| Name | CVE-2025-62408 |
| Description | c-ares is an asynchronous resolver library. Versions 1.32.3 through 1.34.5 terminate a query after maximum attempts when using read_answer() and process_answer(), which can cause a Denial of Service. This issue is fixed in version 1.34.6. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| c-ares (PTS) | bullseye (security), bullseye | 1.17.1-1+deb11u3 | fixed |
| bookworm | 1.18.1-3 | fixed |
| forky, trixie | 1.34.5-1 | vulnerable |
| sid | 1.34.6-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| c-ares | source | bullseye | (not affected) | | | |
| c-ares | source | bookworm | (not affected) | | | |
| c-ares | source | (unstable) | 1.34.6-1 | | | |
Notes
[bookworm] - c-ares <not-affected> (Vulnerable code introduced later)
[bullseye] - c-ares <not-affected> (Vulnerable code introduced later)
https://github.com/c-ares/c-ares/security/advisories/GHSA-jq53-42q6-pqr5
Fixed by: https://github.com/c-ares/c-ares/commit/714bf5675c541bd1e668a8db8e67ce012651e618 (main)
Fixed by: https://github.com/c-ares/c-ares/commit/abf004903696383bf701b77b87f2a7ed7aaa1276 (v1.34.6)