From: Timo Sirainen <timo.sirainen@open-xchange.com>
Date: Wed, 27 Oct 2021 10:06:10 +0000 (+0200)
Subject: lib-ssl-iostream: Fix assert-crash when OpenSSL returns syscall error without errno
X-Git-Tag: 2.3.18~175
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7fc901f37088a5f7815a8a591664096b4c72ad56;p=thirdparty%2Fdovecot%2Fcore.git

lib-ssl-iostream: Fix assert-crash when OpenSSL returns syscall error without errno

Incomplete fix in f41874b3dec541478a85275698a91f089f537df2

Fixes:
Panic: file istream-openssl.c: line 51 (i_stream_ssl_read_real): assertion failed: (errno != 0)
---

diff --git a/src/lib-ssl-iostream/iostream-openssl.c b/src/lib-ssl-iostream/iostream-openssl.c
index c44c31265f..6920c53390 100644
--- a/src/lib-ssl-iostream/iostream-openssl.c
+++ b/src/lib-ssl-iostream/iostream-openssl.c
@@ -614,6 +614,7 @@ int openssl_iostream_handle_error(struct ssl_iostream *ssl_io, int ret,
 		} else {
 			/* Seen this at least with v1.1.0l SSL_accept() */
 			errstr = "OpenSSL BUG: errno=0";
+			errno = EINVAL;
 		}
 		errstr = t_strdup_printf("%s syscall failed: %s",
 					 func_name, errstr);