# CVE-2007-1734: Information disclosure in n/a

> Local attackers can read kernel memory or cause a denial of service via improper bounds checking in the DCCP socket option handler.

- **Severity:** High 7.2 (`AV:L/AC:L/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:** No
- **Published:** 28 Mar 2007
- **Updated:** 7 Aug 2024
- **Also known as:** GHSA-92h4-4w9c-9q5w

## What is CVE-2007-1734?

CVE-2007-1734 is a high-severity vulnerability in Linux kernel, published on 28 Mar 2007. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

The DCCP support in the do_dccp_getsockopt function in net/dccp/proto.c in Linux kernel 2.6.20 and later does not verify the upper bounds of the optlen value, which allows local users running on certain architectures to read kernel memory or cause a denial of service (oops), a related issue to CVE-2007-1730.

## Which versions are affected by CVE-2007-1734?

It affects 1 product.


Products: Linux kernel.

## How do I fix CVE-2007-1734?

No fix has been published for CVE-2007-1734 yet. Limit exposure of the affected software until one is available.

## Is CVE-2007-1734 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2007-1734 exists.

Public exploit code:

- Linux Kernel 2.6.20 with DCCP Support - Memory Disclosure (1) (exploitdb)
- Linux Kernel 2.6.20 with DCCP Support - Memory Disclosure (2) (exploitdb)

## 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-2007-1734 and fix it if it is affected.

What it is: CVE-2007-1734 is a high-severity vulnerability in Linux kernel, published on 28 Mar 2007. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2007-1734 exists.

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-2007-1734/ (Markdown: https://insights.sbomify.com/CVE-2007-1734/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2007-1734
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2007-1734
- OSV: https://osv.dev/vulnerability/CVE-2007-1734

---
From sbomify Insights: https://insights.sbomify.com/CVE-2007-1734/
Summaries are generated and may contain mistakes; the official description above is the record.