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| author |   Dan Carpenter <error27@gmail.com> | 2010-07-11 00:10:42 +0200 |
|---|---|---|
| committer |   John W. Linville <linville@tuxdriver.com> | 2010-07-12 16:05:32 -0400 |
| commit | 8b967e41e0f75328150b7cddf79de4ee57616f01 (patch) | |
| tree | 341131276969b7ee62c8de5d40e6d6367f5874d1 | |
| parent | adm8211: fix memory leak (diff) | |
| download | linux-dev-8b967e41e0f75328150b7cddf79de4ee57616f01.tar.xz linux-dev-8b967e41e0f75328150b7cddf79de4ee57616f01.zip | |
hostap: fixup strlen() math
In hostap_add_interface() we do:
sprintf(dev->name, "%s%s", prefix, name);
dev->name has IFNAMSIZ (16) characters.
prefix is local->dev->name.
name is "wds%d"
strlen() returns the number of characters in the string not counting the
NULL so if we have a string with 11 characters we get "12345678901wds%d"
which is 16 characters and a NULL so we're past the end of the array.
Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
| -rw-r--r-- | drivers/net/wireless/hostap/hostap_main.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/wireless/hostap/hostap_main.c b/drivers/net/wireless/hostap/hostap_main.c index eaee84b55887..25a2722c8a98 100644 --- a/drivers/net/wireless/hostap/hostap_main.c +++ b/drivers/net/wireless/hostap/hostap_main.c @@ -186,7 +186,7 @@ int prism2_wds_add(local_info_t *local, u8 *remote_addr, return -ENOBUFS; /* verify that there is room for wds# postfix in the interface name */ - if (strlen(local->dev->name) > IFNAMSIZ - 5) { + if (strlen(local->dev->name) >= IFNAMSIZ - 5) { printk(KERN_DEBUG "'%s' too long base device name\n", local->dev->name); return -EINVAL; |