UBUNTU-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.
UBUNTU-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:UBUNTU-CVE-2026-73194
libdbi-perl
Source reference: /affected/0/package/name
- Affected versions
- 1.627-1
Source reference:
/affected/0/versions1.628-1Source reference:
/affected/0/versions1.630-1Source reference:
/affected/0/versions1.630-1ubuntu0.1~esm1Source reference:
/affected/0/versions1.630-1ubuntu0.1~esm4Source reference:
/affected/0/versions1.630-1ubuntu0.1~esm5Source reference:
/affected/0/versions1.630-1ubuntu0.1~esm6Source reference:
/affected/0/versions - Fixed versions
- 1.630-1ubuntu0.1~esm8
Source reference:
/affected/0/ranges - Prerequisites
- Not stated in this record
libdbi-perl
Source reference: /affected/1/package/name
- Affected versions
- 1.633-1
Source reference:
/affected/1/versions1.634-1Source reference:
/affected/1/versions1.634-1build1Source reference:
/affected/1/versions1.634-1ubuntu0.1Source reference:
/affected/1/versions1.634-1ubuntu0.2Source reference:
/affected/1/versions1.634-1ubuntu0.2+esm1Source reference:
/affected/1/versions1.634-1ubuntu0.2+esm2Source reference:
/affected/1/versions - Fixed versions
- 1.634-1ubuntu0.2+esm4
Source reference:
/affected/1/ranges - Prerequisites
- Not stated in this record
libdbi-perl
Source reference: /affected/2/package/name
- Affected versions
- 1.637-1
Source reference:
/affected/2/versions1.639-1Source reference:
/affected/2/versions1.640-1Source reference:
/affected/2/versions1.640-1ubuntu0.1Source reference:
/affected/2/versions1.640-1ubuntu0.2Source reference:
/affected/2/versions1.640-1ubuntu0.3Source reference:
/affected/2/versions1.640-1ubuntu0.3+esm1Source reference:
/affected/2/versions - Fixed versions
- 1.640-1ubuntu0.3+esm3
Source reference:
/affected/2/ranges - Prerequisites
- Not stated in this record
libdbi-perl
Source reference: /affected/3/package/name
- Affected versions
- 1.642-1
Source reference:
/affected/3/versions1.642-1build1Source reference:
/affected/3/versions1.643-1Source reference:
/affected/3/versions1.643-1ubuntu0.1Source reference:
/affected/3/versions1.643-1ubuntu0.1+esm1Source reference:
/affected/3/versions - Fixed versions
- 1.643-1ubuntu0.1+esm3
Source reference:
/affected/3/ranges - Prerequisites
- Not stated in this record
libdbi-perl
Source reference: /affected/4/package/name
- Affected versions
- 1.643-3build2
Source reference:
/affected/4/versions1.643-3build3Source reference:
/affected/4/versions1.643-3ubuntu0.1Source reference:
/affected/4/versions - Fixed versions
- 1.643-3ubuntu0.3
Source reference:
/affected/4/ranges - Prerequisites
- Not stated in this record
libdbi-perl
Source reference: /affected/5/package/name
- Affected versions
- 1.643-4
Source reference:
/affected/5/versions1.643-4build1Source reference:
/affected/5/versions1.643-4build2Source reference:
/affected/5/versions1.643-4build3Source reference:
/affected/5/versions1.643-4ubuntu0.1Source reference:
/affected/5/versions - Fixed versions
- 1.643-4ubuntu0.3
Source reference:
/affected/5/ranges - Prerequisites
- Not stated in this record
libdbi-perl
Source reference: /affected/6/package/name
- Affected versions
- 1.647-1
Source reference:
/affected/6/versions1.647-1build1Source reference:
/affected/6/versions1.647-1ubuntu0.26.04.1Source reference:
/affected/6/versions - Fixed versions
- 1.647-1ubuntu0.26.04.3
Source reference:
/affected/6/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": "1.630-1ubuntu0.1~esm8"
}
]
}
],
"package": {
"name": "libdbi-perl",
"purl": "pkg:deb/ubuntu/libdbi-perl?arch=source&distro=esm-infra-legacy%2Ftrusty",
"ecosystem": "Ubuntu:Pro:14.04:LTS"
},
"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"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-73194.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libdbi-perl",
"binary_version": "1.630-1ubuntu0.1~esm8"
}
],
"availability": "Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.634-1ubuntu0.2+esm4"
}
]
}
],
"package": {
"name": "libdbi-perl",
"purl": "pkg:deb/ubuntu/libdbi-perl?arch=source&distro=esm-infra-legacy%2Fxenial",
"ecosystem": "Ubuntu:Pro:16.04:LTS"
},
"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"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-73194.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libdbi-perl",
"binary_version": "1.634-1ubuntu0.2+esm4"
}
],
"availability": "Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.640-1ubuntu0.3+esm3"
}
]
}
],
"package": {
"name": "libdbi-perl",
"purl": "pkg:deb/ubuntu/libdbi-perl?arch=source&distro=esm-infra%2Fbionic",
"ecosystem": "Ubuntu:Pro:18.04:LTS"
},
"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"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-73194.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libdbi-perl",
"binary_version": "1.640-1ubuntu0.3+esm3"
}
],
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.643-1ubuntu0.1+esm3"
}
]
}
],
"package": {
"name": "libdbi-perl",
"purl": "pkg:deb/ubuntu/libdbi-perl?arch=source&distro=esm-infra%2Ffocal",
"ecosystem": "Ubuntu:Pro:20.04:LTS"
},
"versions": [
"1.642-1",
"1.642-1build1",
"1.643-1",
"1.643-1ubuntu0.1",
"1.643-1ubuntu0.1+esm1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-73194.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libdbi-perl",
"binary_version": "1.643-1ubuntu0.1+esm3"
}
],
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.643-3ubuntu0.3"
}
]
}
],
"package": {
"name": "libdbi-perl",
"purl": "pkg:deb/ubuntu/libdbi-perl?arch=source&distro=jammy",
"ecosystem": "Ubuntu:22.04:LTS"
},
"versions": [
"1.643-3build2",
"1.643-3build3",
"1.643-3ubuntu0.1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-73194.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libdbi-perl",
"binary_version": "1.643-3ubuntu0.3"
}
],
"availability": "No subscription required"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.643-4ubuntu0.3"
}
]
}
],
"package": {
"name": "libdbi-perl",
"purl": "pkg:deb/ubuntu/libdbi-perl?arch=source&distro=noble",
"ecosystem": "Ubuntu:24.04:LTS"
},
"versions": [
"1.643-4",
"1.643-4build1",
"1.643-4build2",
"1.643-4build3",
"1.643-4ubuntu0.1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-73194.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libdbi-perl",
"binary_version": "1.643-4ubuntu0.3"
}
],
"availability": "No subscription required"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.647-1ubuntu0.26.04.3"
}
]
}
],
"package": {
"name": "libdbi-perl",
"purl": "pkg:deb/ubuntu/libdbi-perl?arch=source&distro=resolute",
"ecosystem": "Ubuntu:26.04:LTS"
},
"versions": [
"1.647-1",
"1.647-1build1",
"1.647-1ubuntu0.26.04.1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-73194.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libdbi-perl",
"binary_version": "1.647-1ubuntu0.26.04.3"
}
],
"availability": "No subscription required"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #37324 · Revision 1
- Added to Heist Feed
- Publisher date