Mercurial > hg > nginx-quic
view auto/headers @ 7048:80224192163c
Resolver: fixed possible use-after-free while resolving SRV.
Resolving an SRV record includes resolving its host names in subrequests.
Previously, if memory allocation failed while reporting a subrequest result
after receiving a response from a DNS server, the SRV resolve handler was
called immediately with the NGX_ERROR state. However, if the SRV record
included another copy of the resolved name, it was reported once again.
This could trigger the use-after-free memory access after SRV resolve
handler freed the resolve context by calling ngx_resolve_name_done().
Now the SRV resolve handler is called only when all its subrequests are
completed.
author | Roman Arutyunyan <arut@nginx.com> |
---|---|
date | Tue, 04 Jul 2017 18:07:29 +0300 |
parents | d620f497c50f |
children |
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# Copyright (C) Igor Sysoev # Copyright (C) Nginx, Inc. ngx_include="unistd.h"; . auto/include ngx_include="inttypes.h"; . auto/include ngx_include="limits.h"; . auto/include ngx_include="sys/filio.h"; . auto/include ngx_include="sys/param.h"; . auto/include ngx_include="sys/mount.h"; . auto/include ngx_include="sys/statvfs.h"; . auto/include ngx_include="crypt.h"; . auto/include