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). 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.
Affected versions
Linux kernel versions
2.6.24
and later are affected. Fixed in
5.10.258,
5.15.209,
6.1.175,
6.6.140,
6.12.88,
6.18.30,
7.0.7,
7.1-rc3
and their respective stable series.
References
The following references provide additional information about CVE-2026-46122 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.
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PatchKernel patch commithttps://git.kernel.org/stable/c/135cb49c9a42a02cceeac7b49ec03e267f7ed6d6
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PatchKernel patch commithttps://git.kernel.org/stable/c/1e9e55cf66f0fa4799f4d86ef3aaba8e606b5c14
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PatchKernel patch commithttps://git.kernel.org/stable/c/1f4f78bf8549e6ac4f04fba4176854f3a6e0c332
Frequently asked questions
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What is CVE-2026-46122?
CVE-2026-46122 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 2.6.24 onward and has been patched in 5.10.258, 5.15.209, 6.1.175 and others. CVE-2026-46122 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2026-46122?
Yes — CVE-2026-46122 has been patched. Fixed versions include 5.10.258, 5.15.209, 6.1.175 and others. If you are running Linux kernel 2.6.24 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-46122 actively exploited?
No — CVE-2026-46122 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.