Debian/libcoap3: medium 4.3
Null pointer dereference in coap_dtls_info_callback() in OISM libcoap 4.3.5 allows remote attackers to cause a denial of service via a DTLS handshake where SSL_get_app_data() returns NULL.
Action: Upgrade libcoap3 to 4.3.4-1.1+deb13u2 or later.
Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | 4.3.4-1.1+deb13u2 | - |
Fixed versions
| 4.3.4-1.1+deb13u2 |
Sources
- osv: DEBIAN-CVE-2025-65501#Debian:13/libcoap3
- https://security-tracker.debian.org/tracker/CVE-2025-65501
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