ALPINE-CVE-2022-3924
This issue can affect BIND 9 resolvers with `stale-answer-enable yes;` that also make use of the option `stale-answer-client-timeout`, configured with a value greater than zero. If the resolver receives many queries that require recursion, there will be a corresponding increase in the number of clients that are waiting for recursion to complete. If there are sufficient clients already waiting when a new client query is received so that it is necessary to SERVFAIL the longest waiting client (see BIND 9 ARM `recursive-clients` limit and soft quota), then it is possible for a race to occur between providing a stale answer to this older client and sending an early timeout SERVFAIL, which may cause an assertion failure. This issue affects BIND 9 versions 9.16.12 through 9.16.36, 9.18.0 through 9.18.10, 9.19.0 through 9.19.8, and 9.16.12-S1 through 9.16.36-S1.
Risk Scores
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Alpine:v3.23 | bind | 9.9.1, 9.9.2-r0, 9.9.2 |
| Alpine:v3.21 | bind | 9.9.2-r0, 9.9.2, 9.9.2 |
| Alpine:v3.14 | bind | *, 0, 9.10.0-r0 |
| Alpine:v3.17 | bind | 9.10.4-r0, 9.10.4, 9.10.4 |
| Alpine:v3.18 | bind | 9.11.0_p5-r1, 9.11.1_p1-r0, 9.11.1_p2-r0 |
| Alpine:v3.19 | bind | 9.9.3, 0, 9.10.0-r0 |
| Alpine:v3.15 | bind | 9.9.3_p2-r2, 9.9.5-r0, 9.9.4 |
| Alpine:v3.20 | bind | 9.10.4_p2-r0, 9.10.4_p1-r1, 9.10.4_p1-r0 |
| Alpine:v3.22 | bind | 9.9.5-r0, 9.7.2_p2-r0, 9.7.2_p3-r0 |
| Alpine:v3.16 | bind | 0, 9.10.0_p1-r0, 9.10.0_p2-r0 |
Timeline
- Jan 26, 2023 CVE Published
- Dec 3, 2025 CVE Updated
- Apr 30, 2026 Distribution Patch