CVSS 7.8 · High EPSS 0,18%
Kerentanan Out-of-bounds Write pada linux kernel. Skor CVSS 3.1 7.8 (High) menurut NVD.
In the Linux kernel, the following vulnerability has been resolved: staging: rtl8723bs: fix heap buffer overflow in rtw_cfg80211_set_wpa_ie() supplicant_ie is a 256-byte array in struct security_priv. The WPA and WPA2 IE copy paths use: memcpy(padapter->securitypriv.supplicant_ie, &pwpa[0], wpa_ielen + 2); where wpa_ielen is the raw IE length field (u8, 0-255). When a local user supplies a connect request via nl80211 with a crafted WPA IE of length 255, wpa_ielen + 2 equals 257, overflowing the 256-byte buffer by one byte into the adjacent last_mic_err_time field. rtw_parse_wpa_ie() does not prevent this: its length consistency check compares *(wpa_ie+1) against (u8)(wpa_ie_len-2), which is (u8)(255) == 255 when wpa_ie_len = 257, so the check passes silently. Add explicit bounds checks for both the WPA and WPA2 paths before the memcpy, rejecting any IE whose total size (wpa_ielen + 2) exceeds the supplicant_ie buffer.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
· uraikan di kalkulator | Vendor | Produk | Versi terdampak |
|---|---|---|
| linux | linux kernel | Versi 4.12 hingga sebelum 5.10.261 |
| linux | linux kernel | Versi 5.11 hingga sebelum 5.15.212 |
| linux | linux kernel | Versi 5.16 hingga sebelum 6.1.178 |
| linux | linux kernel | Versi 6.2 hingga sebelum 6.6.145 |
| linux | linux kernel | Versi 6.7 hingga sebelum 6.12.96 |
| linux | linux kernel | Versi 6.13 hingga sebelum 6.18.39 |
| linux | linux kernel | Versi 6.19 hingga sebelum 7.1.4 |
| linux | linux kernel | Versi 7.2 rc1 |
| linux | linux kernel | Versi 7.2 rc2 |