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.
References:
https://nvd.nist.gov/vuln/detail/CVE-2025-48945
Signed-off-by: Jiaying Song <jiaying.song.cn@windriver.com>
Signed-off-by: Armin Kuster <akuster808@gmail.com>
