Bug 2416771 (CVE-2025-65493)

Summary: CVE-2025-65493 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 DTLS/TLS connection that triggers BIO_get_data() to return NULL.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 2416889, 2416891, 2416893    
Bug Blocks:    

Description OSIDB Bzimport 2025-11-24 15:02:15 UTC
NULL pointer dereference in src/coap_openssl.c in OISM libcoap 4.3.5 allows remote attackers to cause a denial of service via a crafted DTLS/TLS connection that triggers BIO_get_data() to return NULL.