CVE-2026-88816
Publication date 28 September 2026
Last updated 12 October 2026
Ubuntu priority
Description
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;
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| libdbi-perl | 26.04 LTS resolute |
Fixed 1.647-1ubuntu0.26.04.4
|
| 24.04 LTS noble |
Fixed 1.643-4ubuntu0.4
|
|
| 22.04 LTS jammy |
Fixed 1.643-3ubuntu0.4
|
|
| 20.04 LTS focal |
Fixed 1.643-1ubuntu0.1+esm4
|
|
| 18.04 LTS bionic |
Fixed 1.640-1ubuntu0.3+esm4
|
|
| 16.04 LTS xenial |
Fixed 1.634-1ubuntu0.2+esm5
|
|
| 14.04 LTS trusty |
Fixed 1.630-1ubuntu0.1~esm9
|
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CVSS version: CVSS v3.0
Base score
7.5 · High
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
Related Ubuntu Security Notices (USN)
- USN-8912-1
- Perl DBI module vulnerabilities
- 12 October 2026