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

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CVE-2026-46238

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
28/05/2026
Last modified:
30/05/2026

Description

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> batman-adv: stop caching unowned originator pointers in BAT IV<br /> <br /> BAT IV keeps the last-hop neighbor address in each neigh_node, but some<br /> paths also cache an originator pointer derived from a temporary lookup.<br /> That pointer is not owned by the neigh_node and may no longer refer to a<br /> live originator entry after purge handling runs.<br /> <br /> Stop storing the auxiliary originator pointer in the BAT IV neighbor<br /> state. When BAT IV needs the neighbor originator data, resolve it from<br /> the stored neighbor address and drop the reference again after use.<br /> <br /> [sven: avoid bonding logic for outgoing OGM]

Impact

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

Base Score: 8.80 HIGH
Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Adjacent
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
8.80
Severity 3.x
HIGH

References to Advisories, Solutions, and Tools