Bug 2542966 - CVE-2026-88816 perl-DBI: perl-DBI: Denial of Service via numeric FetchHashKeyName attribute [fedora-all]
Summary: CVE-2026-88816 perl-DBI: perl-DBI: Denial of Service via numeric FetchHashKey...
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Fedora
Classification: Fedora
Component: perl-DBI
Version: rawhide
Hardware: Unspecified
OS: Unspecified
medium
medium
Target Milestone: ---
Assignee: Jitka Plesnikova
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard: {"flaws": ["245b53b3-bf28-41f4-a33a-2...
Depends On:
Blocks: CVE-2026-88816
TreeView+ depends on / blocked
 
Reported: 2026-09-29 06:44 UTC by Vladimir Vasilev
Modified: 2026-10-09 01:40 UTC (History)
5 users (show)

Fixed In Version: perl-DBI-1.655-1.fc45 perl-DBI-1.655-1.fc44 perl-DBI-1.655-1.fc43
Clone Of:
Environment:
Last Closed: 2026-10-06 00:17:21 UTC
Type: ---
Embargoed:


Attachments (Terms of Use)

Description Vladimir Vasilev 2026-09-29 06:44:23 UTC
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

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;

Comment 1 Fedora Update System 2026-09-29 09:03:22 UTC
FEDORA-2026-2e78b6b58e (perl-DBI-1.654-1.fc45) has been submitted as an update to Fedora 45.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-2e78b6b58e

Comment 2 Fedora Update System 2026-09-29 09:03:30 UTC
FEDORA-2026-dc85e47244 (perl-DBI-1.654-1.fc43) has been submitted as an update to Fedora 43.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-dc85e47244

Comment 3 Fedora Update System 2026-09-29 09:03:36 UTC
FEDORA-2026-e39b376e66 (perl-DBI-1.654-1.fc44) has been submitted as an update to Fedora 44.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-e39b376e66

Comment 4 Fedora Update System 2026-09-30 01:53:06 UTC
FEDORA-2026-2e78b6b58e has been pushed to the Fedora 45 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-2e78b6b58e`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-2e78b6b58e

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 5 Fedora Update System 2026-09-30 02:13:24 UTC
FEDORA-2026-dc85e47244 has been pushed to the Fedora 43 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-dc85e47244`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-dc85e47244

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 6 Fedora Update System 2026-09-30 02:26:08 UTC
FEDORA-2026-e39b376e66 has been pushed to the Fedora 44 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-e39b376e66`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-e39b376e66

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 7 Fedora Update System 2026-10-01 01:47:50 UTC
FEDORA-2026-272f19f521 has been pushed to the Fedora 43 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-272f19f521`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-272f19f521

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 8 Fedora Update System 2026-10-01 02:01:30 UTC
FEDORA-2026-6d3a15e9c3 has been pushed to the Fedora 44 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-6d3a15e9c3`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-6d3a15e9c3

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 9 Fedora Update System 2026-10-01 02:19:45 UTC
FEDORA-2026-5fb5fb6508 has been pushed to the Fedora 45 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-5fb5fb6508`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-5fb5fb6508

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 10 Fedora Update System 2026-10-06 00:17:21 UTC
FEDORA-2026-5fb5fb6508 (perl-DBI-1.655-1.fc45) has been pushed to the Fedora 45 stable repository.
If problem still persists, please make note of it in this bug report.

Comment 11 Fedora Update System 2026-10-09 01:07:02 UTC
FEDORA-2026-6d3a15e9c3 (perl-DBI-1.655-1.fc44) has been pushed to the Fedora 44 stable repository.
If problem still persists, please make note of it in this bug report.

Comment 12 Fedora Update System 2026-10-09 01:40:48 UTC
FEDORA-2026-272f19f521 (perl-DBI-1.655-1.fc43) has been pushed to the Fedora 43 stable repository.
If problem still persists, please make note of it in this bug report.


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