---
title: "CVE-2016-1636\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-2016-1636?format=md
keywords: index, follow
---

# CVE-2016-1636

Publication date 5 March 2016

Last updated 25 August 2025

---

Ubuntu priority

**Medium**

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

## Cvss 3 Severity Score

**9.8 · Critical**

[Score breakdown](https://ubuntu.com/security/CVE-2016-1636?format=md#impact-score)

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## Description

The PendingScript::notifyFinished function in
WebKit/Source/core/dom/PendingScript.cpp in Google Chrome before
49.0.2623.75 relies on memory-cache information about integrity-check
occurrences instead of integrity-check successes, which allows remote
attackers to bypass the Subresource Integrity (aka SRI) protection
mechanism by triggering two loads of the same resource.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| chromium-browser | 15.10 wily | Fixed 49.0.2623.87-0ubuntu0.15.10.1.1222 |
| 14.04 LTS trusty | Fixed 49.0.2623.87-0ubuntu0.14.04.1.1112 |
| 12.04 LTS precise | Ignored |
| oxide-qt | 15.10 wily | Fixed 1.13.6-0ubuntu0.15.10.1 |
| 14.04 LTS trusty | Fixed 1.13.6-0ubuntu0.14.04.1 |
| 12.04 LTS precise | Not in release |

---

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

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

9.8 · Critical

* Base metrics

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

  | Parameter | Value |
  | --- | --- |
  | Base score | 9.8 · Critical |
  | Exploitability score | - |
  | Impact score | - |

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

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-1636)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2016-1636)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2016-1636)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2016-1636)

### Related Ubuntu Security Notices (USN)

+ [USN-2920-1](https://usn.ubuntu.com/USN-2920-1)
+ Oxide vulnerabilities
+ 10 March 2016

### Other references

* <http://googlechromereleases.blogspot.ca/2016/03/stable-channel-update.html>
* <https://www.cve.org/CVERecord?id=CVE-2016-1636>