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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: b1a951fe46 ("net/utils: generic inet_pton_with_scope helper")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
zero-colors
Dan Carpenter 2017-04-13 22:42:31 +03:00 committed by Jens Axboe
parent 00e043936e
commit a88086e098
1 changed files with 1 additions and 1 deletions
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2
net/core/utils.c
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@ -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);