UBUNTU-CVE-2025-48945
- Source
- https://ubuntu.com/security/CVE-2025-48945
- Import Source
- https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-48945.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2025-48945
- Upstream
- Published
- 2025-06-20T20:15:00Z
- Modified
- 2025-07-14T04:37:28Z
- Severity
-
- 8.2 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator
- Ubuntu - medium
- Summary
- [none]
- 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.
- References
Affected packages
Ubuntu:Pro:18.04:LTS / pycares
Package
- Name
- pycares
- Purl
- pkg:deb/ubuntu/pycares@2.1.1-2build2?arch=source&distro=esm-apps/bionic
Ubuntu:Pro:20.04:LTS / pycares
Package
- Name
- pycares
- Purl
- pkg:deb/ubuntu/pycares@3.1.1-1build1?arch=source&distro=esm-apps/focal
Ubuntu:22.04:LTS / pycares
Package
- Name
- pycares
- Purl
- pkg:deb/ubuntu/pycares@4.1.2-2build1?arch=source&distro=jammy
Ubuntu:24.04:LTS / pycares
Package
- Name
- pycares
- Purl
- pkg:deb/ubuntu/pycares@4.4.0-1build2?arch=source&distro=noble