Debian/dnsdist: medium 5.3
An attacker can send crafted DNS over HTTP/3 queries, triggering an exception that prevents some buffer from being freed right away. The buffer will be freed at the end of the QUIC connection, but on
Action: Upgrade dnsdist to 1.9.15-0+deb13u1 or later.
Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | 1.9.15-0+deb13u1 | - |
Fixed versions
| 1.9.15-0+deb13u1 |
Sources
- osv: DEBIAN-CVE-2026-40211#Debian:13/dnsdist
- https://security-tracker.debian.org/tracker/CVE-2026-40211
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