CVE-2026-31736

About vulnerability

In the Linux kernel, the following vulnerability has been resolved: net: ethernet: mtk_ppe: avoid NULL deref when gmac0 is disabled If the gmac0 is disabled, the precheck for a valid ingress device will cause a NULL pointer deref and crash the system. This happens because eth->netdev[0] will be NULL but the code will directly try to access netdev_ops. Instead of just checking for the first net_device, it must be checked if any of the mtk_eth net_devices is matching the netdev_ops of the ingress device. A flaw was found in the Linux kernel’s mtk_ppe Ethernet driver. When the gmac0 interface is disabled, a precheck for a valid ingress device can lead to a NULL pointer dereference. This vulnerability can cause a system crash, resulting in a Denial of Service (DoS).

Live-patch status from KernelCare for each operating system.