Hi,

The following vulnerability was published for libdbi-perl.

CVE-2026-73194[0]:
| 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.


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2026-73194
https://www.cve.org/CVERecord?id=CVE-2026-73194
[1] https://lists.security.metacpan.org/cve-announce/msg/42707363/

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore

We believe that the bug you reported is fixed in the latest version of
libdbi-perl, which is due to be installed in the Debian FTP archive.

A summary of the changes between this version and the previous one is
attached.

Thank you for reporting the bug, which will now be closed.  If you
have further comments please address them to 1144471@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
gregor herrmann <gregoa@debian.org> (supplier of updated libdbi-perl package)

(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing ftpmaster@ftp-master.debian.org)
Format: 1.8
Date: Sat, 15 Aug 2026 17:13:20 +0200
Source: libdbi-perl
Architecture: source
Version: 1.652-1
Distribution: unstable
Urgency: medium
Maintainer: Debian Perl Group <pkg-perl-maintainers@lists.alioth.debian.org>
Changed-By: gregor herrmann <gregoa@debian.org>
Closes: 1144470 1144471
Changes:
 libdbi-perl (1.652-1) unstable; urgency=medium
 .
   * Import upstream version 1.652.
     + Limit statements to 292 Mb in preparse (CVE-2026-73193)
       (Closes: #1144470)
     + Force placeholder limit on :# and :p# too (CVE-2026-73194)
       (Closes: #1144471)
   * Install new SECURITY.md file.
   * Refresh t__40profile.t__NTP.patch (offset).
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Files:
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Git-Tag-Info: tag=f7c427d0b058284f51bf3866709ca4c443188e0c fp=d1e1316e93a760a8104d85fabb3a68018649aa06
Git-Tag-Tagger: gregor herrmann <gregoa@debian.org>
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