Bug 2542965

Summary:	CVE-2026-88815 perl-DBI: perl-DBI: Denial of Service via invalid memory read during numeric type casting [fedora-all]
Product:	[Fedora] Fedora	Reporter:	Vladimir Vasilev <vvasilev>
Component:	perl-DBI	Assignee:	Jitka Plesnikova <jplesnik>
Status:	ON_QA ---	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	high	Docs Contact:
Priority:	high
Version:	rawhide	CC:	jplesnik, mspacek, perl-devel, rhughes, rstrode
Target Milestone:	---	Keywords:	Security, SecurityTracking
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:	{"flaws": ["6c6274dc-3669-4090-913d-a6ba1c140670"]}
Fixed In Version:		Doc Type:	---
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:		Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	2542559

Description Vladimir Vasilev 2026-09-29 06:44:11 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 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 );

Comment 1 Fedora Update System 2026-09-29 09:03:18 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 09:03:25 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 09:03:32 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 01:53:04 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 02:13:21 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 02:26:06 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.