CVE-2026-46238 Details
Description
In the Linux kernel, the following vulnerability has been resolved: batman-adv: stop caching unowned originator pointers in BAT IV BAT IV keeps the last-hop neighbor address in each neigh_node, but some paths also cache an originator pointer derived from a temporary lookup. That pointer is not owned by the neigh_node and may no longer refer to a live originator entry after purge handling runs. Stop storing the auxiliary originator pointer in the BAT IV neighbor state. When BAT IV needs the neighbor originator data, resolve it from the stored neighbor address and drop the reference again after use. [sven: avoid bonding logic for outgoing OGM]
A vulnerability in the Linux kernel's batman-adv module has been addressed, specifically related to the BAT IV protocol. The issue involved improper caching of originator pointers in neighbor nodes, which could lead to inconsistencies after certain cleanup processes. The vulnerability was present in the stable version of the Linux kernel.
Users can upgrade to the latest version of the Linux kernel where this vulnerability has been fixed. Instructions for downloading the updated kernel can be found on the official Linux kernel website.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/09dc0d1a12222ffca6481916eab3cfea477b9620 | kernel.org | Patch |
| https://git.kernel.org/stable/c/384e3050a42be9085d50507b4d5f8266a588d742 | kernel.org | Patch |
| https://git.kernel.org/stable/c/67bceeb22207f1f5a402973a3a0809e5f2698f38 | kernel.org | Patch |
| https://git.kernel.org/stable/c/6e20700f8c524ac379ba8274ff5d453023b7c006 | kernel.org | Patch |
| https://git.kernel.org/stable/c/86b2b58d7c228d850c8c78e4144e6123e8ed2718 | kernel.org | Patch |
| https://git.kernel.org/stable/c/8c16c68fdbb69778f8d04f650340c3f4d1518f8e | kernel.org | Patch |
| https://git.kernel.org/stable/c/aafcbaf1159ea224528ca4075d0ba8c10ef374af | kernel.org | Patch |
| https://git.kernel.org/stable/c/f03e8583532941b07761c5429de7d50766fa3110 | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| NVD-CWE-noinfo | Insufficient Information to Classify Weakness | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 2.6.38, < 5.10.258 >= 5.11, < 5.15.209 >= 5.16, < 6.1.175 >= 6.2, < 6.6.140 >= 6.7, < 6.12.90 >= 6.13, < 6.18.32 >= 6.19, < 7.0.9 7.1 rc1 7.1 rc2 7.1 rc3 |
CPE
Remediation
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Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | kernel.org |
| Jun 10, 2026 | Initial Analysis | [email protected] |
| Jun 1, 2026 | CVE Modified | kernel.org |
| May 30, 2026 | CVE Modified | kernel.org |
| May 28, 2026 | New CVE Received | kernel.org |