======================================================================== CVE-2026-108518 CPAN Security Group ========================================================================
CVE ID: CVE-2026-108518 Distribution: DBI Versions: before 1.656 MetaCPAN: https://metacpan.org/dist/DBI VCS Repo: https://github.com/perl5-dbi/dbi 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 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. Problem types ------------- - CWE-843 Access of Resource Using Incompatible Type ('Type Confusion') Solutions --------- Upgrade to DBI 1.656 or later. References ---------- https://github.com/perl5-dbi/dbi/security/advisories/GHSA-7393-6f8r-fhh3 https://github.com/perl5-dbi/dbi/commit/c2ff4df575d7af625bb4d0d1ef7539f90b22d8b2.patch https://metacpan.org/release/HMBRAND/DBI-1.656/changes Credits ------- Henrik Teichmann, finder
