Bug 2499852 (CVE-2026-58101) - CVE-2026-58101 perl-Crypt-OpenSSL-X509: Crypt::OpenSSL::X509: Denial of Service due to NULL pointer dereference
Summary: CVE-2026-58101 perl-Crypt-OpenSSL-X509: Crypt::OpenSSL::X509: Denial of Servi...
Keywords:
Status: NEW
Alias: CVE-2026-58101
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
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URL:
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Depends On: 2512099 2512100
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-07-13 23:01 UTC by OSIDB Bzimport
Modified: 2026-08-06 15:08 UTC (History)
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Description OSIDB Bzimport 2026-07-13 23:01:58 UTC 
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.
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