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CVE-2026-46163

wifi: b43legacy: enforce bounds check on firmware key index in RX path

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 5.10.258, 5.15.209, 6.1.175, 6.6.140, 6.12.88, and 2 more
None on Exploit-DB, Metasploit or GitHub

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.

Timeline

  1. CVE published
  2. Record last updated

Affected versions

  • Linux Linux

    From 75388acd0cd827dc1498043daa7d1c760902cd67 · fixed in a92bd0503df2488f2cc040f329ebccff1c1934cb; From 75388acd0cd827dc1498043daa7d1c760902cd67 · fixed in df805c1d085b7a96077f0964185764c87060950d; From 75388acd0cd827dc1498043daa7d1c760902cd67 · fixed in 4242db36de99de734cc1f60e5edd86cda7e598c6; From 75388acd0cd827dc1498043daa7d1c760902cd67 · fixed in 1baaeb6adecb9691748c0253dab6ddd19a2b4e9e; From 75388acd0cd827dc1498043daa7d1c760902cd67 · fixed in 6ee946077607d7783ae6709a899213fc4fe08f35; From 75388acd0cd827dc1498043daa7d1c760902cd67 · fixed in 9d1bc155802943e92c57a5fb923d23edfbf0b525; From 75388acd0cd827dc1498043daa7d1c760902cd67 · fixed in fdd4e51979f42ca8b1ab7e6176b607e1caabf2a5; From 75388acd0cd827dc1498043daa7d1c760902cd67 · fixed in a035766f970bde2d4298346a31a80685be5c0205

  • Linux Linux

    2.6.24

  • KernelLinux

    From 2.6.24 · fixed in 5.10.258; From 5.11.0 · fixed in 5.15.209; From 5.16.0 · fixed in 6.1.175; From 6.2.0 · fixed in 6.6.140; From 6.7.0 · fixed in 6.12.88; From 6.13.0 · fixed in 6.18.30; From 6.19.0 · fixed in 7.0.7

References 8

git.kernel.org