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7.5
BIND named may crash when DNS64 and serve-stale are on
published 4 days ago
Summary
The BIND DNS server can stop working if both the DNS64 and serve‑stale options are enabled at the same time. This crash could interrupt name resolution for users and downstream services. Disable one of the features or upgrade to a patched version of BIND to prevent the problem.
What to do
- Update cleanstart bind to version 9.18.24-r0.
Affected software
| Ecosystem | Vendor | Product | Affected versions |
|---|---|---|---|
| CleanStart | cleanstart | bind |
< 9.18.24-r0 Fix: upgrade to 9.18.24-r0
|
Original advisory text
bad interaction between DNS64 and serve-stale may cause `named` to crash with an assertion failure during recursive resolution, when both of these features are enabled
Security vulnerability affects the bind package. A bad interaction between DNS64 and serve-stale may cause `named` to crash with an assertion failure during recursive resolution, when both of these features are enabled.
Internet-facing
14 days
Internal
60 days
- Not known to be exploited
- Can be exploited automatically (estimated)
- Gives an attacker partial control (estimated)
Timeline
Published31 Oct 2026
Updated31 Oct 2026
First seen31 Oct 2026
Sources
CLEANSTART-2025-AE08215 · OSV
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