CVE-2026-46122 Details
Description
In the Linux kernel, the following vulnerability has been resolved: wifi: b43: enforce bounds check on firmware key index in b43_rx() The firmware-controlled key index in b43_rx() can exceed the dev->key[] array size (58 entries). The existing B43_WARN_ON is non-enforcing in production builds, allowing an out-of-bounds read. Make the B43_WARN_ON check enforcing by dropping the frame when the firmware returns an invalid key index.
A vulnerability in the Linux kernel's B43 wireless driver allows for an out-of-bounds read due to insufficient bounds checking on firmware-controlled key indices. The issue arises in the 'b43_rx()' function, where the key index can exceed the size of the key array, which has 58 entries. Although a warning exists, it is not enforced in production, leaving room for exploitation. The vulnerability has been addressed by making the warning check mandatory, ensuring that frames are dropped when an invalid key index is received from the firmware.
Users can upgrade to the latest version of the Linux kernel where this vulnerability has been fixed. Instructions for downloading the patched 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/135cb49c9a42a02cceeac7b49ec03e267f7ed6d6 | kernel.org | Patch |
| https://git.kernel.org/stable/c/1e9e55cf66f0fa4799f4d86ef3aaba8e606b5c14 | kernel.org | Patch |
| https://git.kernel.org/stable/c/1f4f78bf8549e6ac4f04fba4176854f3a6e0c332 | kernel.org | Patch |
| https://git.kernel.org/stable/c/219ba67e69e49681e48c822d6eaafb5def032f34 | kernel.org | Patch |
| https://git.kernel.org/stable/c/3157ad40b084a8f3932da2641749ab45e99b933e | kernel.org | Patch |
| https://git.kernel.org/stable/c/765709720e6af9a178abc40244a8d1aa39ac4e71 | kernel.org | Patch |
| https://git.kernel.org/stable/c/c3d7b90dc95020cd9282c4630e402fe224f7644e | kernel.org | Patch |
| https://git.kernel.org/stable/c/d7029879bafdac2006c67553807d122283dc6cbf | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-129 | Improper Validation of Array Index | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 2.6.24, < 5.10.258 >= 5.11, < 5.15.209 >= 5.16, < 6.1.175 >= 6.2, < 6.6.140 >= 6.7, < 6.12.88 >= 6.13, < 6.18.30 >= 6.19, < 7.0.7 7.1 rc1 7.1 rc2 |
CPE
Remediation
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Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 24, 2026 | Initial Analysis | [email protected] |
| Jun 17, 2026 | CVE Modified | kernel.org |
| Jun 1, 2026 | CVE Modified | kernel.org |
| May 28, 2026 | New CVE Received | kernel.org |