{"id":"UBUNTU-CVE-2026-14457","details":"Issue summary: In a server or client configuration with RFC7250 Raw Public Keys (RPKs) enabled, and only the private key (with no associated certificate) configured locally, a NULL pointer dereference may occur when the remote peer solicits raw public keys and also sends the typically omitted \"signature_algorithms_cert\" TLS extension. Impact summary: The impact is limited to a possible Denial of Service as a result of an application abort, no data disclosure or remote command execution are possible. CWE: CWE-476: NULL Pointer Dereference Description: While a passing comment in sample code in the documentation suggests that key-only RPK configurations are supported, the best-practice RPK configuration is to always configure a corresponding certificate (possibly self-signed or signed by any convenient CA). When the private key is configured along with a matching certificate, the \"signature_algorithms_cert\" extension is handled reliably even without the fix, and peer clients or servers that don't support raw public keys may be able to complete a TLS connection by pinning or verifying the corresponding certificate or its public key. Deployments that prefer to configure just a private key with no certificate need to upgrade to an updated release as noted below. FIPS impact: no No FIPS modules are affected by this issue, as the SSL protocol implementation is outside the OpenSSL FIPS module boundary.","modified":"2026-09-16T14:01:35.933404353Z","published":"2026-08-25T00:00:00Z","related":["USN-8678-1"],"upstream":["CVE-2026-14457"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-14457"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-14457"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8678-1"}],"affected":[{"package":{"name":"nodejs","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/nodejs?arch=source&distro=esm-apps%2Fxenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.10.25~dfsg2-2ubuntu1","4.2.2~dfsg-1","4.2.3~dfsg-1","4.2.4~dfsg-1ubuntu1","4.2.4~dfsg-2","4.2.6~dfsg-1ubuntu1","4.2.6~dfsg-1ubuntu4","4.2.6~dfsg-1ubuntu4.1","4.2.6~dfsg-1ubuntu4.2","4.2.6~dfsg-1ubuntu4.2+esm1","4.2.6~dfsg-1ubuntu4.2+esm2","4.2.6~dfsg-1ubuntu4.2+esm3"],"ecosystem_specific":{"binaries":[{"binary_name":"nodejs","binary_version":"4.2.6~dfsg-1ubuntu4.2+esm3"},{"binary_name":"nodejs-legacy","binary_version":"4.2.6~dfsg-1ubuntu4.2+esm3"}],"priority_reason":"OpenSSL 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