Critical
libextutils-typemaps-default-perl — security advisory
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.
- Products
- libextutils-typemaps-default-perl
- Affected versions
- 1.05-2, 1.05-2.1, 1.05-5
- Fixed versions
- Not specified
- CVEs
- CVE-2026-107373
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 17:58 UTC · Revision 1
Source evidence
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.
osv:UBUNTU-CVE-2026-107373
libextutils-typemaps-default-perl
Fixed versions: Not specified
libextutils-typemaps-default-perl
Fixed versions: Not specified
libextutils-typemaps-default-perl
Fixed versions: Not specified
libextutils-typemaps-default-perl
Fixed versions: Not specified
libextutils-typemaps-default-perl
Fixed versions: Not specified
libextutils-typemaps-default-perl
Fixed versions: Not specified
libextutils-typemaps-default-perl
Fixed versions: Not specified
Complete source record
{
"id": "83d9357e21d37dd6423684528eb1af18e322c1345448c7932b236a32b51dd6f7",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-107373",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2026-107373",
"summary": "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.",
"evidence": "osv:UBUNTU-CVE-2026-107373",
"products": [
{
"name": {
"value": "libextutils-typemaps-default-perl",
"evidence": "/affected/0/package/name"
},
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"affected_versions": [
{
"value": "1.05-2",
"evidence": "/affected/0/versions"
}
]
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{
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{
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{
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{
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{
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],
"severity": "critical",
"structured": {
"id": "UBUNTU-CVE-2026-107373",
"aliases": [
"UBUNTU-CVE-2026-107373"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "low"
}
],
"affected": [
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},
"versions": [
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],
"database_specific": {
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},
"ecosystem_specific": {
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],
"priority_reason": "Local crash in Perl XS code when non-string values are passed through the affected typemap; no remote/default exposure."
}
},
{
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"package": {
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"ecosystem": "Ubuntu:18.04:LTS"
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"versions": [
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"database_specific": {
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},
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],
"database_specific": {
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{
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{
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},
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}
},
{
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"ecosystem": "Ubuntu:26.04:LTS"
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],
"modified": "2026-10-22T10:30:04.369906463Z",
"provider": "osv",
"upstream": [
"CVE-2026-107373"
],
"references": [
"https://ubuntu.com/security/CVE-2026-107373",
"https://www.cve.org/CVERecord?id=CVE-2026-107373",
"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1150541"
]
},
"related_cves": [
{
"value": "CVE-2026-107373",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 405363,
"published_at": "2026-10-10T13:17:00+00:00"
}