Unsupported DNSSEC algorithms should not lead to SERVFAIL.

[Ondřej Surý]

Agreed.

I would suggest doing a full bug report into an issue next time and including all the relevant details instead of piggybacking on an internal issue.

There is a subtle difference between #5570 and the issue reported below, and thus these are two distinct bugs.

Ondrej
--
Ondřej Surý (He/Him)
ondrej at isc.org

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

> On 4. 11. 2025, at 7:21, Petr Menšík via bind-users <bind-users at lists.isc.org> wrote:
> 
> Unfortunately this is a rare moment, when Ondřej is not correct. This affects all versions, which included fix for CVE-2025-8677. Yes, I verified also our builds are affected. Fedora 9.18.41 contains the same problem, but OpenSSL library does not prevent usage of 5 and 7 algorithms there. It is not visible.
> 
> But in any case, similar reports should contain delv +vtrace output from your side. Especially because it should be able to reproduce it on any system, which disables RSASHA1 and RSASHA1NSEC3 algorithms. But delv tool shows wrong behaviour only on CentOS 9 or CentOS 10 derivatives. On other systems it seems unaffected on the first glance.
> 
> Development version contains code modifications, which has similar problem in a bit different place and with different fix needed. But unlike original assumption it affects also stable versions.
> 
> Cheers,
> Petr
> 
> On 30/10/2025 22:39, Ondřej Surý wrote:
>> No, you have not been caught by this. The issue you are referring to affects only a development
>> version of BIND 9 (9.21), so whatever you are experiencing is not related to this.
>> 
>> You need to provide evidence (logs, reproducer) about what is going on, so we can help you
>> diagnose the issue you are experiencing.
>> 
>> Ondrej
>> --
>> Ondřej Surý (He/Him)
>> ondrej at isc.org
>> 
>> My working hours and your working hours may be different. Please do not feel obligated to reply outside your normal working hours.
> 
> -- 
> Petr Menšík
> Senior Software Engineer, RHEL
> Red Hat, https://www.redhat.com/
> PGP: DFCF908DB7C87E8E529925BC4931CA5B6C9FC5CB
> 
> -- 
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