Description

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.

References 8

• git.kernel.org https://git.kernel.org/stable/c/135cb49c9a42a02cceeac7b49ec03e267f7ed6d6
• git.kernel.org https://git.kernel.org/stable/c/1e9e55cf66f0fa4799f4d86ef3aaba8e606b5c14
• git.kernel.org https://git.kernel.org/stable/c/1f4f78bf8549e6ac4f04fba4176854f3a6e0c332
• git.kernel.org https://git.kernel.org/stable/c/219ba67e69e49681e48c822d6eaafb5def032f34
• git.kernel.org https://git.kernel.org/stable/c/3157ad40b084a8f3932da2641749ab45e99b933e
• git.kernel.org https://git.kernel.org/stable/c/765709720e6af9a178abc40244a8d1aa39ac4e71
• git.kernel.org https://git.kernel.org/stable/c/c3d7b90dc95020cd9282c4630e402fe224f7644e
• git.kernel.org https://git.kernel.org/stable/c/d7029879bafdac2006c67553807d122283dc6cbf

Remediation