While processing the QCA_NL80211_VENDOR_SUBCMD_SET_TXPOWER_SCALE_DECR_DB vendor command, in which attribute QCA_WLAN_VENDOR_ATTR_TXPOWER_SCALE_DECR_DB contains fewer than 1 byte, in Android for MSM, Firefox OS for MSM, and QRD Android before 2017-08-11 a buffer overrun occurs.