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DEBIAN-CVE-2026-73194

Type: advisorySource: OSV1 source record

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.

Announced Source revision 1
Original source ↗

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/versions

1.643-4+deb12u1

Source 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/versions

1.647-1+deb13u1

Source reference: /affected/1/versions

1.648-1

Source reference: /affected/1/versions

1.649-1

Source reference: /affected/1/versions

1.650-1

Source reference: /affected/1/versions

1.651-1

Source reference: /affected/1/versions

1.652-1

Source 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/versions

1.648-1

Source reference: /affected/2/versions

1.649-1

Source reference: /affected/2/versions

1.650-1

Source reference: /affected/2/versions

1.651-1

Source 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
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Publisher date
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