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File _service:obs_scm:0009-fix-stack-buffer-overflow-when-memcpy-addr.patch of Package lwip
From d1f9ccd5da1712477f30bf2662e8888395ed95cd Mon Sep 17 00:00:00 2001 From: wuchangsheng <wuchangsheng2@huawei.com> Date: Wed, 21 Jul 2021 20:01:47 +0800 Subject: [PATCH] fix stack-buffer-overflow in lwip_sock_make_addr and lwip_getaddrname --- src/api/sockets.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/src/api/sockets.c b/src/api/sockets.c index 1c3d4a3..3a8a74c 100644 --- a/src/api/sockets.c +++ b/src/api/sockets.c @@ -1323,6 +1323,8 @@ lwip_recv_tcp_done: add_epoll_event(sock->conn, EPOLLIN); } } +#else + *fromlen = LWIP_MIN(*fromlen, sizeof(saddr)); #endif set_errno(0); return recvd; @@ -3179,6 +3181,8 @@ lwip_getaddrname(int s, struct sockaddr *name, socklen_t *namelen, u8_t local) if (*namelen > IPADDR_SOCKADDR_GET_LEN(&saddr)) { *namelen = IPADDR_SOCKADDR_GET_LEN(&saddr); } +#else + *namelen = LWIP_MIN(*namelen, sizeof(saddr)); #endif MEMCPY(name, &saddr, *namelen); -- 2.23.0
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