CVE catalog
CVE-2022-3924
bind9: CVE-2022-3924
- Severity
- High · CVSS 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 16.11% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | bind9 | sid | 1:9.20.30-1 | fixed |
| Debian | bind9 | forky | 1:9.20.30-1 | fixed |
| Debian | bind9 | trixie | 1:9.20.26-1~deb13u1 | fixed |
| Debian | bind9 | trixie-security | 1:9.20.30-1~deb13u1 | fixed |
| Debian | bind9 | bookworm | 1:9.18.49-1~deb12u1 | fixed |
| Debian | bind9 | bookworm-security | 1:9.18.49-1~deb12u3 | fixed |
| Ubuntu | bind9 | 22.04 | 1:9.16.15-1ubuntu1 | vulnerable |
| Ubuntu | bind9 | 22.04 | 1:9.16.15-1ubuntu2 | vulnerable |
| Ubuntu | bind9 | 22.04 | 1:9.16.15-1ubuntu3 | vulnerable |
| Ubuntu | bind9 | 22.04 | 1:9.18.0-2ubuntu1 | vulnerable |
| Ubuntu | bind9 | 22.04 | 1:9.18.0-2ubuntu2 | vulnerable |
| Ubuntu | bind9 | 22.04 | 1:9.18.0-2ubuntu3 | vulnerable |
| Ubuntu | bind9 | 22.04 | 1:9.18.1-1ubuntu1 | vulnerable |
| Ubuntu | bind9 | 22.04 | 1:9.18.1-1ubuntu1.1 | vulnerable |
| Ubuntu | bind9 | 22.04 | 1:9.18.1-1ubuntu1.2 | vulnerable |
| Ubuntu | bind9 | 22.04 | 1:9.18.1-1ubuntu1.3 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | bind9 | source | sid | 1:9.18.11-1 | not yet assigned | Not reported | Not reported |
| Debian | bind9 | source | forky | 1:9.18.11-1 | not yet assigned | Not reported | Not reported |
| Debian | bind9 | source | trixie | 1:9.18.11-1 | not yet assigned | Not reported | Not reported |
| Debian | bind9 | source | bookworm | 1:9.18.11-1 | not yet assigned | Not reported | Not reported |
| Ubuntu | bind9 | deb | 22.04 | 1:9.18.1-1ubuntu1.3 | Not reported | UBUNTU-CVE-2022-3924 | Not reported |
OpenFactory catalog packages
Matching against OpenFactory catalog package versions is in progress.
[Debian 12 (Bookworm)]
- [bind9]Unknown
Details (6)
1:9.18.49-1~deb12u1· amd64 · bookwormFixed · Fixed:
1:9.18.11-1dsa · bind9 · debian · bookworm
1:9.18.49-1~deb12u1· arm64 · bookwormFixed · Fixed:
1:9.18.11-1dsa · bind9 · debian · bookworm
1:9.20.23-1~deb13u1~bpo12+1· amd64 · bookworm-backportsFixed · Fixed:
1:9.18.11-1dsa · bind9 · debian · bookworm
1:9.20.23-1~deb13u1~bpo12+1· arm64 · bookworm-backportsFixed · Fixed:
1:9.18.11-1dsa · bind9 · debian · bookworm
1:9.18.49-1~deb12u2· amd64 · bookworm-securityFixed · Fixed:
1:9.18.11-1dsa · bind9 · debian · bookworm
1:9.18.49-1~deb12u2· arm64 · bookworm-securityFixed · Fixed:
1:9.18.11-1dsa · bind9 · debian · bookworm
- [bind9-dev]Unknown
Source package: [bind9]
Details (6)
1:9.18.49-1~deb12u1· amd64 · bookwormFixed · Fixed:
1:9.18.11-1dsa · bind9 · debian · bookworm
