{"id":"UBUNTU-CVE-2026-107794","details":"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.","modified":"2026-10-12T14:20:38.697763453Z","published":"2026-10-12T00:00:00Z","upstream":["CVE-2026-107794"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-107794"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-107794"},{"type":"REPORT","url":"cpan.org/modules"},{"type":"REPORT","url":"github.com/tsee/extutils-typemap-default"},{"type":"REPORT","url":"github.com/tsee/extutils-typemap-default/commit/10f45bf0d00d3140499755c2ad49f8bf435851ac"},{"type":"REPORT","url":"github.com/tsee/extutils-typemap-default/commit/3e6602d8a9db424e5842e001554bf268797e4de1"},{"type":"REPORT","url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1150541"},{"type":"REPORT","url":"lists.security.metacpan.org/cve-announce/msg/44246012"},{"type":"REPORT","url":"rt.cpan.org/public/bug/display.html?id=91213"},{"type":"REPORT","url":"security-tracker.debian.org/tracker/cve-2026-107794"}],"affected":[{"package":{"name":"libextutils-typemaps-default-perl","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/libextutils-typemaps-default-perl?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.05-2"],"ecosystem_specific":{"binaries":[{"binary_version":"1.05-2","binary_name":"libextutils-typemaps-default-perl"}],"priority_reason":"Denial of service via memory exhaustion when processing an empty list in Perl XS typemaps; requires untrusted input to a Perl application using this module."},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-107794.json"}},{"package":{"name":"libextutils-typemaps-default-perl","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/libextutils-typemaps-default-perl?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.05-2"],"ecosystem_specific":{"binaries":[{"binary_name":"libextutils-typemaps-default-perl","binary_version":"1.05-2"}],"priority_reason":"Denial of service via memory exhaustion when processing an empty list in Perl XS typemaps; requires untrusted input to a Perl application using this module."},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-107794.json"}},{"package":{"name":"libextutils-typemaps-default-perl","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/libextutils-typemaps-default-perl?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.05-2"],"ecosystem_specific":{"binaries":[{"binary_name":"libextutils-typemaps-default-perl","binary_version":"1.05-2"}],"priority_reason":"Denial of service via memory exhaustion when processing an empty list in Perl XS typemaps; requires untrusted input to a Perl application using this module."},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-107794.json"}},{"package":{"name":"libextutils-typemaps-default-perl","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/libextutils-typemaps-default-perl?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.05-2.1"],"ecosystem_specific":{"binaries":[{"binary_version":"1.05-2.1","binary_name":"libextutils-typemaps-default-perl"}],"priority_reason":"Denial of service via memory exhaustion when processing an empty list in Perl XS typemaps; requires untrusted input to a Perl application using this module."},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-107794.json"}},{"package":{"name":"libextutils-typemaps-default-perl","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/libextutils-typemaps-default-perl?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.05-5"],"ecosystem_specific":{"binaries":[{"binary_version":"1.05-5","binary_name":"libextutils-typemaps-default-perl"}],"priority_reason":"Denial of service via memory exhaustion when processing an empty list in Perl XS typemaps; requires untrusted input to a Perl application using this module."},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-107794.json"}},{"package":{"name":"libextutils-typemaps-default-perl","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/libextutils-typemaps-default-perl?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.05-5"],"ecosystem_specific":{"binaries":[{"binary_name":"libextutils-typemaps-default-perl","binary_version":"1.05-5"}],"priority_reason":"Denial of service via memory exhaustion when processing an empty list in Perl XS typemaps; requires untrusted input to a Perl application using this module."},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-107794.json"}}],"schema_version":"1.9.0","severity":[{"type":"Ubuntu","score":"medium"}]}