Bug 1315571 - (CVE-2016-1956) CVE-2016-1956 Mozilla: Linux video memory DOS with Intel drivers (MFSA 2016-19)
CVE-2016-1956 Mozilla: Linux video memory DOS with Intel drivers (MFSA 2016-19)
Status: CLOSED NOTABUG
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
medium Severity medium
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Assigned To: Red Hat Product Security
impact=moderate,public=20160308,repor...
: Security
Depends On:
Blocks: 1313724
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Reported: 2016-03-08 01:04 EST by Huzaifa S. Sidhpurwala
Modified: 2016-03-28 01:22 EDT (History)
1 user (show)

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Doc Type: Bug Fix
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Last Closed: 2016-03-28 01:22:53 EDT
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Description Huzaifa S. Sidhpurwala 2016-03-08 01:04:45 EST
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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