From: lily <floridsleeves@xxxxxxxxx> [ Upstream commit c624c58e08b15105662b9ab9be23d14a6b945a49 ] skb_copy_bits() could fail, which requires a check on the return value. Signed-off-by: Li Zhong <floridsleeves@xxxxxxxxx> Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- net/core/skbuff.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/net/core/skbuff.c b/net/core/skbuff.c index 48b6438f2a3d9..548f1adc14284 100644 --- a/net/core/skbuff.c +++ b/net/core/skbuff.c @@ -3986,9 +3986,8 @@ struct sk_buff *skb_segment(struct sk_buff *head_skb, SKB_GSO_CB(nskb)->csum_start = skb_headroom(nskb) + doffset; } else { - skb_copy_bits(head_skb, offset, - skb_put(nskb, len), - len); + if (skb_copy_bits(head_skb, offset, skb_put(nskb, len), len)) + goto err; } continue; } -- 2.35.1