---
title: "CVE-2009-2958\n    | Ubuntu"
description: Ubuntu is an open source software operating system that runs from the
  desktop, to the cloud, to all your internet connected things.
url: https://ubuntu.com/security/CVE-2009-2958?format=md
keywords: index, follow
---

# CVE-2009-2958

Publication date 2 September 2009

Last updated 24 July 2024

---

Ubuntu priority

**Medium**

[Why this priority?](https://ubuntu.com/security/cves/about#priority )

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## Description

The tftp\_request function in tftp.c in dnsmasq before 2.50, when
--enable-tftp is used, allows remote attackers to cause a denial of service
(NULL pointer dereference and daemon crash) via a TFTP read (aka RRQ)
request with a malformed blksize option.

[Read the notes from the security team](https://ubuntu.com/security/CVE-2009-2958?format=md#notes)

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| dnsmasq | 9.04 jaunty | Fixed 2.47-3ubuntu0.1 |
| 8.10 intrepid | Fixed 2.45-1ubuntu1.1 |
| 8.04 LTS hardy | Fixed 2.41-2ubuntu2.2 |
| 6.06 LTS dapper | Not affected |

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* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)

## Notes

---

### [jdstrand](https://launchpad.net/~jdstrand)

Dapper does not have tftp code

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-2958)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2009-2958)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2009-2958)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2009-2958)

### Related Ubuntu Security Notices (USN)

+ [USN-827-1](https://usn.ubuntu.com/USN-827-1)
+ Dnsmasq vulnerabilities
+ 1 September 2009

### Other references

* <https://www.cve.org/CVERecord?id=CVE-2009-2958>