Commit 58d1eab7 authored Jun 06, 2012 by Sasha Levin Committed by John W. Linville Jun 08, 2012

NFC: Fix possible NULL ptr deref when getting the name of a socket



llcp_sock_getname() might get called before the LLCP socket was created.
This condition isn't checked, and llcp_sock_getname will simply deref a
NULL ptr in that case.

This exists starting with d646960f ("NFC: Initial LLCP support").

Signed-off-by: Sasha Levin <levinsasha928@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

parent d012d04e

net/nfc/llcp/sock.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -292,6 +292,9 @@ static int llcp_sock_getname(struct socket sock, struct sockaddr addr,

		pr_debug("%p\n", sk);

		if (llcp_sock == NULL)
		return -EBADFD;

		addr->sa_family = AF_NFC;
		*len = sizeof(struct sockaddr_nfc_llcp);