CVE-2024-49997

In the Linux kernel, the following vulnerability has been resolved: net: ethernet: lantiq_etop: fix memory disclosure When applying padding, the buffer is not zeroed, which results in memory disclosure. The mentioned data is observed on the wire. This patch uses skb_put_padto() to pad Ethernet frames properly. The mentioned function zeroes the expanded buffer. In case the packet cannot be padded it is silently dropped. Statistics are also not incremented. This driver does not support statistics in the old 32-bit format or the new 64-bit format. These will be added in the future. In its current form, the patch should be easily backported to stable versions. Ethernet MACs on Amazon-SE and Danube cannot do padding of the packets in hardware, so software padding must be applied.

In the Linux kernel, the following vulnerability has been resolved: net: ethernet: lantiq_etop: fix memory disclosure When applying padding, the buffer is not zeroed, which results in memory disclosure. The mentioned data is observed on the wire. This patch uses skb_put_padto() to pad Ethernet frames properly. The mentioned function zeroes the expanded buffer. In case the packet cannot be padded it is silently dropped. Statistics are also not incremented. This driver does not support statistics in the old 32-bit format or the new 64-bit format. These will be added in the future. In its current form, the patch should be easily backported to stable versions. Ethernet MACs on Amazon-SE and Danube cannot do padding of the packets in hardware, so software padding must be applied.

En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: ethernet: lantiq_etop: fix memory breach Al aplicar relleno, el búfer no se pone a cero, lo que da como resultado la divulgación de memoria. Los datos mencionados se observan en el cable. Este parche usa skb_put_padto() para rellenar los marcos Ethernet correctamente. La función mencionada pone a cero el búfer expandido. En caso de que el paquete no se pueda rellenar, se descarta silenciosamente. Las estadísticas tampoco se incrementan. Este controlador no admite estadísticas en el antiguo formato de 32 bits ni en el nuevo formato de 64 bits. Estos se agregarán en el futuro. En su forma actual, el parche debería poder retroportarse fácilmente a versiones estables. Las MAC de Ethernet en Amazon-SE y Danube no pueden realizar relleno de los paquetes en hardware, por lo que se debe aplicar relleno de software.