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authorZiyang Xuan <william.xuanziyang@huawei.com>2021-10-13 15:50:32 +0800
committerJakub Kicinski <kuba@kernel.org>2021-10-13 17:44:29 -0700
commit291c932fc3692e4d211a445ba8aa35663831bac7 (patch)
tree1178e0802a707fcadd60aedfee8327c20b31ece5 /net/nfc
parent58e7dcc9ca29c14e44267a4d0ea61e3229124907 (diff)
NFC: digital: fix possible memory leak in digital_in_send_sdd_req()
'skb' is allocated in digital_in_send_sdd_req(), but not free when digital_in_send_cmd() failed, which will cause memory leak. Fix it by freeing 'skb' if digital_in_send_cmd() return failed. Fixes: 2c66daecc409 ("NFC Digital: Add NFC-A technology support") Signed-off-by: Ziyang Xuan <william.xuanziyang@huawei.com> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net/nfc')
-rw-r--r--net/nfc/digital_technology.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/net/nfc/digital_technology.c b/net/nfc/digital_technology.c
index 84d2345c75a3..3adf4589852a 100644
--- a/net/nfc/digital_technology.c
+++ b/net/nfc/digital_technology.c
@@ -465,8 +465,12 @@ static int digital_in_send_sdd_req(struct nfc_digital_dev *ddev,
skb_put_u8(skb, sel_cmd);
skb_put_u8(skb, DIGITAL_SDD_REQ_SEL_PAR);
- return digital_in_send_cmd(ddev, skb, 30, digital_in_recv_sdd_res,
- target);
+ rc = digital_in_send_cmd(ddev, skb, 30, digital_in_recv_sdd_res,
+ target);
+ if (rc)
+ kfree_skb(skb);
+
+ return rc;
}
static void digital_in_recv_sens_res(struct nfc_digital_dev *ddev, void *arg,