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Review reviewHigh

CVE-2026-63985

Linux

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...

CVSS
7.8
EPSS
-
- percentile
CISA KEV
Not listed
Published
2026.07.20
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability-
Technical severityCVSS 7.8

Vulnerability overview

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...

Affected product and versions

Product
Linux
Affected versions
>= 96d971e307cc0e434f96329b42bbd98cfbca07d2 < 0e182689831277faf2ef683573a60474c208f690, >= 96d971e307cc0e434f96329b42bbd98cfbca07d2 < 6ed7ebe22e9c3e3e946b6973c1ce43d3c38aeac1, >= 96d971e307cc0e434f96329b42bbd98cfbca07d2 < 65674d2489a12b8efd2ca0effb3de1d12224b596, >= 96d971e307cc0e434f96329b42bbd98cfbca07d2 < d81376053a00865c70b8d8506a1cb93f2943d413, >= 96d971e307cc0e434f96329b42bbd98cfbca07d2 < fd0de51c54fa8474a0ddeedd71c65ad09fada390, >= 96d971e307cc0e434f96329b42bbd98cfbca07d2 < 4fe1bc4b3603f621240d5b401742f302190db769, >= 96d971e307cc0e434f96329b42bbd98cfbca07d2 < 67cfdd9210b99f260b3e0afeb9525e0acc7be31e, >= 5.13
Fixed versions
No verified fixed-version field is available yet

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
Not available
CVE-2026-63985 — Linux | SECUFOCUS NOW