CVE-2026-46163

Summary

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux75388acd0cd827dc1498043daa7d1c760902cd67 < a92bd0503df2488f2cc040f329ebccff1c1934cbaffected
LinuxLinux75388acd0cd827dc1498043daa7d1c760902cd67 < df805c1d085b7a96077f0964185764c87060950daffected
LinuxLinux75388acd0cd827dc1498043daa7d1c760902cd67 < 4242db36de99de734cc1f60e5edd86cda7e598c6affected
LinuxLinux75388acd0cd827dc1498043daa7d1c760902cd67 < 1baaeb6adecb9691748c0253dab6ddd19a2b4e9eaffected
LinuxLinux75388acd0cd827dc1498043daa7d1c760902cd67 < 6ee946077607d7783ae6709a899213fc4fe08f35affected
LinuxLinux75388acd0cd827dc1498043daa7d1c760902cd67 < 9d1bc155802943e92c57a5fb923d23edfbf0b525affected
LinuxLinux75388acd0cd827dc1498043daa7d1c760902cd67 < fdd4e51979f42ca8b1ab7e6176b607e1caabf2a5affected
LinuxLinux75388acd0cd827dc1498043daa7d1c760902cd67 < a035766f970bde2d4298346a31a80685be5c0205affected
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