OESA-2026-4253 (CVE-2026-88815)

Vulnerability from osv_openeuler – Published: 2026-10-16 11:58 – Updated: 2026-10-16 11:58 – Source website
VLAI
Summary
perl-DBI security update
Details

The DBI is the standard database interface module for Perl. It defines a set of methods, variables and conventions that provide a consistent database interface independent of the actual database being used. It is important to remember that the DBI is just an interface. The DBI is a layer of "glue" between an application and one or more database driver modules. It is the driver modules which do most of the real work. The DBI provides a standard interface and framework for the drivers to operate within.

Security Fix(es):

DBI versions before 1.654 for Perl incorrectly treat numeric values as strings in sql_type_cast_svpv.

When casting to SQL_NUMERIC, sql_type_cast_svpv passes the string pointer and length of the SV to grok_number without stringifying it first. An integer (IV) or floating-point (NV) value has no valid string pointer, so grok_number reads from an invalid address, triggering a segmentation fault.

This is reachable in Perl using the sql_type_cast function:

my $num = 42; DBI::sql_type_cast( $num, DBI::SQL_NUMERIC, 0 );(CVE-2026-88815)

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;(CVE-2026-88816)

Severity
6.2 (Medium)
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "perl-DBI-1.643-12.oe2403sp3.aarch64.rpm",
          "perl-DBI-debuginfo-1.643-12.oe2403sp3.aarch64.rpm",
          "perl-DBI-debugsource-1.643-12.oe2403sp3.aarch64.rpm"
        ],
        "noarch": [
          "perl-DBI-help-1.643-12.oe2403sp3.noarch.rpm"
        ],
        "src": [
          "perl-DBI-1.643-12.oe2403sp3.src.rpm"
        ],
        "x86_64": [
          "perl-DBI-1.643-12.oe2403sp3.x86_64.rpm",
          "perl-DBI-debuginfo-1.643-12.oe2403sp3.x86_64.rpm",
          "perl-DBI-debugsource-1.643-12.oe2403sp3.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:24.03-LTS-SP3",
        "name": "perl-DBI",
        "purl": "pkg:rpm/openEuler/perl-DBI\u0026distro=openEuler-24.03-LTS-SP3"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.643-12.oe2403sp3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "Medium"
  },
  "details": "The DBI is the standard database interface module for Perl. It defines a set of methods, variables and conventions that provide a consistent database interface independent of the actual database being used. It is important to remember that the DBI is just an interface. The DBI is a layer of \u0026amp;quot;glue\u0026amp;quot; between an application and one or more database driver modules. It is the driver modules which do most of the real work. The DBI provides a standard interface and framework for the drivers to operate within.\r\n\r\nSecurity Fix(es):\n\nDBI versions before 1.654 for Perl incorrectly treat numeric values as strings in sql_type_cast_svpv.\n\nWhen casting to SQL_NUMERIC, sql_type_cast_svpv passes the string pointer and length of the SV to grok_number without stringifying it first. An integer (IV) or floating-point (NV) value has no valid string pointer, so grok_number reads from an invalid address, triggering a segmentation fault.\n\nThis is reachable in Perl using the sql_type_cast function:\n\n  my $num = 42;\n  DBI::sql_type_cast( $num, DBI::SQL_NUMERIC, 0 );(CVE-2026-88815)\n\nDBI 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-\u0026gt;connect( \u0026quot;dbi:ExampleP:\u0026quot;, \u0026quot;\u0026quot;, \u0026quot;\u0026quot;,\n       { RaiseError =\u0026gt; 0, PrintError =\u0026gt; 0 } );\n   $dbh-\u0026gt;{FetchHashKeyName} = 42;\n\n   my $sth = $dbh-\u0026gt;prepare(\u0026quot;select mode, size, name from .\u0026quot;);\n   $sth-\u0026gt;execute;\n   $sth-\u0026gt;fetchrow_hashref;(CVE-2026-88816)",
  "id": "OESA-2026-4253",
  "modified": "2026-10-16T11:58:37Z",
  "published": "2026-10-16T11:58:37Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-4253"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-88815"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-88816"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "perl-DBI security update",
  "upstream": [
    "CVE-2026-88815",
    "CVE-2026-88816"
  ]
}



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