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 --- drivers/usb/gadget/function/f_eem.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/usb/gadget/function/f_eem.c +++ b/drivers/usb/gadget/function/f_eem.c @@ -502,7 +502,7 @@ static int eem_unwrap(struct gether *por 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);
@@ -513,7 +513,7 @@ static int eem_unwrap(struct gether *por if (unlikely(!skb3)) { DBG(cdev, "unable to realign EEM packet\n"); dev_kfree_skb_any(skb2); - continue; + goto next; } dev_kfree_skb_any(skb2); skb_queue_tail(list, skb3);