CVE-2026-24030
Medium · 5.3CVSS
5.3
EPSS
0.5%
Published
Mar 31, 2026
CISA due date
—
The record
An attacker might be able to trick DNSdist into allocating too much memory while processing DNS over QUIC or DNS over HTTP/3 payloads, resulting in a denial of service. In setups with a large quantity of memory available this usually results in an exception and the QUIC connection is properly closed, but in some cases the system might enter an out-of-memory state instead and terminate the process.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| openSUSE:Leap 16.0 | dnsdist | 0 | 1.9.13-160000.1.1 |
| openSUSE:Tumbleweed | dnsdist | 0 | 2.0.3-1.1 |
Related vulnerabilities
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- CVE-2026-33602 A rogue backend can send a crafted UDP response with a query ID off by one related to the… Also affects dnsdist
- CVE-2026-33599 A rogue backend can send a crafted SVCB response to a Discovery of Designated Resolvers… Also affects dnsdist
- CVE-2026-33597 PRSD detection denial of service Also affects dnsdist
- CVE-2026-33254 An attacker can create a large number of concurrent DoQ or DoH3 connections, causing… Also affects dnsdist
- CVE-2026-33594 A client can trigger excessive memory allocation by generating a lot of queries that are… Also affects dnsdist
- CVE-2026-33595 A client can trigger excessive memory allocation by generating a lot of errors responses… Also affects dnsdist