High 7.8Published May 28, 2026

CVE-2026-46122wifi: b43: enforce bounds check on firmware key index in b43_rx()

Updated under an hour ago (Oct 27, 2026, 2:10 PM ET)

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Exploited in the last 30 days

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.

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: Undergoing Analysis
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 e4d6b7951812d98417feb10784e400e253caf633 before 135cb49c9a42a02cceeac7b49ec03e267f7ed6d6; from e4d6b7951812d98417feb10784e400e253caf633 before 3157ad40b084a8f3932da2641749ab45e99b933e; from e4d6b7951812d98417feb10784e400e253caf633 before 765709720e6af9a178abc40244a8d1aa39ac4e71; from e4d6b7951812d98417feb10784e400e253caf633 before c3d7b90dc95020cd9282c4630e402fe224f7644e; from e4d6b7951812d98417feb10784e400e253caf633 before 1e9e55cf66f0fa4799f4d86ef3aaba8e606b5c14; from e4d6b7951812d98417feb10784e400e253caf633 before d7029879bafdac2006c67553807d122283dc6cbf; from e4d6b7951812d98417feb10784e400e253caf633 before 219ba67e69e49681e48c822d6eaafb5def032f34; from e4d6b7951812d98417feb10784e400e253caf633 before 1f4f78bf8549e6ac4f04fba4176854f3a6e0c332	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/135cb49c9a42a02cceeac7b49ec03e267f7ed6d6	patch
https://git.kernel.org/stable/c/3157ad40b084a8f3932da2641749ab45e99b933e	patch
https://git.kernel.org/stable/c/765709720e6af9a178abc40244a8d1aa39ac4e71	patch
https://git.kernel.org/stable/c/c3d7b90dc95020cd9282c4630e402fe224f7644e	patch
https://git.kernel.org/stable/c/1e9e55cf66f0fa4799f4d86ef3aaba8e606b5c14	patch
https://git.kernel.org/stable/c/d7029879bafdac2006c67553807d122283dc6cbf	patch
https://git.kernel.org/stable/c/219ba67e69e49681e48c822d6eaafb5def032f34	patch
https://git.kernel.org/stable/c/1f4f78bf8549e6ac4f04fba4176854f3a6e0c332	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.