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.
Note that a similar issue was fixed in ExtUtils::Typemaps::STL::Vector version 1.05.
Analysis
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Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
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Vendor Solution
Upgrade to ExtUtils::Typemaps::Default version 1.07 or later. Rebuild any modules that use ExtUtils::Typemaps::Default as part of their build process.
Tracking
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Sat, 10 Oct 2026 13:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | ExtUtils::Typemaps::STL::List versions before 1.07 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. Note that a similar issue was fixed in ExtUtils::Typemaps::STL::Vector version 1.05. | |
| Title | ExtUtils::Typemaps::STL::List versions before 1.07 for Perl allocate a 32 GiB array on an empty list | |
| Weaknesses | CWE-191 | |
| References |
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Subscriptions
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MITRE
Status: PUBLISHED
Assigner: CPANSec
Published:
Updated: 2026-10-10T12:45:19.991Z
Reserved: 2026-10-08T21:16:53.596Z
Link: CVE-2026-107794
Vulnrichment
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NVD
Status : Received
Published: 2026-10-10T13:17:31.357
Modified: 2026-10-10T13:17:31.357
Link: CVE-2026-107794
Redhat
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OpenCVE Enrichment
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CWE-191
Integer Underflow (Wrap or Wraparound)