CVE-2026-46122

Summary

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxe4d6b7951812d98417feb10784e400e253caf633 < 135cb49c9a42a02cceeac7b49ec03e267f7ed6d6affected
LinuxLinuxe4d6b7951812d98417feb10784e400e253caf633 < 3157ad40b084a8f3932da2641749ab45e99b933eaffected
LinuxLinuxe4d6b7951812d98417feb10784e400e253caf633 < 765709720e6af9a178abc40244a8d1aa39ac4e71affected
LinuxLinuxe4d6b7951812d98417feb10784e400e253caf633 < c3d7b90dc95020cd9282c4630e402fe224f7644eaffected
LinuxLinuxe4d6b7951812d98417feb10784e400e253caf633 < 1e9e55cf66f0fa4799f4d86ef3aaba8e606b5c14affected
LinuxLinuxe4d6b7951812d98417feb10784e400e253caf633 < d7029879bafdac2006c67553807d122283dc6cbfaffected
LinuxLinuxe4d6b7951812d98417feb10784e400e253caf633 < 219ba67e69e49681e48c822d6eaafb5def032f34affected
LinuxLinuxe4d6b7951812d98417feb10784e400e253caf633 < 1f4f78bf8549e6ac4f04fba4176854f3a6e0c332affected
LinuxLinux2.6.24affected
LinuxLinux0 < 2.6.24unaffected
LinuxLinux5.10.258 <= 5.10.*unaffected
LinuxLinux5.15.209 <= 5.15.*unaffected
LinuxLinux6.1.175 <= 6.1.*unaffected
LinuxLinux6.6.140 <= 6.6.*unaffected
LinuxLinux6.12.88 <= 6.12.*unaffected
LinuxLinux6.18.30 <= 6.18.*unaffected
LinuxLinux7.0.7 <= 7.0.*unaffected
LinuxLinux7.1 <= *unaffected

Weaknesses

References