From: Jiasheng Jiang jiasheng@iscas.ac.cn
[ Upstream commit 6ad27f522cb3b210476daf63ce6ddb6568c0508b ]
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 Signed-off-by: Sasha Levin sashal@kernel.org --- net/wireless/nl80211.c | 12 ++++++++++++ 1 file changed, 12 insertions(+)
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 04c4fd376e1d..c5806f46f6c9 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -11791,6 +11791,9 @@ 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++; } @@ -11803,6 +11806,15 @@ 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,