• Jouni Malinen's avatar
    cfg80211: Fix validation of AKM suites · 1b9ca027
    Jouni Malinen authored
    Incorrect variable was used in validating the akm_suites array from
    NL80211_ATTR_AKM_SUITES. In addition, there was no explicit
    validation of the array length (we only have room for
    NL80211_MAX_NR_AKM_SUITES).
    
    This can result in a buffer write overflow for stack variables with
    arbitrary data from user space. The nl80211 commands using the affected
    functionality require GENL_ADMIN_PERM, so this is only exposed to admin
    users.
    
    Cc: stable@kernel.org
    Signed-off-by: default avatarJouni Malinen <jouni@qca.qualcomm.com>
    Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
    1b9ca027
nl80211.c 183 KB