CVE-2026-43098

A flaw was found in the Linux kernel's Near Field Communication (NFC) subsystem, specifically within the s3fwrn5 driver. This vulnerability occurs when the driver attempts to consume bytes into a receive buffer (recv_skb) without ensuring a new buffer is allocated if the previous one was delivered. If the allocation of a new buffer fails, the recv_skb pointer can become NULL, leading to a NULL dereference during subsequent operations. A local attacker could exploit this memory corruption vulnerability to cause a system crash, resulting in a Denial of Service (DoS).