{"id":"AZL-105690","summary":"CVE-2026-19445 affecting package python3 3.12.14-2","details":"A remote, unauthenticated TLS client can make a server crash or call\nthrough a freed pointer if its sni_callback assigns a different context to\nSSLSocket.context (the documented way to select a certificate per server\nname) and nothing else keeps the original ssl.SSLContext alive. Typical\ncases are servers that create an SSLContext per connection or replace it\nwhile connections are open; servers that wrap their listening socket with\nit are not affected.\n\n\nMitigation: keep a reference to every SSLContext that sets sni_callback for\nthe lifetime of the server. TLS clients are not affected.","modified":"2026-10-04T05:34:07Z","published":"2026-09-30T17:16:45Z","upstream":["CVE-2026-19445"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-19445"}],"affected":[{"package":{"name":"python3","ecosystem":"Azure Linux:3","purl":"pkg:rpm/azure-linux/python3"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"3.12.14-2"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-105690.json"}}],"schema_version":"1.9.0"}