CyberRota Analysis
AI-GeneratedThe vulnerability affects the Linux kernel's ethtool component, specifically in the Netlink fallback path for reading module EEPROM, where insufficient validation of the offset and length can lead to potential out-of-bounds memory access. This flaw could result in unexpected behavior in drivers and device firmware, potentially compromising system stability and security. Organizations utilizing Linux systems, particularly those relying on ethtool for network management, should prioritize patching this vulnerability to mitigate the associated risks.
Original NVD Description
In the Linux kernel, the following vulnerability has been resolved: ethtool: eeprom: add more safeties to EEPROM Netlink fallback The Netlink fallback path for reading module EEPROM (fallback_set_params()) validates that offset < eeprom_len, but does not check that offset + length stays within eeprom_len. The ioctl equivalent (ethtool_get_any_eeprom() in ioctl.c) has always enforced both bounds: if (eeprom.offset + eeprom.len > total_len) return -EINVAL; This could lead to surprises in both drivers and device FW. Add the missing offset + length validation to fallback_set_params(), mirroring the ioctl. Similarly - ethtool core in general, and ethtool_get_any_eeprom() in particular tries to zero-init all buffers passed to the drivers to avoid any extra work of zeroing things out. eeprom_fallback() uses a plain kmalloc(), change it to zalloc.