canonical Ubuntu Linux, Linux kernel.

## How do I fix CVE-2012-2137?

Apply the vendor's patch.

## Is CVE-2012-2137 being exploited?

There is no known exploitation of CVE-2012-2137 in the wild and no public exploit code.

## Other vulnerabilities in Canonical Ubuntu Linux

- [CVE-2020-11651](https://insights.sbomify.com/CVE-2020-11651/): SaltStack Salt Authentication Bypass (critical 9.8, exploited in the wild)
- [CVE-2020-7247](https://insights.sbomify.com/CVE-2020-7247/): OpenSMTPD Remote Code Execution (critical 9.8, exploited in the wild)
- [CVE-2019-16928](https://insights.sbomify.com/CVE-2019-16928/): Exim Out-of-bounds Write (critical 9.8, exploited in the wild)
- [CVE-2018-6789](https://insights.sbomify.com/CVE-2018-6789/): Exim Buffer Overflow (critical 9.8, exploited in the wild)
- [CVE-2015-2590](https://insights.sbomify.com/CVE-2015-2590/): Oracle Java SE and Java SE Embedded Remote Code Execution (critical 9.8, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2012-2137 and fix it if it is affected.

What it is: CVE-2012-2137 is a medium-severity memory corruption vulnerability in Canonical Ubuntu Linux, published on 22 Jan 2013. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2012-2137 in the wild and no public exploit code.

Affected product: Canonical Ubuntu Linux. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2012-2137/ (Markdown: https://insights.sbomify.com/CVE-2012-2137/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2012-2137
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2012-2137
- OSV: https://osv.dev/vulnerability/CVE-2012-2137

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From sbomify Insights: https://insights.sbomify.com/CVE-2012-2137/
Summaries are generated and may contain mistakes; the official description above is the record.