Bug 2542966
| Summary: | CVE-2026-88816 perl-DBI: perl-DBI: Denial of Service via numeric FetchHashKeyName attribute [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: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | rawhide | CC: | jplesnik, mspacek, perl-devel, rhughes, rstrode |
| Target Milestone: | --- | Keywords: | Security, SecurityTracking |
| Target Release: | --- | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | {"flaws": ["245b53b3-bf28-41f4-a33a-2cc84423bc98"]} | ||
| 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: | 2542560 | ||
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 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 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 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. 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. 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. |
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;