1:9.18.49-1~deb12u1· arm64 · bookwormFixed · Fixed:
1:9.18.11-1dsa · bind9 · debian · bookworm
1:9.20.23-1~deb13u1~bpo12+1· amd64 · bookworm-backportsFixed · Fixed:
1:9.18.11-1dsa · bind9 · debian · bookworm
1:9.20.23-1~deb13u1~bpo12+1· arm64 · bookworm-backportsFixed · Fixed:
1:9.18.11-1dsa · bind9 · debian · bookworm
1:9.18.49-1~deb12u2· amd64 · bookworm-securityFixed · Fixed:
1:9.18.11-1dsa · bind9 · debian · bookworm
1:9.18.49-1~deb12u2· arm64 · bookworm-securityFixed · Fixed:
1:9.18.11-1dsa · bind9 · debian · bookworm
- [bind9-dnsutils]Unknown
Source package: [bind9]
Details (6)
1:9.18.49-1~deb12u1· amd64 · bookwormFixed · Fixed:
1:9.18.11-1dsa · bind9 · debian · bookworm
1:9.18.49-1~deb12u1· arm64 · bookwormFixed · Fixed:
1:9.18.11-1dsa · bind9 · debian · bookworm
1:9.20.23-1~deb13u1~bpo12+1· amd64 · bookworm-backportsFixed · Fixed:
1:9.18.11-1dsa · bind9 · debian · bookworm
1:9.20.23-1~deb13u1~bpo12+1· arm64 · bookworm-backportsFixed · Fixed:
1:9.18.11-1dsa · bind9 · debian · bookworm
1:9.18.49-1~deb12u2· amd64 · bookworm-securityFixed · Fixed:
1:9.18.11-1dsa · bind9 · debian · bookworm
1:9.18.49-1~deb12u2· arm64 · bookworm-securityFixed · Fixed:
1:9.18.11-1dsa · bind9 · debian · bookworm
- [bind9-doc]Unknown
Source package: [bind9]
Details (6)
1:9.18.49-1~deb12u1· all · bookwormFixed · Fixed:
1:9.18.11-1dsa · bind9 · debian · bookworm
1:9.18.49-1~deb12u1· all · bookwormFixed · Fixed:
1:9.18.11-1dsa · bind9 · debian · bookworm
1:9.20.23-1~deb13u1~bpo12+1· all · bookworm-backportsFixed · Fixed:
1:9.18.11-1dsa · bind9 · debian · bookworm
1:9.20.23-1~deb13u1~bpo12+1· all · bookworm-backportsFixed · Fixed:
1:9.18.11-1dsa · bind9 · debian · bookworm
1:9.18.49-1~deb12u2· all · bookworm-securityFixed · Fixed:
1:9.18.11-1dsa · bind9 · debian · bookworm
1:9.18.49-1~deb12u2· all · bookworm-securityFixed · Fixed:
1:9.18.11-1dsa · bind9 · debian · bookworm
- [bind9-host]Unknown
Source package: [bind9]
Details (6)
1:9.18.49-1~deb12u1· amd64 · bookwormFixed · Fixed:
1:9.18.11-1dsa · bind9 · debian · bookworm
1:9.18.49-1~deb12u1· arm64 · bookwormFixed · Fixed:
1:9.18.11-1dsa · bind9 · debian · bookworm
1:9.20.23-1~deb13u1~bpo12+1· amd64 · bookworm-backportsFixed · Fixed:
1:9.18.11-1dsa · bind9 · debian · bookworm
1:9.20.23-1~deb13u1~bpo12+1· arm64 · bookworm-backportsFixed · Fixed:
1:9.18.11-1dsa · bind9 · debian · bookworm
1:9.18.49-1~deb12u2· amd64 · bookworm-securityFixed · Fixed:
1:9.18.11-1dsa · bind9 · debian · bookworm
1:9.18.49-1~deb12u2· arm64 · bookworm-securityFixed · Fixed:
1:9.18.11-1dsa · bind9 · debian · bookworm
- [bind9-libs]Unknown
Source package: [bind9]
