A flaw was found in the Linux kernel's Near Field Communication (NFC) pn533 driver. A local attacker could exploit this vulnerability by sending a continuous stream of malformed Universal Asynchronous Receiver-Transmitter (UART) traffic. This improper handling of incoming data leads to an unbounded growth of the receive buffer, which can exhaust system memory and result in a Denial of Service (DoS).

Red Hat Enterprise Linux 10 Not affected kernel Red Hat Enterprise Linux 6 Not affected kernel Red Hat Enterprise Linux 7 Not affected kernel Red Hat Enterprise Linux 7 Not affected kernel-rt Red Hat Enterprise Linux 8 Not affected kernel Red Hat Enterprise Linux 8 Not affected kernel-rt Red Hat Enterprise Linux 9 Not affected kernel Red Hat Enterprise Linux 9 Not affected kernel-rt https://www.cve.org/CVERecord?id=CVE-2026-43032 https://nvd.nist.gov/vuln/detail/CVE-2026-43032 https://lore.kernel.org/linux-cve-announce/2026050101-CVE-2026-43032-a377@gregkh/T