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Commit a88086e0 authored by Dan Carpenter's avatar Dan Carpenter Committed by Jens Axboe
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net: off by one in inet6_pton() 



If "scope_len" is sizeof(scope_id) then we would put the NUL terminator
one space beyond the end of the buffer.

Fixes: b1a951fe ("net/utils: generic inet_pton_with_scope helper")
Signed-off-by: default avatarDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: default avatarJens Axboe <axboe@fb.com>
parent 00e04393

net/core/utils.c

+1 −1
Original line number Diff line number Diff line
@@ -339,7 +339,7 @@ static int inet6_pton(struct net *net, const char *src, u16 port_num, 
	    src + srclen != scope_delim && *scope_delim == '%') {

		struct net_device *dev;

		char scope_id[16];

		size_t scope_len = min_t(size_t, sizeof(scope_id),

		size_t scope_len = min_t(size_t, sizeof(scope_id) - 1,

					 src + srclen - scope_delim - 1);



		memcpy(scope_id, scope_delim + 1, scope_len);