> Does this apply to all resolvers that support these record types

Yes

> Is there any way to configure BIND to not support serving these types of 
> records?

No. You can probably delete the implementation and recompile the old version, 
but
then it just might be easier to upgrade (or apply the patch for these two).

Ondrej
--
Ondřej Surý (He/Him)
[email protected]

My working hours and your working hours may be different. Please do not feel 
obligated to reply outside your normal working hours.

> On 21. 1. 2026, at 17:49, Sebby, Brian A. via bind-users 
> <[email protected]> wrote:
> 
> I apologize; I accidentally hit Send before completing my message.
> 
> Just for a bit of clarity, the security vulnerability indicates that it can 
> cause a resolver to crash with malformed BRID or HHIT records.  Does this 
> apply to all resolvers that support these record types, or only in cases 
> where your server does serve records of these types?  I’m assuming the former 
> but just wanted to check.  Is there any way to configure BIND to not support 
> serving these types of records?
> 
> 
> Thanks,
> 
> Brian
> 
> -- 
> Brian Sebby (he/him/his)      |  Lead Systems Engineer
> Email: [email protected]          |  Information Technology Infrastructure
> Phone: +1 630.252.9935        |  Business Information Services
> Cell:  +1 630.921.4305        |  Argonne National Laboratory
> From: Sebby, Brian A. <[email protected]>
> Date: Wednesday, January 21, 2026 at 10:44 AM
> To: [email protected] <[email protected]>
> Subject: Re: New BIND 9 releases: 9.18.44, 9.20.18, 9.21.17
> 
> Just for a bit of clarity, the security vulnerability indicates that it can 
> cause a resolver to crash with malformed BRID or HH
> 
> -- 
> Brian Sebby (he/him/his)      |  Lead Systems Engineer
> Email: [email protected]          |  Information Technology Infrastructure
> Phone: +1 630.252.9935        |  Business Information Services
> Cell:  +1 630.921.4305        |  Argonne National Laboratory
> From: bind-announce <[email protected]> on behalf of 
> Suzanne Goldlust <[email protected]>
> Date: Wednesday, January 21, 2026 at 7:03 AM
> To: [email protected] <[email protected]>
> Subject: New BIND 9 releases: 9.18.44, 9.20.18, 9.21.17
> 
> This Message Is From an External Sender
> This message came from outside your organization.
>   Our January 2026 maintenance releases of BIND 9 are available and can be 
> downloaded from the links below. Packages and container images provided by 
> ISC will be updated later today.
> 
> In addition to bug fixes and feature improvements, these releases also 
> contain fixes for a security vulnerability. More information can be found in 
> the following Security Advisory:
> 
> https://urldefense.us/v3/__https://kb.isc.org/docs/cve-2025-13878__;!!G_uCfscf7eWS!d0s-4i1hti59FxMTbbE4MFk1Sq6MdrsFh95Ob-Mt064-pwP5hDq1UeJQf4Ixna0nEpQ8OIROe1yRJew$
> 
> A link to each newly-released version follows. Each release directory 
> includes a complete source tarball, cryptographic signature, and release 
> notes. The release notes provide a summary of significant changes, and should 
> be reviewed before upgrading.
> 
> - Current supported stable branches:
> 
> - 9.18.44 - 
> https://urldefense.us/v3/__https://downloads.isc.org/isc/bind9/9.18.44/__;!!G_uCfscf7eWS!d0s-4i1hti59FxMTbbE4MFk1Sq6MdrsFh95Ob-Mt064-pwP5hDq1UeJQf4Ixna0nEpQ8OIROLLuMLQw$
> - 9.20.18 - 
> https://urldefense.us/v3/__https://downloads.isc.org/isc/bind9/9.20.18/__;!!G_uCfscf7eWS!d0s-4i1hti59FxMTbbE4MFk1Sq6MdrsFh95Ob-Mt064-pwP5hDq1UeJQf4Ixna0nEpQ8OIROMXXa1DI$
> 
> - Experimental development branch:
> 
> - 9.21.17 - 
> https://urldefense.us/v3/__https://downloads.isc.org/isc/bind9/9.21.17/__;!!G_uCfscf7eWS!d0s-4i1hti59FxMTbbE4MFk1Sq6MdrsFh95Ob-Mt064-pwP5hDq1UeJQf4Ixna0nEpQ8OIROrLsT550$
> 
> For more information and other release formats, consult the ISC software 
> download page: 
> https://urldefense.us/v3/__https://www.isc.org/download/__;!!G_uCfscf7eWS!d0s-4i1hti59FxMTbbE4MFk1Sq6MdrsFh95Ob-Mt064-pwP5hDq1UeJQf4Ixna0nEpQ8OIRO9iZzXSA$
> 
> ---
> 
> As a reminder, BIND’s supported platforms are listed in the ARM 
> (https://urldefense.us/v3/__https://bind9.readthedocs.io/en/stable/chapter2.html*supported-platforms__;Iw!!G_uCfscf7eWS!d0s-4i1hti59FxMTbbE4MFk1Sq6MdrsFh95Ob-Mt064-pwP5hDq1UeJQf4Ixna0nEpQ8OIROyUh2pHU$)
>  and in this knowledgebase article 
> (https://urldefense.us/v3/__https://kb.isc.org/docs/supported-platforms__;!!G_uCfscf7eWS!d0s-4i1hti59FxMTbbE4MFk1Sq6MdrsFh95Ob-Mt064-pwP5hDq1UeJQf4Ixna0nEpQ8OIRO-WnT8VQ$).
> -- 
> bind-announce mailing list
> [email protected]
> https://urldefense.us/v3/__https://lists.isc.org/mailman/listinfo/bind-announce__;!!G_uCfscf7eWS!d0s-4i1hti59FxMTbbE4MFk1Sq6MdrsFh95Ob-Mt064-pwP5hDq1UeJQf4Ixna0nEpQ8OIRO1Jf2C5o$
> 
> -- 
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> this list.

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