CVE-2026-46163
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.
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: 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 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/1baaeb6adecb9691748c0253dab6ddd19a2b4e9ePatch
- https://git.kernel.org/stable/c/4242db36de99de734cc1f60e5edd86cda7e598c6Patch
- https://git.kernel.org/stable/c/6ee946077607d7783ae6709a899213fc4fe08f35Patch
- https://git.kernel.org/stable/c/9d1bc155802943e92c57a5fb923d23edfbf0b525Patch
- https://git.kernel.org/stable/c/a035766f970bde2d4298346a31a80685be5c0205Patch
- https://git.kernel.org/stable/c/a92bd0503df2488f2cc040f329ebccff1c1934cbPatch
- https://git.kernel.org/stable/c/df805c1d085b7a96077f0964185764c87060950dPatch
- https://git.kernel.org/stable/c/fdd4e51979f42ca8b1ab7e6176b607e1caabf2a5Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.