Bug 1361981 (CVE-2016-5255)

Summary: CVE-2016-5255 Mozilla: Crash in incremental garbage collection in JavaScript (MFSA 2016-71)
Product: [Other] Security Response Reporter: Huzaifa S. Sidhpurwala <huzaifas>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED NOTABUG QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: security-response-team
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Hardware: All   
OS: Linux   
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Last Closed: 2016-08-03 04:59:11 UTC Type: ---
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Bug Blocks: 1360577    

Description Huzaifa S. Sidhpurwala 2016-08-01 06:28:31 UTC 
Security researcher Jukka Jylänki reported a use-after-free in JavaScript caused by how objects and pointers are handled during incremental garbage collection in some circumstances working with object groups. When triggered, this causes a potential exploitable crash but is mitigated by the difficulties in controlling the crash and its output. 


External Reference:

https://www.mozilla.org/security/announce/2016/mfsa2016-71.html


Acknowledgements:

Name: the Mozilla project
Upstream: Jukka Jylänki

Statement:

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