Bug 2416826 (CVE-2025-65498) - CVE-2025-65498 libcoap: NULL pointer dereference during DTLS operations
Summary: CVE-2025-65498 libcoap: NULL pointer dereference during DTLS operations
Keywords:
Status: NEW
Alias: CVE-2025-65498
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2417725 2417726
Blocks:
TreeView+ depends on / blocked
 
Reported: 2025-11-24 19:01 UTC by OSIDB Bzimport
Modified: 2025-11-28 16:18 UTC (History)
0 users

Fixed In Version:
Clone Of:
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Last Closed:
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Description OSIDB Bzimport 2025-11-24 19:01:55 UTC 
NULL pointer dereference in coap_dtls_generate_cookie() in src/coap_openssl.c in OISM libcoap 4.3.5 allows remote attackers to cause a denial of service via a crafted DTLS handshake that triggers SSL_get_SSL_CTX() to return NULL.
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