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| author | Shang XiaoJing <shangxiaojing@huawei.com> | 2022-10-27 17:03:31 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-11-10 20:14:17 +0300 |
| commit | 0acfcd2aed4f7eaf086218414c6b7a197c9873f3 (patch) | |
| tree | f22f23718ac202fc0fe17e77d551993f404007a7 /drivers | |
| parent | 9ae2c9a91ff068f4c3e392f47e8e26a1c9f85ebb (diff) | |
| download | linux-0acfcd2aed4f7eaf086218414c6b7a197c9873f3.tar.xz | |
nfc: s3fwrn5: Fix potential memory leak in s3fwrn5_nci_send()
[ Upstream commit 3a146b7e3099dc7cf3114f627d9b79291e2d2203 ]
s3fwrn5_nci_send() will call s3fwrn5_i2c_write() or s3fwrn82_uart_write(),
and free the skb if write() failed. However, even if the write() run
succeeds, the skb will not be freed in write(). As the result, the skb
will memleak. s3fwrn5_nci_send() should also free the skb when write()
succeeds.
Fixes: c04c674fadeb ("nfc: s3fwrn5: Add driver for Samsung S3FWRN5 NFC Chip")
Signed-off-by: Shang XiaoJing <shangxiaojing@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/nfc/s3fwrn5/core.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/nfc/s3fwrn5/core.c b/drivers/nfc/s3fwrn5/core.c index ba6c486d6465..9b43cd3a45af 100644 --- a/drivers/nfc/s3fwrn5/core.c +++ b/drivers/nfc/s3fwrn5/core.c @@ -97,11 +97,15 @@ static int s3fwrn5_nci_send(struct nci_dev *ndev, struct sk_buff *skb) } ret = s3fwrn5_write(info, skb); - if (ret < 0) + if (ret < 0) { kfree_skb(skb); + mutex_unlock(&info->mutex); + return ret; + } + consume_skb(skb); mutex_unlock(&info->mutex); - return ret; + return 0; } static int s3fwrn5_nci_post_setup(struct nci_dev *ndev) |