libextutils-typemaps-default-perl: ExtUtils::Typemaps::STL::List versions before 1.07 for Perl allocate a 32 GiB array on an empty list
CVE-2026-107794 is fixed in 2 products on 1 platform, first by DEBIAN-CVE-2026-107794, released October 13, 2026. It is not reported as exploited. Patch Radar priority: High.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| libextutils-typemaps-default-perl · Debian 14 | 1.07-1 | DEBIAN-CVE-2026-107794 | Oct 13, 2026 |
| perl-ExtUtils-Typemaps-Default · Fedora 43 | 1.07-1.fc43 | FEDORA-2026-6186A0239F | Nov 7, 2026 |
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