Bind 9.16.1 crash

[Andrew Latham]

I see https://gitlab.isc.org/isc-projects/bind9/-/issues/3020 and
https://gitlab.isc.org/isc-projects/bind9/-/merge_requests/5998 which might
help

I did not see a CVE but only did a quick search


On Wed, Dec 7, 2022 at 12:33 PM Ben Bridges <bbridges at springnet.net> wrote:

> Greetings.
>
>
>
> This morning one of our BIND daemons crashed.  The following messages were
> logged in named.run at the time:
>
>
>
> 07-Dec-2022 11:58:37.097 general: critical: netmgr.c:687:
> REQUIRE((__builtin_expect(!!((sock) != ((void *)0)), 1) &&
> __builtin_expect(!!(((const isc__magic_t *)(sock))->magic == ((('N') << 24
> | ('M') << 16 | ('S') << 8 | ('K')))), 1))) failed, back trace
>
> 07-Dec-2022 11:58:37.097 general: critical: #0 0x56508c798e43 in ??
>
> 07-Dec-2022 11:58:37.097 general: critical: #1 0x7fa72e881ac0 in ??
>
> 07-Dec-2022 11:58:37.097 general: critical: #2 0x7fa72e89978a in ??
>
> 07-Dec-2022 11:58:37.097 general: critical: #3 0x7fa72e89a240 in ??
>
> 07-Dec-2022 11:58:37.097 general: critical: #4 0x7fa72e89e18b in ??
>
> 07-Dec-2022 11:58:37.097 general: critical: #5 0x7fa72eb67707 in ??
>
> 07-Dec-2022 11:58:37.097 general: critical: #6 0x7fa72eb68fe9 in ??
>
> 07-Dec-2022 11:58:37.097 general: critical: #7 0x7fa72eb779b0 in ??
>
> 07-Dec-2022 11:58:37.097 general: critical: #8 0x7fa72eb7f9a7 in ??
>
> 07-Dec-2022 11:58:37.097 general: critical: #9 0x7fa72eb8116e in ??
>
> 07-Dec-2022 11:58:37.097 general: critical: #10 0x7fa72eb816cd in ??
>
> 07-Dec-2022 11:58:37.097 general: critical: #11 0x7fa72eb823c9 in ??
>
> 07-Dec-2022 11:58:37.097 general: critical: #12 0x7fa72eb884c6 in ??
>
> 07-Dec-2022 11:58:37.097 general: critical: #13 0x7fa72e8a8fa1 in ??
>
> 07-Dec-2022 11:58:37.097 general: critical: #14 0x7fa72e370609 in ??
>
> 07-Dec-2022 11:58:37.097 general: critical: #15 0x7fa72e28f133 in ??
>
> 07-Dec-2022 11:58:37.097 general: critical: exiting (due to assertion
> failure)
>
>
>
> I did some googling and was unable to find this specific “netmgr.c:687”
> message.  Is this assertion failure due to a known CVE (perhaps recently
> discovered and not yet patched)?  We’ve had no issues with this server up
> to this point.  The BIND version is 9.16.1 running on a fully patched
> Ubuntu 20.04.5 server.  This server does nothing other than run BIND.  Any
> assistance determining what happened and how to prevent it from happening
> again would be much appreciated.  If this is not the proper forum for this
> posting, please point me in the right direction.
>
>
>
> Thanks,
>
> Ben Bridges
>
>
>
>
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>
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>
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-- 
- Andrew "lathama" Latham -
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