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HIGHCVE-2026-43110Published Modified CNA Linux

CVE-2026-43110: wifi: brcmfmac: validate bsscfg indices in IF events

In the Linux kernel, the following vulnerability has been resolved: wifi: brcmfmac: validate bsscfg indices in IF events brcmf_fweh_handle_if_event() validates the firmware-provided interface index before it touches drvr->iflist[], but it still uses the raw bsscfgidx field as an array index without a matching range check. Reject IF events whose bsscfg index does not fit in drvr->iflist[] before indexing the interface array. [add missing wifi prefix]

Metrics

CVSS v3.1
8.8
Severity
HIGH
Fixed in
0
Affected Products
2

Fix available

01ae1e1caa428844e481231f6dbe9b4f475f1d52d304950a467d83678bd0b0f46331882e2ac23b12d3ec7437e9d11374105c2c4e47ae671537729d7e66.6.1366.12.836.18.246.19.147.09fca68c2512a362cad258e4df12a307bb2ee4b8eb427c2b05222db36d32ee141609de6128e9091bb
Affected packages
  • Linux / Linux
    < 3ec7437e9d11374105c2c4e47ae671537729d7e6 (from 2880b86859967af710c72f7d34fb421a86a71e22) · < 9fca68c2512a362cad258e4df12a307bb2ee4b8e (from 2880b86859967af710c72f7d34fb421a86a71e22) · < 1ae1e1caa428844e481231f6dbe9b4f475f1d52d (from 2880b86859967af710c72f7d34fb421a86a71e22) · < b427c2b05222db36d32ee141609de6128e9091bb (from 2880b86859967af710c72f7d34fb421a86a71e22) · < 304950a467d83678bd0b0f46331882e2ac23b12d (from 2880b86859967af710c72f7d34fb421a86a71e22)
  • Linux / Linux
    3.9
    Fixed in 0, 6.6.136, 6.12.83, 6.18.24, 6.19.14, 7.0
CVSS Vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
References