Bug 2416769 (CVE-2025-65494)

Summary: CVE-2025-65494 libcoap: libcoap denial of service
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A null pointer dereference flaw has been discovered in libcoap. Remote attackers may be able to cause a denial of service via a crafted X.509 certificate that causes sk_GENERAL_NAME_value() to return NULL.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 2416890, 2416894, 2416896    
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Description OSIDB Bzimport 2025-11-24 15:02:12 UTC 
NULL pointer dereference in get_san_or_cn_from_cert() in src/coap_openssl.c in OISM libcoap 4.3.5 allows remote attackers to cause a denial of service via a crafted X.509 certificate that causes sk_GENERAL_NAME_value() to return NULL.