From: Linyu Yuan <linyyuan@codeaurora.com> commit 305f670846a31a261462577dd0b967c4fa796871 upstream. 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> Link: https://lore.kernel.org/r/20210608233547.3767-1-linyyuan@codeaurora.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> --- 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 c13befa311107..0d74e561607db 100644 --- a/drivers/usb/gadget/function/f_eem.c +++ b/drivers/usb/gadget/function/f_eem.c @@ -498,7 +498,7 @@ 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); @@ -508,7 +508,7 @@ 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