| Name | CVE-2022-3924 |
| Description | 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DSA-5329-1 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| bind9 (PTS) | buster | 1:9.11.5.P4+dfsg-5.1+deb10u7 | fixed |
| buster (security) | 1:9.11.5.P4+dfsg-5.1+deb10u10 | fixed | |
| bullseye | 1:9.16.44-1~deb11u1 | fixed | |
| bullseye (security) | 1:9.16.48-1 | fixed | |
| bookworm | 1:9.18.19-1~deb12u1 | fixed | |
| bookworm (security) | 1:9.18.24-1 | fixed | |
| sid, trixie | 1:9.19.21-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| bind9 | source | buster | (not affected) | |||
| bind9 | source | bullseye | 1:9.16.37-1~deb11u1 | DSA-5329-1 | ||
| bind9 | source | (unstable) | 1:9.18.11-1 |
[buster] - bind9 <not-affected> (Vulnerable code introduced later)
https://kb.isc.org/docs/cve-2022-3924