# CVE-2012-6703: Integer overflow in n/a

> Local attackers can cause denial of service via crafted ioctl calls in the Linux kernel ALSA subsystem due to an integer overflow.

- **Severity:** High 7.8 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **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:** 29 Jun 2016
- **Updated:** 6 Aug 2024
- **Also known as:** DEBIAN-CVE-2012-6703, GHSA-rr7c-wxq4-m9xf

## What is CVE-2012-6703?

CVE-2012-6703 is a high-severity vulnerability in Linux kernel, published on 29 Jun 2016. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Integer overflow in the snd_compr_allocate_buffer function in sound/core/compress_offload.c in the ALSA subsystem in the Linux kernel before 3.6-rc6-next-20120917 allows local users to cause a denial of service (insufficient memory allocation) or possibly have unspecified other impact via a crafted SNDRV_COMPRESS_SET_PARAMS ioctl call.

Weakness: CWE-190 (Integer Overflow or Wraparound)

## Which versions are affected by CVE-2012-6703?

It affects 1 product.


Products: Linux kernel.

## How do I fix CVE-2012-6703?

Apply the vendor's patch.

## Is CVE-2012-6703 being exploited?

There is no known exploitation of CVE-2012-6703 in the wild and no public exploit code.

## Other vulnerabilities in Linux kernel

- [CVE-2026-53266](https://insights.sbomify.com/CVE-2026-53266/): Linux Kernel Out-of-Bounds Write (high 8.8, exploited in the wild)
- [CVE-2013-6282](https://insights.sbomify.com/CVE-2013-6282/): Linux Kernel Improper Input Validation (high 8.8, exploited in the wild)
- [CVE-2022-0185](https://insights.sbomify.com/CVE-2022-0185/): Linux Kernel Heap-Based Buffer Overflow (high 8.4, exploited in the wild)
- [CVE-2013-2094](https://insights.sbomify.com/CVE-2013-2094/): Linux Kernel Privilege Escalation (high 8.4, exploited in the wild)
- [CVE-2026-53362](https://insights.sbomify.com/CVE-2026-53362/): Linux Kernel Unspecified (high 7.8, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2012-6703 and fix it if it is affected.

What it is: CVE-2012-6703 is a high-severity vulnerability in Linux kernel, published on 29 Jun 2016. 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-2012-6703 in the wild and no public exploit code.

Affected product: Linux kernel. 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-2012-6703/ (Markdown: https://insights.sbomify.com/CVE-2012-6703/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2012-6703
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2012-6703
- OSV: https://osv.dev/vulnerability/CVE-2012-6703

---
From sbomify Insights: https://insights.sbomify.com/CVE-2012-6703/
Summaries are generated and may contain mistakes; the official description above is the record.