libextutils-typemaps-default-perl: ExtUtils::Typemaps::STL::String versions before 1.06 for Perl T_STD_STRING typemap may read the SV length before stri...
CVE-2026-107373 is fixed in 2 products on 1 platform, first by DEBIAN-CVE-2026-107373, released October 13, 2026. It is not reported as exploited. Patch Radar priority: Urgent.
ExtUtils::Typemaps::STL::String versions before 1.06 for Perl T_STD_STRING typemap may read the SV length before stringifying the argument. The typemap uses $var = std::string( SvPV_nolen($arg), SvCUR($arg) ) However, evaluation order for C++ arguments is not specified, and some compilers may produce code that evalutes SvCUR($arg) first. When $arg is not a string (for example, an interger, number or a reference) then SvCUR will return an invalid value, and the program may abort or segfault.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| libextutils-typemaps-default-perl · Debian 14 | 1.07-1 | DEBIAN-CVE-2026-107373 | Oct 13, 2026 |
| perl-ExtUtils-Typemaps-Default · Fedora 43 | 1.07-1.fc43 | FEDORA-2026-6186A0239F | Nov 7, 2026 |
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