!28 libssh2社区补丁回合

From: @zjay998 
Reviewed-by: @zengwefeng 
Signed-off-by: @zengwefeng

backport-misc-libssh2_copy_string-avoid-malloc-zero-bytes.patch

@@ -0,0 +1,33 @@
+From: https://github.com/libssh2/libssh2/commit/e7e1312b0cbfa643e2f8bf5f2036ce5147ed797d
+From: bagder <daniel@haxx.se>
+Date: 21 Mar 2022 10:11 -0800
+Subject: misc/libssh2_copy_string: avoid malloc zero bytes #686
+
+Notes:
+* Avoid the inconsistent malloc return code for malloc(0)
+
+--- libssh2-1.10.0/src/misc.c	2019-09-13 14:39:11.000000000 +0800
++++ libssh2-1.10.0/src/misc.c	2022-09-29 18:27:13.604424483 +0800
+@@ -794,12 +794,18 @@
+         return -1;
+     }
+ 
+-    *outbuf = LIBSSH2_ALLOC(session, str_len);
+-    if(*outbuf) {
+-        memcpy(*outbuf, str, str_len);
++    if(str_len) {
++        *outbuf = LIBSSH2_ALLOC(session, str_len);
++        if(*outbuf) {
++            memcpy(*outbuf, str, str_len);
++        }
++        else {
++            return -1;
++        }
+     }
+     else {
+-        return -1;
++	*outlen = 0;
++        *outbuf = NULL;
+     }
+ 
+     if(outlen)

libssh2.spec

@@ -1,12 +1,13 @@
 Name:		libssh2
 Version:	1.10.0
-Release:	2
+Release:	3
 Summary:	A library implementing the SSH2 protocol
 License:	BSD
 URL:		https://www.libssh2.org/
 Source0:	https://libssh2.org/download/libssh2-%{version}.tar.gz
 
 Patch0:		backport-RSA-SHA2-256-512-key-upgrade-support-RFC-8332.patch
+Patch1:		backport-misc-libssh2_copy_string-avoid-malloc-zero-bytes.patch
 
 BuildRequires:	coreutils findutils /usr/bin/man zlib-devel
 BuildRequires:	gcc make sed openssl-devel > 1:1.0.1 openssh-server
@@ -86,6 +87,12 @@ LC_ALL=en_US.UTF-8 make -C tests check
 %{_mandir}/man3/libssh2_*.3*
 
 %changelog
+* Thu Sep 29 2022 zhangjun <zhangjun@kylinos.cn> - 1.10.0-3
+- Type:bugfix
+- ID:NA
+- SUG:NA
+- DESC:Avoid the inconsistent malloc return code for malloc(0)
+
 * Sat Jul 30 2022 renmingshuai <renmingshuai@huawei.com> - 1.10.0-2
 - Type:bugfix
 - ID:NA