Details (6)
1:9.18.49-1~deb12u1· amd64 · bookwormFixed · Fixed:
1:9.18.11-1dsa · bind9 · debian · bookworm
1:9.18.49-1~deb12u1· arm64 · bookwormFixed · Fixed:
1:9.18.11-1dsa · bind9 · debian · bookworm
1:9.20.23-1~deb13u1~bpo12+1· amd64 · bookworm-backportsFixed · Fixed:
1:9.18.11-1dsa · bind9 · debian · bookworm
1:9.20.23-1~deb13u1~bpo12+1· arm64 · bookworm-backportsFixed · Fixed:
1:9.18.11-1dsa · bind9 · debian · bookworm
1:9.18.49-1~deb12u2· amd64 · bookworm-securityFixed · Fixed:
1:9.18.11-1dsa · bind9 · debian · bookworm
1:9.18.49-1~deb12u2· arm64 · bookworm-securityFixed · Fixed:
1:9.18.11-1dsa · bind9 · debian · bookworm
- [bind9-utils]Unknown
Source package: [bind9]
Details (6)
1:9.18.49-1~deb12u1· amd64 · bookwormFixed · Fixed:
1:9.18.11-1dsa · bind9 · debian · bookworm
1:9.18.49-1~deb12u1· arm64 · bookwormFixed · Fixed:
1:9.18.11-1dsa · bind9 · debian · bookworm
1:9.20.23-1~deb13u1~bpo12+1· amd64 · bookworm-backportsFixed · Fixed:
1:9.18.11-1dsa · bind9 · debian · bookworm
1:9.20.23-1~deb13u1~bpo12+1· arm64 · bookworm-backportsFixed · Fixed:
1:9.18.11-1dsa · bind9 · debian · bookworm
1:9.18.49-1~deb12u2· amd64 · bookworm-securityFixed · Fixed:
1:9.18.11-1dsa · bind9 · debian · bookworm
1:9.18.49-1~deb12u2· arm64 · bookworm-securityFixed · Fixed:
1:9.18.11-1dsa · bind9 · debian · bookworm
- [bind9utils]Unknown
Source package: [bind9]
Details (4)
1:9.18.49-1~deb12u1· all · bookwormFixed · Fixed:
1:9.18.11-1dsa · bind9 · debian · bookworm
1:9.18.49-1~deb12u1· all · bookwormFixed · Fixed:
1:9.18.11-1dsa · bind9 · debian · bookworm
1:9.18.49-1~deb12u2· all · bookworm-securityFixed · Fixed:
1:9.18.11-1dsa · bind9 · debian · bookworm
1:9.18.49-1~deb12u2· all · bookworm-securityFixed · Fixed:
1:9.18.11-1dsa · bind9 · debian · bookworm
- [dnsutils]Unknown
Source package: [bind9]
Details (4)
1:9.18.49-1~deb12u1· all · bookwormFixed · Fixed:
1:9.18.11-1dsa · bind9 · debian · bookworm
1:9.18.49-1~deb12u1· all · bookwormFixed · Fixed:
1:9.18.11-1dsa · bind9 · debian · bookworm
1:9.18.49-1~deb12u2· all · bookworm-securityFixed · Fixed:
1:9.18.11-1dsa · bind9 · debian · bookworm
1:9.18.49-1~deb12u2· all · bookworm-securityFixed · Fixed:
1:9.18.11-1dsa · bind9 · debian · bookworm
Observed:
References
- [https://access.redhat.com/errata/RHSA-2023:2261]
- [https://ftp.suse.com/pub/projects/security/csaf/rhsa-2023_2792.json]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2022-3924]
- [https://security-tracker.debian.org/tracker/CVE-2022-3924]
- [https://wid.cert-bund.de/.well-known/csaf/white/2023/wid-sec-w-2023-2917.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]