CVE-2026-46122
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).
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.13%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.13% probability · 3th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-129
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/135cb49c9a42a02cceeac7b49ec03e267f7ed6d6Patch
- https://git.kernel.org/stable/c/1e9e55cf66f0fa4799f4d86ef3aaba8e606b5c14Patch
- https://git.kernel.org/stable/c/1f4f78bf8549e6ac4f04fba4176854f3a6e0c332Patch
- https://git.kernel.org/stable/c/219ba67e69e49681e48c822d6eaafb5def032f34Patch
- https://git.kernel.org/stable/c/3157ad40b084a8f3932da2641749ab45e99b933ePatch
- https://git.kernel.org/stable/c/765709720e6af9a178abc40244a8d1aa39ac4e71Patch
- https://git.kernel.org/stable/c/c3d7b90dc95020cd9282c4630e402fe224f7644ePatch
- https://git.kernel.org/stable/c/d7029879bafdac2006c67553807d122283dc6cbfPatch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.