This page tracks the Ubuntu fix status. The vulnerability itself is described on the main CVE page.
View CVE-2026-107373 →
UBUNTU-CVE-2026-107373
ExtUtils::Typemaps::STL::String versions before 1.06 for Perl T_STD_STRING typemap may read the SV length before stringifying the argument. The typema...
Original description
The description as published by the source.
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.
Source: OSV.dev (Open Source Vulnerabilities) OSV
Affected packages
Ubuntu:16.04:LTS
libextutils-typemaps-default-perl
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:18.04:LTS
libextutils-typemaps-default-perl
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:20.04:LTS
libextutils-typemaps-default-perl
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:22.04:LTS
libextutils-typemaps-default-perl
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:24.04:LTS
libextutils-typemaps-default-perl
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:26.10
libextutils-typemaps-default-perl
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:26.04:LTS
libextutils-typemaps-default-perl
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
References
- report ubuntu.com
- report cve.org
- report cpan.org/modules
- report github.com/tsee/extutils-typemap-default
- report github.com/tsee/extutils-typemap-default/commit/a6b9c298b34ddadc582961403e715d292f82a22d
- report bugs.debian.org
- report lists.security.metacpan.org/cve-announce/msg/44245994
- report rt.cpan.org/public/bug/display.html?id=94110
- report security-tracker.debian.org/tracker/cve-2026-107373