Bug 1252289 (CVE-2015-4484)

Summary: CVE-2015-4484 Mozilla: Crash when using shared memory in JavaScript (MFSA 2015-87)
Product: [Other] Security Response Reporter: Huzaifa S. Sidhpurwala <huzaifas>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED ERRATA QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: jhorak, security-response-team, stransky
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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Fixed In Version: Doc Type: Bug Fix
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Last Closed: 2015-08-25 03:54:31 UTC Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Blocks: 1248359, 1251515    

Description Huzaifa S. Sidhpurwala 2015-08-11 06:27:02 UTC 
Security researcher Jukka Jylänki reported a crash that occurs because JavaScript, when using shared memory, does not properly gate access to Atomicscode> or SharedArrayBuffer views in some contexts. This leads to a non-exploitable crash. 


External Reference:

https://www.mozilla.org/security/announce/2015/mfsa2015-87.html


Acknowledgements:

Red Hat would like to thank the Mozilla project for reporting this issue. Upstream acknowledges Jukka Jylänki as the original reporter.
Comment 1 errata-xmlrpc 2015-08-11 19:48:21 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 5
  Red Hat Enterprise Linux 6
  Red Hat Enterprise Linux 7

Via RHSA-2015:1586 https://rhn.redhat.com/errata/RHSA-2015-1586.html