Bug 1340113 (CVE-2016-5043)

Summary: CVE-2016-5043 libdwarf: Out-of-bounds read in dwarf_dealloc()
Product: [Other] Security Response Reporter: Andrej Nemec <anemec>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED WONTFIX QA Contact:
Severity: low Docs Contact:
Priority: low    
Version: unspecifiedCC: fche, orion
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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Last Closed: 2016-05-26 13:42:38 UTC Type: ---
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Description Andrej Nemec 2016-05-26 13:20:26 UTC 
A vulnerability was found in libdwarf. A function dwarf_dealloc() did not check the Dwarf_Ptr space argument before using it which leads to an out-of-bounds read.

References:

http://seclists.org/oss-sec/2016/q2/393

External references:

https://www.prevanders.net/dwarfbug.html

Upstream fix:

https://sourceforge.net/p/libdwarf/code/ci/98a3da1e8237fe0d45b67ef77f3fa5ed9ff0215f
Comment 1 Tom Hughes 2016-05-26 13:21:02 UTC 
Already fixed in Fedora.