CVE-2026-46163
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.
Affected versions
Linux kernel versions
2.6.24
and later are affected. Fixed in
5.10.258,
5.15.209,
6.1.175,
6.6.140,
6.12.88,
6.18.30,
7.0.7,
7.1-rc3
and their respective stable series.
References
The following references provide additional information about CVE-2026-46163 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.
-
PatchKernel patch commithttps://git.kernel.org/stable/c/1baaeb6adecb9691748c0253dab6ddd19a2b4e9e
-
PatchKernel patch commithttps://git.kernel.org/stable/c/4242db36de99de734cc1f60e5edd86cda7e598c6
-
PatchKernel patch commithttps://git.kernel.org/stable/c/6ee946077607d7783ae6709a899213fc4fe08f35
Frequently asked questions
-
What is CVE-2026-46163?
CVE-2026-46163 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 2.6.24 onward and has been patched in 5.10.258, 5.15.209, 6.1.175 and others. CVE-2026-46163 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
-
Is there a patch available for CVE-2026-46163?
Yes — CVE-2026-46163 has been patched. Fixed versions include 5.10.258, 5.15.209, 6.1.175 and others. If you are running Linux kernel 2.6.24 or later up to the fix versions, apply the relevant patch for your kernel branch.
-
Is CVE-2026-46163 actively exploited?
No — CVE-2026-46163 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.