FKIE_CVE-2026-88816

Vulnerability from fkie_nvd - Published: 2026-09-28 17:17 - Updated: 2026-09-28 19:16
Severity
Summary
DBI versions before 1.654 for Perl incorrectly treat numeric values as strings in FetchHashKeyName. fetchrow_hashref uses the string pointer of the FetchHashKeyName attribute as the key name without stringifying it first. When FetchHashKeyName has been set to an integer (IV) or floating-point (NV) value, that pointer is invalid, so reading the key name triggers a segmentation fault. This can be triggered with the following code: my $dbh = DBI->connect( "dbi:ExampleP:", "", "", { RaiseError => 0, PrintError => 0 } ); $dbh->{FetchHashKeyName} = 42; my $sth = $dbh->prepare("select mode, size, name from ."); $sth->execute; $sth->fetchrow_hashref;
References
9b29abf9-4ab0-4765-b253-1875cd9b441ehttps://github.com/perl5-dbi/dbi/commit/70962570212dc60a5428098cf2a0462ad5945851.patch
9b29abf9-4ab0-4765-b253-1875cd9b441ehttps://github.com/perl5-dbi/dbi/security/advisories/GHSA-f4qx-mr9m-q2hq
9b29abf9-4ab0-4765-b253-1875cd9b441ehttps://metacpan.org/release/HMBRAND/DBI-1.654/changes
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2026/09/28/13
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "collectionURL": "https://cpan.org/modules",
          "defaultStatus": "unaffected",
          "modules": [
            "DBI"
          ],
          "packageName": "DBI",
          "packageURL": "pkg:cpan/DBI",
          "programFiles": [
            "DBI.xs"
          ],
          "programRoutines": [
            {
              "name": "DBD::_::st::fetchrow_hashref"
            }
          ],
          "repo": "https://github.com/perl5-dbi/dbi",
          "versions": [
            {
              "lessThan": "1.654",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "DBI versions before 1.654 for Perl incorrectly treat numeric values as strings in FetchHashKeyName.\n\nfetchrow_hashref uses the string pointer of the FetchHashKeyName attribute as the key name without stringifying it first. When FetchHashKeyName has been set to an integer (IV) or floating-point (NV) value, that pointer is invalid, so reading the key name triggers a segmentation fault.\n\nThis can be triggered with the following code:\n\n   my $dbh = DBI-\u003econnect( \"dbi:ExampleP:\", \"\", \"\",\n       { RaiseError =\u003e 0, PrintError =\u003e 0 } );\n   $dbh-\u003e{FetchHashKeyName} = 42;\n\n   my $sth = $dbh-\u003eprepare(\"select mode, size, name from .\");\n   $sth-\u003eexecute;\n   $sth-\u003efetchrow_hashref;"
    }
  ],
  "id": "CVE-2026-88816",
  "lastModified": "2026-09-28T19:16:50.597",
  "metrics": {},
  "published": "2026-09-28T17:17:52.203",
  "references": [
    {
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "url": "https://github.com/perl5-dbi/dbi/commit/70962570212dc60a5428098cf2a0462ad5945851.patch"
    },
    {
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "url": "https://github.com/perl5-dbi/dbi/security/advisories/GHSA-f4qx-mr9m-q2hq"
    },
    {
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "url": "https://metacpan.org/release/HMBRAND/DBI-1.654/changes"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://www.openwall.com/lists/oss-security/2026/09/28/13"
    }
  ],
  "sourceIdentifier": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-843"
        }
      ],
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "type": "Secondary"
    }
  ]
}



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