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CVE-2026-43110 is a Linux kernel vulnerability in the Broadcom brcmfmac Wi-Fi driver. The flaw is in brcmf_fweh_handle_if_event(), which validated a firmware-provided interface index before accessing the driver interface list, but still used the raw bsscfgidx value as an index into drvr->iflist[] without performing a corresponding bounds check. A malicious or malformed IF event could therefore cause the kernel to index the interface array with an invalid bsscfg value. The issue was fixed by rejecting IF events whose bsscfg index falls outside the valid range of drvr->iflist[] before the array is accessed. This is a kernel memory-safety flaw involving improper validation of an array index in Wi-Fi event handling.
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A Linux kernel brcmfmac Wi-Fi vulnerability caused by insufficient validation of bsscfg indices in interface events.
A Linux kernel vulnerability in the brcmfmac Wi-Fi component involving validation of bsscfg indices in IF events.
Linux kernel Wi-Fi brcmfmac vulnerability related to validating bsscfg indices in interface events.
A Linux kernel Wi-Fi brcmfmac vulnerability involving improper validation of bsscfg indices in IF events.
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Every observed campaign linking this CVE to a named adversary.
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Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.