CVE-2026-107373
Publication date 12 October 2026
Last updated 12 October 2026
Ubuntu priority
Description
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.
Why is this CVE low priority?
Local crash in Perl XS code when non-string values are passed through the affected typemap; no remote/default exposure.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| libextutils-typemaps-default-perl | 26.04 LTS resolute |
Needs evaluation
|
| 24.04 LTS noble |
Needs evaluation
|
|
| 22.04 LTS jammy |
Needs evaluation
|
|
| 20.04 LTS focal | Not in release | |
| 18.04 LTS bionic | Not in release | |
| 16.04 LTS xenial | Not in release | |
| 14.04 LTS trusty | Not in release |
References
Other references
- https://www.cve.org/CVERecord?id=CVE-2026-107373
- cpan.org/modules
- github.com/tsee/extutils-typemap-default
- github.com/tsee/extutils-typemap-default/commit/a6b9c298b34ddadc582961403e715d292f82a22d
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1150541
- lists.security.metacpan.org/cve-announce/msg/44245994
- rt.cpan.org/public/bug/display.html?id=94110
- security-tracker.debian.org/tracker/cve-2026-107373