libcrypt-openssl-x509-perl: Crypt::OpenSSL::X509 versions before 2.1.3 for Perl allow denial of service via NULL pointer dereference
CVE-2026-58101 is fixed in libcrypt-openssl-x509-perl on 1 platform by DEBIAN-CVE-2026-58101 (version 2.1.3-1), released July 18, 2026. It is not reported as exploited. Patch Radar priority: High.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| libcrypt-openssl-x509-perl · Debian 14 | 2.1.3-1 | DEBIAN-CVE-2026-58101 | Jul 18, 2026 |
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