This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page. View CVE-2026-58101 →

DEBIAN-CVE-2026-58101

Crypt::OpenSSL::X509 versions before 2.1.3 for Perl allow denial of service via NULL pointer dereference. X509V3_EXT_d2i(ext) returns NULL when an ex...

Original description

The description as published by the source.

Crypt::OpenSSL::X509 versions before 2.1.3 for Perl allow denial of service via NULL pointer dereference. X509V3_EXT_d2i(ext) returns NULL when an extension's DER value fails to parse. basicC, ia5string, and auth_att dereference its result without a NULL check. keyid_data also dereferences akid->keyid, which is NULL for an empty AKI SEQUENCE (DER 30 00) even when the parse succeeds. A caller invoking an affected helper on an extension from an untrusted certificate triggers a SIGSEGV that crashes the Perl process.

Source: OSV.dev (Open Source Vulnerabilities) OSV

Affected packages

Debian:12 libcrypt-openssl-x509-perl

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Debian:13 libcrypt-openssl-x509-perl

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Debian:14 libcrypt-openssl-x509-perl

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.1.3-1"}]}]

References

advisory security-tracker.debian.org