CVE-2025-65498 · cross-distro fix matrix

CVE-2025-65498: 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.

Affects 1 Linux release across 1 (distro × package) combinations.

Fix per ecosystem

Each block below is a distro release where CVE-2025-65498 has a known fix. Run the listed command on that distro to remediate.

Debian trixie

Source: Debian Security Tracker

libcoap3→ fixed in4.3.4-1.1+deb13u2urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y libcoap3
```

Are YOU affected by CVE-2025-65498?

5-second check on your actual server. Reads /etc/os-release, uname -r, and the distro's package manager; matches against this same cross-source index live.

curl https://mindsparkstack.com/scan.sh | bash

Form-based quickscan View on NVD

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