CVE-2026-43110
HighCVSS 8.8Exploitation Probability (EPSS)
Low risk18th percentile - higher than 18% of all known CVEs
Summary
W jądrze Linuxa rozwiązano podatność związaną z walidacją indeksów bsscfg w zdarzeniach IF. Funkcja brcmf_fweh_handle_if_event() sprawdza indeks interfejsu dostarczony przez oprogramowanie układowe, ale nadal używa surowego pola bsscfgidx jako indeksu tablicy bez odpowiedniego sprawdzenia zakresu.
Risk Assessment
Brak odpowiedniego sprawdzenia zakresu indeksu może prowadzić do nieautoryzowanego dostępu do pamięci, co stwarza ryzyko destabilizacji systemu lub wykonania złośliwego kodu.
Recommendation
Zaleca się aktualizację jądra Linux do najnowszej wersji, aby zapewnić poprawne walidacje indeksów bsscfg w zdarzeniach IF oraz zminimalizować ryzyko związane z tą podatnością.
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Original NVD description (English source)
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]
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

