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| author | Dan Carpenter <dan.carpenter@oracle.com> | 2017-04-13 22:42:31 +0300 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2017-04-14 14:08:54 -0600 |
| commit | a88086e09876f468356cfec5319ff62004e36a1b (patch) | |
| tree | 3d4a3827e09b99da4c0a55b2a4d3d3b65aaebbd0 /net | |
| parent | 00e043936e9a1c274c29366c7ecd9e17c79418e6 (diff) | |
| download | linux-0-day-a88086e09876f468356cfec5319ff62004e36a1b.tar.gz linux-0-day-a88086e09876f468356cfec5319ff62004e36a1b.tar.xz | |
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: b1a951fe469e ("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>
Diffstat (limited to 'net')
| -rw-r--r-- | net/core/utils.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/core/utils.c b/net/core/utils.c index f96cf527bb8fc..32c467cf52d65 100644 --- a/net/core/utils.c +++ b/net/core/utils.c @@ -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); |