wifi: brcmfmac: cyw: pass PMKID to firmware if present

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Summary

CVECVE-2026-98350
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-06 09:18:28 UTC
Updated2026-10-06 09:18:28 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: wifi: brcmfmac: cyw: pass PMKID to firmware if present Zero out auth_status on initialization. Otherwise, garbage will leak from the stack to the firmware (when ssid is less than 32 bytes and/or when params->pmkid is set). Then, pass the params->pmkid to the firmware (without it, the firmware caches a garbage PMKID on successful authentication and denies a subsequent association request that includes the PMKID).

Risk And Classification

EPSS: 0.001960000 probability, percentile 0.085210000 (date 2026-10-06)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 66f909308a7c05082919ff214a0bbe2a76aa0283 c2cf589c7d546557ed60c43f2ec014279265dfbf git Not specified
CNA Linux Linux affected 66f909308a7c05082919ff214a0bbe2a76aa0283 6fba6233e9ca7718661e53555a3961c58772c21a git Not specified
CNA Linux Linux affected 66f909308a7c05082919ff214a0bbe2a76aa0283 e2de8d5eb2984416affdd9559e55f37c7f1bbf47 git Not specified
CNA Linux Linux affected 6.16 Not specified
CNA Linux Linux unaffected 6.16 semver Not specified
CNA Linux Linux unaffected 6.18.54 6.18.* semver Not specified
CNA Linux Linux unaffected 7.2.8 7.2.* semver Not specified
CNA Linux Linux unaffected 7.3-rc4 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/e2de8d5eb2984416affdd9559e55f37c7f1bbf47 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/6fba6233e9ca7718661e53555a3961c58772c21a 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/c2cf589c7d546557ed60c43f2ec014279265dfbf 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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