Servers and applications
GHSA-ph6c-3cvx-mq6v
c-ares can write past a buffer when ares_dup() or ares_save_options() runs while another thread changes the servers
- Severity
- Medium 5.3
- Published
- 20 Oct 2026
- Last changed
- 20 Oct 2026
- Added to UpHeron
- 3 Nov 2026
- Fixed in
- 1.34.9
- Sources
- Project advisories (GitHub)
Affected software
| Software | Affected versions |
|---|---|
c-aresServers and applications · github:c-ares/c-ares |
|
References
- GitHub Advisory Database https://github.com/advisories/GHSA-ph6c-3cvx-mq6v
- github.com https://github.com/c-ares/c-ares/security/advisories/GHSA-ph6c-3cvx-mq6v