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.

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Linux Linux unaffected
Version Status Constraints
75388acd0cd827dc1498043daa7d1c760902cd67 affected < 1baaeb6adecb9691748c0253dab6ddd19a2b4e9e
75388acd0cd827dc1498043daa7d1c760902cd67 affected < 6ee946077607d7783ae6709a899213fc4fe08f35
75388acd0cd827dc1498043daa7d1c760902cd67 affected < 9d1bc155802943e92c57a5fb923d23edfbf0b525
75388acd0cd827dc1498043daa7d1c760902cd67 affected < fdd4e51979f42ca8b1ab7e6176b607e1caabf2a5
75388acd0cd827dc1498043daa7d1c760902cd67 affected < a035766f970bde2d4298346a31a80685be5c0205
Linux Linux affected
Version Status Constraints
2.6.24 affected —
0 unaffected < 2.6.24
6.6.140 unaffected ≤ 6.6.*
6.12.88 unaffected ≤ 6.12.*
6.18.30 unaffected ≤ 6.18.*
7.0.7 unaffected ≤ 7.0.*
7.1-rc3 unaffected ≤ *

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Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://git.kernel.org/stable/c/1baaeb6adecb9691748c0253dab6ddd19a2b4e9e cve-icon cve-icon
https://git.kernel.org/stable/c/6ee946077607d7783ae6709a899213fc4fe08f35 cve-icon cve-icon
https://git.kernel.org/stable/c/9d1bc155802943e92c57a5fb923d23edfbf0b525 cve-icon cve-icon
https://git.kernel.org/stable/c/a035766f970bde2d4298346a31a80685be5c0205 cve-icon cve-icon
https://git.kernel.org/stable/c/fdd4e51979f42ca8b1ab7e6176b607e1caabf2a5 cve-icon cve-icon
History

Thu, 28 May 2026 10:15:00 +0000

Type Values Removed Values Added
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.
Title wifi: b43legacy: enforce bounds check on firmware key index in RX path
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-05-28T09:36:18.946Z

Reserved: 2026-05-13T15:03:33.102Z

Link: CVE-2026-46163

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-05-28T10:16:31.950

Modified: 2026-05-28T10:16:31.950

Link: CVE-2026-46163

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses

No weakness.