DEBIAN-CVE-2026-73194
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. preparse 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. Any 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.
DEBIAN-CVE-2026-73194
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:DEBIAN-CVE-2026-73194
libdbi-perl
Source reference: /affected/0/package/name
- Affected versions
- 1.643-4
Source reference:
/affected/0/versions1.643-4+deb12u1Source reference:
/affected/0/versions - Fixed versions
- 1.643-4+deb12u2
Source reference:
/affected/0/ranges - Prerequisites
- Not stated in this record
libdbi-perl
Source reference: /affected/1/package/name
- Affected versions
- 1.647-1
Source reference:
/affected/1/versions1.647-1+deb13u1Source reference:
/affected/1/versions1.648-1Source reference:
/affected/1/versions1.649-1Source reference:
/affected/1/versions1.650-1Source reference:
/affected/1/versions1.651-1Source reference:
/affected/1/versions1.652-1Source reference:
/affected/1/versions - Fixed versions
- 1.652-2~deb13u1
Source reference:
/affected/1/ranges - Prerequisites
- Not stated in this record
libdbi-perl
Source reference: /affected/2/package/name
- Affected versions
- 1.647-1
Source reference:
/affected/2/versions1.648-1Source reference:
/affected/2/versions1.649-1Source reference:
/affected/2/versions1.650-1Source reference:
/affected/2/versions1.651-1Source reference:
/affected/2/versions - Fixed versions
- 1.652-1
Source reference:
/affected/2/ranges - Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.643-4+deb12u2"
}
]
}
],
"package": {
"name": "libdbi-perl",
"purl": "pkg:deb/debian/libdbi-perl?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"1.643-4",
"1.643-4+deb12u1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-73194.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.652-2~deb13u1"
}
]
}
],
"package": {
"name": "libdbi-perl",
"purl": "pkg:deb/debian/libdbi-perl?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"1.647-1",
"1.647-1+deb13u1",
"1.648-1",
"1.649-1",
"1.650-1",
"1.651-1",
"1.652-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-73194.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.652-1"
}
]
}
],
"package": {
"name": "libdbi-perl",
"purl": "pkg:deb/debian/libdbi-perl?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"1.647-1",
"1.648-1",
"1.649-1",
"1.650-1",
"1.651-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-73194.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #56320 · Revision 1
- Added to Heist Feed
- Publisher date