CVE-2026-63985 (GCVE-0-2026-63985)
Vulnerability from cvelistv5
Published
2026-07-19 14:56
Modified
2026-10-19 20:18
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
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.
References
Impacted products
Vendor Product Version
Linux Linux Version: 96d971e307cc0e434f96329b42bbd98cfbca07d2
Version: 96d971e307cc0e434f96329b42bbd98cfbca07d2
Version: 96d971e307cc0e434f96329b42bbd98cfbca07d2
Version: 96d971e307cc0e434f96329b42bbd98cfbca07d2
Version: 96d971e307cc0e434f96329b42bbd98cfbca07d2
Version: 96d971e307cc0e434f96329b42bbd98cfbca07d2
Version: 96d971e307cc0e434f96329b42bbd98cfbca07d2
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}


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