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

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CVE-2026-63987

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: coalesce: cap profile updates at NET_DIM_PARAMS_NUM_PROFILES<br /> <br /> ethnl_update_profile() walks the ETHTOOL_A_PROFILE_IRQ_MODERATION<br /> nest list with an index &amp;#39;i&amp;#39; and writes new_profile[i++] without<br /> bounding i. The destination is kmemdup()&amp;#39;d at NET_DIM_PARAMS_NUM_PROFILES<br /> entries (5), but the Netlink nest count is entirely user-controlled.<br /> Netlink policies do not have support for constraining the number<br /> of nested entries (or number of multi-attr entries).

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