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Vulnerabilities CVE-2026-63985

CVE-2026-63985

None
Open
TLP:CLEAR

ethtool: eeprom: add more safeties to EEPROM Netlink fallback

NVD CVE.org
Critical Infrastructure

AI Analysis

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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.

Details

EPSS Score
0.13%

2.9th percentile

Confidence
90%
Published
Jul 19, 2026
Last Modified
Jul 19, 2026
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