virtio_net_hdr_to_skb() refuses packets whose checksum metadata it cannot make sense of, but the vector raw transport ignored its return value: rejected packets went on into the stack with their metadata unvalidated.
Propagate the failure. Assisted-by: LLM Signed-off-by: Michael S. Tsirkin <[email protected]> --- arch/um/drivers/vector_transports.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/arch/um/drivers/vector_transports.c b/arch/um/drivers/vector_transports.c index e1fb2a76fdff..8b7548458663 100644 --- a/arch/um/drivers/vector_transports.c +++ b/arch/um/drivers/vector_transports.c @@ -210,7 +210,9 @@ static int raw_verify_header( return 1; skb_set_network_header(skb, ETH_HLEN); - virtio_net_hdr_to_skb(skb, vheader, virtio_legacy_is_little_endian()); + if (virtio_net_hdr_to_skb(skb, vheader, + virtio_legacy_is_little_endian()) < 0) + return -1; return 0; } -- MST
