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Fix data race in offloaded dns_message_checksig()

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When verifying a message in an offloaded thread there is a race with
the worker thread which writes to the same buffer. Clone the message
buffer before offloading.

(cherry picked from commit 35ef25e5ea442eb0cb3731b1f2a0546394a2e97a)
This commit is contained in:
Aram Sargsyan 2024-09-11 15:58:11 +00:00 committed by Arаm Sаrgsyаn
parent 02822b70ee
commit 65fced42b9
1 changed files with 1 additions and 0 deletions
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lib/dns/message.c
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@ -3254,6 +3254,7 @@ dns_message_checksig_async(dns_message_t *msg, dns_view_t *view,
dns_message_attach(msg, &chsigctx->msg);
dns_view_attach(view, &chsigctx->view);
dns_message_clonebuffer(msg);
isc_work_enqueue(loop, checksig_run, checksig_cb, chsigctx);
return (DNS_R_WAIT);