CVE-2025-21742

CVE-2025-21742 affects the Linux kernel’s usbnet: ipheth handling within URB buffers. The vulnerability arose because the start of the NDP16 block could be placed anywhere in the URB based on wNdpIndex, allowing the fixed-length portion of NDP16 to extend past the URB end and trigger an OoB read....

CVE-2025-21742 usbnet: ipheth: use static NDP16 location in URB

In the Linux kernel, the following vulnerability has been resolved: usbnet: ipheth: use static NDP16 location in URB Original code allowed for the start of NDP16 to be anywhere within the URB based on the wNdpIndex value in NTH16. Only the start position of NDP16 was checked, so it was possible f...