Mercurial > hg > nginx-quic
comparison src/stream/ngx_stream_upstream_round_robin.c @ 7566:571383f75a9a
Resolver: fixed possible use-after-free while resolving PTR.
Previously, if a response to the PTR request was cached, and ngx_resolver_dup()
failed to allocate memory for the resulting name, then the original node was
freed but left in expire_queue. A subsequent address resolving would end up
in a use-after-free memory access of the node either in ngx_resolver_expire()
or ngx_resolver_process_ptr(), when accessing it through expire_queue.
The fix is to leave the resolver node intact.
author | Sergey Kandaurov <pluknet@nginx.com> |
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date | Tue, 10 Sep 2019 15:42:34 +0300 |
parents | b99cbafd51da |
children | 90cc7194e993 |
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7565:fd6dcc6f8a49 | 7566:571383f75a9a |
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