{"id":"AZL-96704","summary":"CVE-2026-73194 affecting package perl-DBI 1.651-1","details":"DBI versions before 1.652 for Perl allow a heap out-of-bounds write via an unvalidated numeric placeholder that sets the binder counter in preparse.\n\npreparse reserves seven output bytes per input byte, the width of the longest ':p99999' expansion. The ':N' branch parses the number with `atoi(src)` and assigns it to the binder counter with no range check, so a statement containing ':2147483648' leaves the counter negative (-2147483648 with glibc, where atoi wraps). Each following '?' then expands through `sprintf(start, \":p%d\", idx++)` to ':p-2147483648', 14 bytes with the terminating NUL where the buffer budgets 7. The placeholder limit added in 1.650 tests the counter against 99,999, which a negative counter passes.\n\nAny caller that preparses an untrusted statement into ':pN' style placeholders gets a heap out-of-bounds write that grows with the number of '?' marks following the poisoned placeholder. The '?' and '%s' return styles compare the parsed number against the expected sequence and error out, and are unaffected.","modified":"2026-08-31T05:26:27Z","published":"2026-08-15T13:17:48Z","upstream":["CVE-2026-73194"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-73194"}],"affected":[{"package":{"name":"perl-DBI","ecosystem":"Azure Linux:3","purl":"pkg:rpm/azure-linux/perl-DBI"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"1.651-1"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-96704.json"}}],"schema_version":"1.9.0"}