CPANSA-DBI-2026-108518: DBI vulnerability
| Publisher | giterlizzi | Document category | csaf_security_advisory |
|---|---|---|---|
| Initial release date | 2026-10-20T00:00:00 | Engine | CSAF Perl Toolkit 0.26 |
| Current release date | 2026-10-20T00:00:00 | Build Date | |
| Current version | 1 | Status | final |
| CVSS v3.1 Base Score | 2.9 | Severity | Low |
| Original language | Language | en | |
| Also referred to | |||
Vulnerability Description
DBI versions before 1.656 for Perl crash via type confusion in dbi_profile when a database handle is destroyed under a Profile Path with an {attr} element.
An {attr} element names a database handle attribute, which dbi_profile reads from the handle's inner hash. It expects the inner handle as a reference and dereferences it, but a handle that is being destroyed hands back the inner hash itself, so the dereference yields the hash's bucket array. A type check on that pointer usually fails and the call goes unprofiled. When the memory it addresses passes the check, the attribute lookup dereferences a NULL or invalid pointer and the process dies on SIGSEGV.
The Path is set by the application, by the Profile handle attribute, or by the DBI_PROFILE environment variable, so `DBI_PROFILE={ImplementorClass}` can crash an unmodified program.
Vulnerabilities
CVE-2026-108518
Vulnerability DescriptionDBI versions before 1.656 for Perl crash via type confusion in dbi_profile when a database handle is destroyed under a Profile Path with an {attr} element.
An {attr} element names a database handle attribute, which dbi_profile reads from the handle's inner hash. It expects the inner handle as a reference and dereferences it, but a handle that is being destroyed hands back the inner hash itself, so the dereference yields the hash's bucket array. A type check on that pointer usually fails and the call goes unprofiled. When the memory it addresses passes the check, the attribute lookup dereferences a NULL or invalid pointer and the process dies on SIGSEGV.
The Path is set by the application, by the Profile handle attribute, or by the DBI_PROFILE environment variable, so `DBI_PROFILE={ImplementorClass}` can crash an unmodified program.
| Weakness | CWE-843 : Access of Resource Using Incompatible Type ('Type Confusion') |
|---|
Product status
Known affected
| Product | Score | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| DBI less than 1.656 |
|
Fixed
- DBI greater than or equal 1.656
giterlizzi
Namespace: https://github.com/giterlizzi/
gdt@cpan.org
References
- CPANSA-DBI-2026-108518 JSON self
https://raw.githubusercontent.com/giterlizzi/perl-CPANSA-CSAF/develop/csaf/white/2026/cpansa-dbi-2026-108518.json - https://github.com/perl5-dbi/dbi/commit/c2ff4df575d7af625bb4d0d1ef7539f90b22d8b2.patch external
https://github.com/perl5-dbi/dbi/commit/c2ff4df575d7af625bb4d0d1ef7539f90b22d8b2.patch - https://github.com/perl5-dbi/dbi/security/advisories/GHSA-7393-6f8r-fhh3 external
https://github.com/perl5-dbi/dbi/security/advisories/GHSA-7393-6f8r-fhh3 - https://metacpan.org/release/HMBRAND/DBI-1.656/changes external
https://metacpan.org/release/HMBRAND/DBI-1.656/changes - http://www.openwall.com/lists/oss-security/2026/10/20/37 external
http://www.openwall.com/lists/oss-security/2026/10/20/37 - CVE-2026-108518 (NVD) external
https://nvd.nist.gov/vuln/detail/CVE-2026-108518
Revision history
| Version | Date of the revision | Summary of the revision |
|---|---|---|
| 1 | Tue Oct 20 00:00:00 2026 | First release |
Sharing rules
TLP:WHITE
For the TLP version see: https://www.first.org/tlp/