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{"bugzilla": {"description": "pycares: pycares Channel Use-After-Free", "id": "2373046", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2373046"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-416", "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.", "A flaw was found in pycares. A use-after-free condition arises when a Channel object is garbage collected while associated DNS queries remain pending, leading to a fatal Python error and interpreter crash. This vulnerability allows a local attacker to trigger the crash by initiating DNS queries and then manipulating the object lifetime. This condition causes a denial of service resulting from interpreter termination."], "mitigation": {"lang": "en:us", "value": "To mitigate this flaw avoid creating Channel objects per-request."}, "name": "CVE-2025-48945", "package_state": [{"cpe": "cpe:/a:redhat:ansible_automation_platform:2", "fix_state": "Not affected", "package_name": "automation-controller", "product_name": "Red Hat Ansible Automation Platform 2"}, {"cpe": "cpe:/a:redhat:ansible_automation_platform:2", "fix_state": "Not affected", "package_name": "python3.11-pycares", "product_name": "Red Hat Ansible Automation Platform 2"}, {"cpe": "cpe:/a:redhat:ansible_automation_platform:2", "fix_state": "Not affected", "package_name": "python3x-pycares", "product_name": "Red Hat Ansible Automation Platform 2"}, {"cpe": "cpe:/a:redhat:ansible_automation_platform:2", "fix_state": "Not affected", "package_name": "python-pycares", "product_name": "Red Hat Ansible Automation Platform 2"}, {"cpe": "cpe:/a:redhat:satellite:6", "fix_state": "Not affected", "package_name": "python-pycares", "product_name": "Red Hat Satellite 6"}, {"cpe": "cpe:/a:redhat:satellite:6", "fix_state": "Not affected", "package_name": "satellite-capsule:el8/python-pycares", "product_name": "Red Hat Satellite 6"}, {"cpe": "cpe:/a:redhat:satellite:6", "fix_state": "Not affected", "package_name": "satellite:el8/python-pycares", "product_name": "Red Hat Satellite 6"}, {"cpe": "cpe:/a:redhat:rhui:4::el8", "fix_state": "Not affected", "package_name": "python-pycares", "product_name": "Red Hat Update Infrastructure 4 for Cloud Providers"}], "public_date": "2025-06-16T16:09:47Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-48945\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-48945\nhttps://github.com/saghul/pycares\nhttps://github.com/saghul/pycares/commit/ebfd7d71eb8e74bc1057a361ea79a5906db510d4\nhttps://github.com/saghul/pycares/security/advisories/GHSA-5qpg-rh4j-qp35"], "threat_severity": "Moderate"}