---
title: "CVE-2006-5540\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-2006-5540?format=md
keywords: index, follow
---

# CVE-2006-5540

Publication date 26 October 2006

Last updated 17 July 2025

---

Ubuntu priority

**Medium**

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

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## Description

backend/parser/analyze.c in PostgreSQL 8.1.x before 8.1.5 allows remote
authenticated users to cause a denial of service (daemon crash) via certain
aggregate functions in an UPDATE statement, which are not properly handled
during a "MIN/MAX index optimization."

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| postgresql-7.4 | 7.04 feisty | Not in release |
| 6.10 edgy | Not affected |
| 6.06 LTS dapper | Not affected |
| postgresql-8.0 | 7.04 feisty | Not in release |
| 6.10 edgy | Not in release |
| 6.06 LTS dapper | Not affected |
| postgresql-8.1 | 7.04 feisty | Fixed 8.1.8-1ubuntu3 |
| 6.10 edgy | Fixed 8.1.9-0ubuntu0.6.10 |
| 6.06 LTS dapper | Fixed 8.1.9-0ubuntu0.6.06 |

---

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

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-5540)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2006-5540)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2006-5540)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2006-5540)

### Related Ubuntu Security Notices (USN)

+ [USN-369-2](https://usn.ubuntu.com/USN-369-2)
+ postgresql-8.1 vulnerabilities
+ 1 November 2006

### Other references

* <https://www.cve.org/CVERecord?id=CVE-2006-5540>