From: Linyu Yuan <linyyuan@codeaurora.org>
To: Felipe Balbi <balbi@kernel.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
linux-usb@vger.kernel.org
Cc: linux-kernel@vger.kernel.org,
Linyu Yuan <linyyuan@codeaurora.com>,
stable@vger.kernel.org
Subject: [PATCH][v3] usb: gadget: eem: fix wrong eem header operation
Date: Wed, 9 Jun 2021 07:35:47 +0800 [thread overview]
Message-ID: <20210608233547.3767-1-linyyuan@codeaurora.org> (raw)
From: Linyu Yuan <linyyuan@codeaurora.com>
when skb_clone() or skb_copy_expand() fail,
it should pull skb with lengh indicated by header,
or not it will read network data and check it as header.
Cc: <stable@vger.kernel.org>
Signed-off-by: Linyu Yuan <linyyuan@codeaurora.com>
---
v3: cc stable kernel
v2: use scripts/get_maintainer.pl to get correct maintainer
drivers/usb/gadget/function/f_eem.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/usb/gadget/function/f_eem.c b/drivers/usb/gadget/function/f_eem.c
index cfcc4e81fb77..28dd5f1fd106 100644
--- a/drivers/usb/gadget/function/f_eem.c
+++ b/drivers/usb/gadget/function/f_eem.c
@@ -495,7 +495,7 @@ static int eem_unwrap(struct gether *port,
skb2 = skb_clone(skb, GFP_ATOMIC);
if (unlikely(!skb2)) {
DBG(cdev, "unable to unframe EEM packet\n");
- continue;
+ goto next;
}
skb_trim(skb2, len - ETH_FCS_LEN);
@@ -505,7 +505,7 @@ static int eem_unwrap(struct gether *port,
GFP_ATOMIC);
if (unlikely(!skb3)) {
dev_kfree_skb_any(skb2);
- continue;
+ goto next;
}
dev_kfree_skb_any(skb2);
skb_queue_tail(list, skb3);
--
2.25.1
reply other threads:[~2021-06-08 23:36 UTC|newest]
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