High 7.8Published May 28, 2026

CVE-2026-46163wifi: b43legacy: enforce bounds check on firmware key index in RX path

Updated under an hour ago (Oct 28, 2026, 7:50 AM ET)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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.

CVSS: 7.8 HIGH (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Modified
Record last updated: Oct 14, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 75388acd0cd827dc1498043daa7d1c760902cd67 before a92bd0503df2488f2cc040f329ebccff1c1934cb; from 75388acd0cd827dc1498043daa7d1c760902cd67 before df805c1d085b7a96077f0964185764c87060950d; 75388acd0cd827dc1498043daa7d1c760902cd67 builds before 4242db36de99de734cc1f60e5edd86cda7e598c6; 75388acd0cd827dc1498043daa7d1c760902cd67 builds before 1baaeb6adecb9691748c0253dab6ddd19a2b4e9e; 75388acd0cd827dc1498043daa7d1c760902cd67 builds before 6ee946077607d7783ae6709a899213fc4fe08f35; 75388acd0cd827dc1498043daa7d1c760902cd67 builds before 9d1bc155802943e92c57a5fb923d23edfbf0b525; from 75388acd0cd827dc1498043daa7d1c760902cd67 before fdd4e51979f42ca8b1ab7e6176b607e1caabf2a5; from 75388acd0cd827dc1498043daa7d1c760902cd67 before a035766f970bde2d4298346a31a80685be5c0205	CNA record
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem siemens:simatic_s7_1500_tm_mfp_gnu_linux_subsystem (from the name)	all versions	CISA ADP
linux linux_kernel linux:linux_kernel	from 2.6.24 before 5.10.258; from 5.11 before 5.15.209; from 5.16 before 6.1.175; from 6.2 before 6.6.140; from 6.7 before 6.12.88; from 6.13 before 6.18.30; from 6.19 before 7.0.7; 7.1; and 1 more ranges	NVD

References

References

https://git.kernel.org/stable/c/a92bd0503df2488f2cc040f329ebccff1c1934cb	patch
https://git.kernel.org/stable/c/df805c1d085b7a96077f0964185764c87060950d	patch
https://git.kernel.org/stable/c/4242db36de99de734cc1f60e5edd86cda7e598c6	patch
https://git.kernel.org/stable/c/1baaeb6adecb9691748c0253dab6ddd19a2b4e9e	patch
https://git.kernel.org/stable/c/6ee946077607d7783ae6709a899213fc4fe08f35	patch
https://git.kernel.org/stable/c/9d1bc155802943e92c57a5fb923d23edfbf0b525	patch
https://git.kernel.org/stable/c/fdd4e51979f42ca8b1ab7e6176b607e1caabf2a5	patch
https://git.kernel.org/stable/c/a035766f970bde2d4298346a31a80685be5c0205	patch
https://cert-portal.siemens.com/productcert/html/ssa-784472.html

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.