CVE-2026-46163 Details
Description
In the Linux kernel, the following vulnerability has been resolved: wifi: b43legacy: enforce bounds check on firmware key index in RX path Same fix as b43: the firmware-controlled key index in b43legacy_rx() can exceed dev->max_nr_keys. The existing B43legacy_WARN_ON is non-enforcing in production builds, allowing an out-of-bounds read of dev->key[]. Make the check enforcing by dropping the frame for invalid indices.
A vulnerability in the Linux kernel's b43legacy wireless driver allows for an out-of-bounds read of firmware-controlled key indices. In the b43legacy_rx() function, the key index can exceed the maximum number of keys allowed, leading to the potential reading of invalid memory. This issue arises because the existing warning mechanism does not enforce bounds checks in production builds. The vulnerability has been addressed by implementing a mandatory check that discards frames with invalid indices.
Users can upgrade to the latest version of the Linux kernel where this vulnerability has been fixed. Instructions for downloading the patched version are available 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/1baaeb6adecb9691748c0253dab6ddd19a2b4e9e | kernel.org | Patch |
| https://git.kernel.org/stable/c/4242db36de99de734cc1f60e5edd86cda7e598c6 | kernel.org | Patch |
| https://git.kernel.org/stable/c/6ee946077607d7783ae6709a899213fc4fe08f35 | kernel.org | Patch |
| https://git.kernel.org/stable/c/9d1bc155802943e92c57a5fb923d23edfbf0b525 | kernel.org | Patch |
| https://git.kernel.org/stable/c/a035766f970bde2d4298346a31a80685be5c0205 | kernel.org | Patch |
| https://git.kernel.org/stable/c/a92bd0503df2488f2cc040f329ebccff1c1934cb | kernel.org | Patch |
| https://git.kernel.org/stable/c/df805c1d085b7a96077f0964185764c87060950d | kernel.org | Patch |
| https://git.kernel.org/stable/c/fdd4e51979f42ca8b1ab7e6176b607e1caabf2a5 | 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 17, 2026 | CVE Modified | kernel.org |
| Jun 10, 2026 | Initial Analysis | [email protected] |
| Jun 1, 2026 | CVE Modified | kernel.org |
| May 28, 2026 | New CVE Received | kernel.org |