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| author | Jiasheng Jiang <jiasheng@iscas.ac.cn> | 2022-03-01 13:00:20 +0300 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2022-03-01 13:15:08 +0300 |
| commit | 6ad27f522cb3b210476daf63ce6ddb6568c0508b (patch) | |
| tree | 2228a67af8007299f1bd419844cd9d3edab51813 /net/wireless | |
| parent | 5a6248c0a22352f09ea041665d3bd3e18f6f872c (diff) | |
| download | linux-6ad27f522cb3b210476daf63ce6ddb6568c0508b.tar.xz | |
nl80211: Handle nla_memdup failures in handle_nan_filter
As there's potential for failure of the nla_memdup(),
check the return value.
Fixes: a442b761b24b ("cfg80211: add add_nan_func / del_nan_func")
Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Link: https://lore.kernel.org/r/20220301100020.3801187-1-jiasheng@iscas.ac.cn
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/wireless')
| -rw-r--r-- | net/wireless/nl80211.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 578bff9c378b..b1909ce2b739 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -13411,6 +13411,9 @@ static int handle_nan_filter(struct nlattr *attr_filter, i = 0; nla_for_each_nested(attr, attr_filter, rem) { filter[i].filter = nla_memdup(attr, GFP_KERNEL); + if (!filter[i].filter) + goto err; + filter[i].len = nla_len(attr); i++; } @@ -13423,6 +13426,15 @@ static int handle_nan_filter(struct nlattr *attr_filter, } return 0; + +err: + i = 0; + nla_for_each_nested(attr, attr_filter, rem) { + kfree(filter[i].filter); + i++; + } + kfree(filter); + return -ENOMEM; } static int nl80211_nan_add_func(struct sk_buff *skb, |