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Message-ID: <4707e2d0-9ed3-4924-9de9-848bead53a9d@frasunek.com>
Date: Fri, 24 Jul 2026 08:43:38 +0200
From: Przemyslaw Frasunek <przemyslaw@...sunek.com>
To: oss-security@...ts.openwall.com
Subject: Re: Knot Resolver 6.3.0 DNS-over-QUIC heap buffer
overflow (RCE)
> Hello,
>
> The following is a report of a remotely triggerable heap buffer
> overflow in Knot Resolver's DNS-over-QUIC (DoQ) receive path, leading
> to remote code execution. The issue was reported to CZ.NIC on
> 2026-06-08 and fixed in Knot Resolver 6.4.1, released on 2026-07-22.
It seems the vendor did not request a CVE for this issue, so I am asking for one.
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