Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2026-63985

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
19/07/2026
Last modified:
20/07/2026

Description

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> ethtool: eeprom: add more safeties to EEPROM Netlink fallback<br /> <br /> The Netlink fallback path for reading module EEPROM<br /> (fallback_set_params()) validates that offset total_len)<br /> return -EINVAL;<br /> <br /> This could lead to surprises in both drivers and device FW.<br /> Add the missing offset + length validation to fallback_set_params(),<br /> mirroring the ioctl.<br /> <br /> Similarly - ethtool core in general, and ethtool_get_any_eeprom()<br /> in particular tries to zero-init all buffers passed to the drivers<br /> to avoid any extra work of zeroing things out. eeprom_fallback()<br /> uses a plain kmalloc(), change it to zalloc.

Impact

Vector 3.x
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.80 HIGH
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x
7.80
Severity 3.x
HIGH

References to Advisories, Solutions, and Tools