CVE-2026-43098

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> nfc: s3fwrn5: allocate rx skb before consuming bytes<br /> <br /> s3fwrn82_uart_read() reports the number of accepted bytes to the serdev<br /> core. The current code consumes bytes into recv_skb and may already<br /> deliver a complete frame before allocating a fresh receive buffer.<br /> <br /> If that alloc_skb() fails, the callback returns 0 even though it has<br /> already consumed bytes, and it leaves recv_skb as NULL for the next<br /> receive callback. That breaks the receive_buf() accounting contract and<br /> can also lead to a NULL dereference on the next skb_put_u8().<br /> <br /> Allocate the receive skb lazily before consuming the next byte instead.<br /> If allocation fails, return the number of bytes already accepted.