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author | Jiasheng Jiang <jiasheng@iscas.ac.cn> | 2022-03-01 13:00:20 +0300 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-03-08 21:07:50 +0300 |
commit | 3f123c305e4a9cc3d091f9342e838433effa87b6 (patch) | |
tree | 20db9d40239c72686acf96443251b669f96e7ab6 /net | |
parent | ec89b276464ca9eff094ba3aa70a4c8de2831082 (diff) | |
download | linux-3f123c305e4a9cc3d091f9342e838433effa87b6.tar.xz |
nl80211: Handle nla_memdup failures in handle_nan_filter
[ 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>
Diffstat (limited to 'net')
-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 7633d6a74bc2..f2bc465de284 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -12320,6 +12320,9 @@ 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++; } @@ -12332,6 +12335,15 @@ 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, |