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cfg80211: add sanity check for retry limit in wext-compat

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Block setting the wrong values through iwconfig retry
command. Add sanity checking before sending the retry
limit to the driver.

Signed-off-by: Ujjal Roy <royujjal@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Ujjal Roy 2014-01-09 21:16:14 +05:30 committed by Johannes Berg
parent bdfbec2d2d
commit f5aa0d21dd
1 changed files with 1 additions and 1 deletions
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2
net/wireless/wext-compat.c
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@ -370,7 +370,7 @@ static int cfg80211_wext_siwretry(struct net_device *dev,
u8 oshort = wdev->wiphy->retry_short;
int err;
if (retry->disabled ||
if (retry->disabled || retry->value < 1 || retry->value > 255 ||
(retry->flags & IW_RETRY_TYPE) != IW_RETRY_LIMIT)
return -EINVAL;