CVE-2026-64446

*** Pendiente de traducción *** In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> staging: rtl8723bs: fix heap buffer overflow in rtw_cfg80211_set_wpa_ie()<br /> <br /> supplicant_ie is a 256-byte array in struct security_priv. The WPA and<br /> WPA2 IE copy paths use:<br /> <br /> memcpy(padapter-&gt;securitypriv.supplicant_ie, &amp;pwpa[0], wpa_ielen + 2);<br /> <br /> where wpa_ielen is the raw IE length field (u8, 0-255). When a local user<br /> supplies a connect request via nl80211 with a crafted WPA IE of length 255,<br /> wpa_ielen + 2 equals 257, overflowing the 256-byte buffer by one byte into<br /> the adjacent last_mic_err_time field.<br /> <br /> rtw_parse_wpa_ie() does not prevent this: its length consistency check<br /> compares *(wpa_ie+1) against (u8)(wpa_ie_len-2), which is (u8)(255) == 255<br /> when wpa_ie_len = 257, so the check passes silently.<br /> <br /> Add explicit bounds checks for both the WPA and WPA2 paths before the<br /> memcpy, rejecting any IE whose total size (wpa_ielen + 2) exceeds the<br /> supplicant_ie buffer.