tree 4f6d233ea497524be8aadf185d5d2a480b6e467c
parent 308856261df4828afbe00abbb7b226ec80555479
author Wen Huang <huangwenabc@gmail.com> 1574938264 +0800
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1580306559 +0100

libertas: Fix two buffer overflows at parsing bss descriptor

commit e5e884b42639c74b5b57dc277909915c0aefc8bb upstream.

add_ie_rates() copys rates without checking the length
in bss descriptor from remote AP.when victim connects to
remote attacker, this may trigger buffer overflow.
lbs_ibss_join_existing() copys rates without checking the length
in bss descriptor from remote IBSS node.when victim connects to
remote attacker, this may trigger buffer overflow.
Fix them by putting the length check before performing copy.

This fix addresses CVE-2019-14896 and CVE-2019-14897.
This also fix build warning of mixed declarations and code.

Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Wen Huang <huangwenabc@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>