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HID: bigben: fix slab-out-of-bounds Write in bigben_probe
authorDongliang Mu <mudongliangabcd@gmail.com>
Fri, 6 May 2022 07:24:25 +0000 (15:24 +0800)
committerJiri Kosina <jkosina@suse.cz>
Fri, 6 May 2022 08:46:36 +0000 (10:46 +0200)
commitfc4ef9d5724973193bfa5ebed181dba6de3a56db
treed72e367f8d76596c65a45e7e6acb537b7f3bab51tree
parent1af20714fedad238362571620be0bd690ded05b6commit | diff
HID: bigben: fix slab-out-of-bounds Write in bigben_probe

There is a slab-out-of-bounds Write bug in hid-bigbenff driver.
The problem is the driver assumes the device must have an input but
some malicious devices violate this assumption.

Fix this by checking hid_device's input is non-empty before its usage.

Reported-by: syzkaller <syzkaller@googlegroups.com>
Signed-off-by: Dongliang Mu <mudongliangabcd@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
drivers/hid/hid-bigbenff.c diff | blob | blame | history
Linux 6.x block layer and io_uring tree(s)