Debian/unbound: high 7.5
In NLnet Labs Unbound up to and including 1.26.0, a 255 length query name with a large TCP response can lead to a heap buffer overflow during the RRSet canonicalisation routine. This is caused by miss
Action: Upgrade unbound to 1.26.1-0+deb13u1 or later.
Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | 1.26.1-0+deb13u1 | - |
Fixed versions
| 1.26.1-0+deb13u1 |
Sources
- osv: DEBIAN-CVE-2026-81634#Debian:13/unbound
- https://security-tracker.debian.org/tracker/CVE-2026-81634
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