Instituto Nacional de ciberseguridad. Sección Incibe
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CVE-2026-64056

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 /> net: ethernet: cortina: Make RX SKB per-port<br /> <br /> The SKB used to assemble packets from fragments in gmac_rx()<br /> is static local, but the Gemini has two ethernet ports, meaning<br /> there can be races between the ports on a bad day if a device<br /> is using both.<br /> <br /> Make the RX SKB a per-port variable and carry it over between<br /> invocations in the port struct instead.<br /> <br /> Zero the pointer once we call napi_gro_frags(), on error (after<br /> calling napi_free_frags()) or if the port is stopped.<br /> <br /> Zero it in some place where not strictly necessary just to<br /> emphasize what is going on.<br /> <br /> This was found by Sashiko during normal patch review.

Impact

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

Base Score: 9.80 CRITICAL
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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

Base Score 3.x
9.80
Severity 3.x
CRITICAL

References to Advisories, Solutions, and Tools