Description

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.

INFO

Published Date :

2025-06-20T19:14:27.403Z

Last Modified :

2025-06-20T20:06:23.612Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2025-48945 vulnerability.

No data.

REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2025-48945.

URL Resource
https://github.com/aio-libs/aiodns/commit/f259a6e3650555157af53ac2b39f2ff545321d55 cve-icon cve-icon
https://github.com/aio-libs/aiodns/releases/tag/v3.5.0 cve-icon cve-icon
https://github.com/saghul/pycares cve-icon
https://github.com/saghul/pycares/commit/ebfd7d71eb8e74bc1057a361ea79a5906db510d4 cve-icon cve-icon cve-icon
https://github.com/saghul/pycares/releases/tag/v4.9.0 cve-icon cve-icon
https://github.com/saghul/pycares/security/advisories/GHSA-5qpg-rh4j-qp35 cve-icon cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2025-48945 cve-icon
https://www.cve.org/CVERecord?id=CVE-2025-48945 cve-icon
Login to claim this CVE

CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Attack Requirements
Privileges Required
User Interaction
VS Confidentiality
VS Integrity
VS Availability
SS Confidentiality
SS Integrity
SS Availability
Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact