{"id":"UBUNTU-CVE-2026-88816","details":"DBI versions before 1.654 for Perl incorrectly treat numeric values as strings in FetchHashKeyName. fetchrow_hashref uses the string pointer of the FetchHashKeyName attribute as the key name without stringifying it first. When FetchHashKeyName has been set to an integer (IV) or floating-point (NV) value, that pointer is invalid, so reading the key name triggers a segmentation fault. This can be triggered with the following code:    my $dbh = DBI-\u003econnect( \"dbi:ExampleP:\", \"\", \"\",        { RaiseError =\u003e 0, PrintError =\u003e 0 } );    $dbh-\u003e{FetchHashKeyName} = 42;    my $sth = $dbh-\u003eprepare(\"select mode, size, name from .\");    $sth-\u003eexecute;    $sth-\u003efetchrow_hashref;","modified":"2026-10-02T12:18:40.580038367Z","published":"2026-09-28T17:17:00Z","upstream":["CVE-2026-88816"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-88816"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-88816"}],"affected":[{"package":{"name":"libdbi-perl","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/libdbi-perl?arch=source&distro=esm-infra-legacy%2Ftrusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.627-1","1.628-1","1.630-1","1.630-1ubuntu0.1~esm1","1.630-1ubuntu0.1~esm4","1.630-1ubuntu0.1~esm5","1.630-1ubuntu0.1~esm6","1.630-1ubuntu0.1~esm8"],"ecosystem_specific":{"binaries":[{"binary_name":"libdbi-perl","binary_version":"1.630-1ubuntu0.1~esm8"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-88816.json"}},{"package":{"name":"libdbi-perl","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/libdbi-perl?arch=source&distro=esm-infra-legacy%2Fxenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.633-1","1.634-1","1.634-1build1","1.634-1ubuntu0.1","1.634-1ubuntu0.2","1.634-1ubuntu0.2+esm1","1.634-1ubuntu0.2+esm2","1.634-1ubuntu0.2+esm4"],"ecosystem_specific":{"binaries":[{"binary_version":"1.634-1ubuntu0.2+esm4","binary_name":"libdbi-perl"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-88816.json"}},{"package":{"name":"libdbi-perl","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/libdbi-perl?arch=source&distro=esm-infra%2Fbionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.637-1","1.639-1","1.640-1","1.640-1ubuntu0.1","1.640-1ubuntu0.2","1.640-1ubuntu0.3","1.640-1ubuntu0.3+esm1","1.640-1ubuntu0.3+esm3"],"ecosystem_specific":{"binaries":[{"binary_version":"1.640-1ubuntu0.3+esm3","binary_name":"libdbi-perl"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-88816.json"}},{"package":{"name":"libdbi-perl","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/libdbi-perl?arch=source&distro=esm-infra%2Ffocal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.642-1","1.642-1build1","1.643-1","1.643-1ubuntu0.1","1.643-1ubuntu0.1+esm1","1.643-1ubuntu0.1+esm3"],"ecosystem_specific":{"binaries":[{"binary_name":"libdbi-perl","binary_version":"1.643-1ubuntu0.1+esm3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-88816.json"}},{"package":{"name":"libdbi-perl","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/libdbi-perl?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.643-3build2","1.643-3build3","1.643-3ubuntu0.1","1.643-3ubuntu0.3"],"ecosystem_specific":{"binaries":[{"binary_name":"libdbi-perl","binary_version":"1.643-3ubuntu0.3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-88816.json"}},{"package":{"name":"libdbi-perl","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/libdbi-perl?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.643-4","1.643-4build1","1.643-4build2","1.643-4build3","1.643-4ubuntu0.1","1.643-4ubuntu0.3"],"ecosystem_specific":{"binaries":[{"binary_version":"1.643-4ubuntu0.3","binary_name":"libdbi-perl"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-88816.json"}},{"package":{"name":"libdbi-perl","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/libdbi-perl?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.647-1","1.647-1build1","1.647-1ubuntu0.26.04.1","1.647-1ubuntu0.26.04.3"],"ecosystem_specific":{"binaries":[{"binary_name":"libdbi-perl","binary_version":"1.647-1ubuntu0.26.04.3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-88816.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}