{"id":"AZL-67074","summary":"CVE-2025-48945 affecting package python3-pycares 4.5.0-1","details":"pycares is a Python module which provides an interface to c-ares. c-ares is a C library that performs DNS requests and name resolutions asynchronously. Prior to version 4.9.0, pycares is vulnerable to a use-after-free condition that occurs when a Channel object is garbage collected while DNS queries are still pending. This results in a fatal Python error and interpreter crash. The vulnerability has been fixed in pycares 4.9.0 by implementing a safe channel destruction mechanism.","modified":"2026-04-21T04:38:03.616245Z","published":"2025-06-20T20:15:33Z","upstream":["CVE-2025-48945"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-48945"}],"affected":[{"package":{"name":"python3-pycares","ecosystem":"Azure Linux:3","purl":"pkg:rpm/azure-linux/python3-pycares"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"4.5.0-1"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-67074.json"}}],"schema_version":"1.7.5"}