Bug 1315571 (CVE-2016-1956) - CVE-2016-1956 Mozilla: Linux video memory DOS with Intel drivers (MFSA 2016-19)
Summary: CVE-2016-1956 Mozilla: Linux video memory DOS with Intel drivers (MFSA 2016-19)
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2016-1956
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks: 1313724
TreeView+ depends on / blocked
 
Reported: 2016-03-08 06:04 UTC by Huzaifa S. Sidhpurwala
Modified: 2019-09-29 13:45 UTC (History)
1 user (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2016-03-28 05:22:53 UTC


Attachments (Terms of Use)

Description Huzaifa S. Sidhpurwala 2016-03-08 06:04:45 UTC
Security researcher Ucha Gobejishvili reported a denial of service (DOS) attack when doing certain WebGL operations in a canvas requiring an unusually large amount buffer to be allocated from video memory. This resulted memory resource exhaustion with some Intel video cards, requiring the computer to be rebooted to return functionality. This was resolved by putting in additional checks on the amount of memory to be allocated during graphics processing.

This issue was limited to a subset of Intel drivers on Linux. Other operating systems were not affected.



External Reference:

https://www.mozilla.org/security/announce/2016/mfsa2016-19.html


Acknowledgements:

Name: the Mozilla project
Upstream: Ucha Gobejishvili

Statement:

This issue does not affect the version of firefox and thunderbird as shipped with Red Hat Enterprise Linux 5, 6 and 7.


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