Bug 1433278 (CVE-2017-6949)

Summary: CVE-2017-6949 chicken: Unchecked size argument in malloc() in CHICKEN Scheme
Product: [Other] Security Response Reporter: Andrej Nemec <anemec>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED UPSTREAM QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedCC: relrod
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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Last Closed: 2019-06-08 03:09:08 UTC Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 1433279, 1433280    
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Description Andrej Nemec 2017-03-17 09:57:01 UTC 
An issue was discovered in CHICKEN Scheme through. When using a nonstandard CHICKEN-specific extension to allocate an SRFI-4 vector in unmanaged memory, the vector size would be used in unsanitised form as an argument to malloc(). With an unexpected size, the impact may have been a segfault or buffer overflow.

References:

http://seclists.org/oss-sec/2017/q1/627
http://lists.gnu.org/archive/html/chicken-announce/2017-03/msg00000.html
Comment 1 Andrej Nemec 2017-03-17 09:57:38 UTC 
Created chicken tracking bugs for this issue:

Affects: epel-all [bug 1433279]
Affects: fedora-all [bug 1433280]
Comment 2 Product Security DevOps Team 2019-06-08 03:09:08 UTC 
This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.