---
title: "CVE-2015-6832\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-2015-6832?format=md
keywords: index, follow
---

# CVE-2015-6832

Publication date 27 August 2015

Last updated 25 August 2025

---

Ubuntu priority

**Medium**

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

## Cvss 3 Severity Score

**7.3 · High**

[Score breakdown](https://ubuntu.com/security/CVE-2015-6832?format=md#impact-score)

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## Description

Use-after-free vulnerability in the SPL unserialize implementation in
ext/spl/spl\_array.c in PHP before 5.4.44, 5.5.x before 5.5.28, and 5.6.x
before 5.6.12 allows remote attackers to execute arbitrary code via crafted
serialized data that triggers misuse of an array field.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| php5 | 15.04 vivid | Fixed 5.6.4+dfsg-4ubuntu6.3 |
| 14.04 LTS trusty | Fixed 5.5.9+dfsg-1ubuntu4.13 |
| 12.04 LTS precise | Fixed 5.3.10-1ubuntu3.20 |

---

* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)
* [Patch details](https://ubuntu.com/security/CVE-2015-6832?format=md#patch-details)

### Patch details

For informational purposes only. We recommend not to cherry-pick updates. [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)

| Package | Patch details |
| --- | --- |
| php5 | * Upstream:   <http://git.php.net/?p=php-src.git;a=commit;h=b7fa67742cd8d2b0ca0c0273b157f6ffee9ad6e2> |

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

7.3 · High

* Base metrics

  | Parameter | Value |
  | --- | --- |
  | Attack vector | Network |
  | Attack complexity | Low |
  | Privileges required | None |
  | User interaction | None |
  | Scope | Unchanged |
  | Confidentiality impact | Low |
  | Integrity impact | Low |
  | Availability impact | Low |
* Scores

  | Parameter | Value |
  | --- | --- |
  | Base score | 7.3 · High |
  | Exploitability score | - |
  | Impact score | - |

**Vector:** CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-6832)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2015-6832)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2015-6832)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2015-6832)

### Related Ubuntu Security Notices (USN)

+ [USN-2758-1](https://usn.ubuntu.com/USN-2758-1)
+ PHP vulnerabilities
+ 30 September 2015

### Other references

* <http://seclists.org/oss-sec/2015/q3/523>
* <http://www.openwall.com/lists/oss-security/2015/08/19/3>
* <https://www.cve.org/CVERecord?id=CVE-2015-6832>