Commit b53d7352 authored by Ning Qiang's avatar Ning Qiang Committed by Zheng Zengkai
Browse files

macintosh/adb: fix oob read in do_adb_query() function

stable inclusion
from stable-v5.10.136
commit e5b556a7b2711a39e3aa13aeff26560c17417b8b
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I5ZWNE

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=e5b556a7b2711a39e3aa13aeff26560c17417b8b



--------------------------------

commit fd97e4ad upstream.

In do_adb_query() function of drivers/macintosh/adb.c, req->data is copied
form userland. The parameter "req->data[2]" is missing check, the array
size of adb_handler[] is 16, so adb_handler[req->data[2]].original_address and
adb_handler[req->data[2]].handler_id will lead to oob read.

Cc: stable <stable@kernel.org>
Signed-off-by: default avatarNing Qiang <sohu0106@126.com>
Reviewed-by: default avatarKees Cook <keescook@chromium.org>
Reviewed-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220713153734.2248-1-sohu0106@126.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: default avatarZheng Zengkai <zhengzengkai@huawei.com>
Reviewed-by: default avatarWei Li <liwei391@huawei.com>
parent b37a8145
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