Bug 2548973 (CVE-2013-10076)

Summary: CVE-2013-10076 perl-extutils-typemaps-default: perl-extutils-typemaps-default: Denial of Service via memory exhaustion from empty list
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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A flaw was found in perl-extutils-typemaps-default. An integer underflow occurs when processing an empty list in vector typemaps, causing the application to calculate an excessively large buffer size. An attacker can exploit this vulnerability by supplying empty list input, leading to memory exhaustion and a Denial of Service (DoS).
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Description OSIDB Bzimport 2026-10-10 13:01:59 UTC 
ExtUtils::Typemaps::STL::Vector versions before 1.05 for Perl allocate a 32 GiB array on an empty list.

The OUTPUT typemaps call av_extend( av, len-1 ). On an empty list, this undeflows, and av_extend will allocate an array with 2^32 slots, leading to memory exhaustion.