diff options
| author | Rodrigo Rivas Costa <rodrigorivascosta@gmail.com> | 2018-04-06 01:09:36 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-04-24 09:34:16 +0200 |
| commit | d385cc6917c4fb27f883694b5f53253a289b60c8 (patch) | |
| tree | f5cc0daa868fb02e373dcedd02d6368ad21d10f0 /crypto/ghash-generic.c | |
| parent | 1d49e2ab766df649c540959a96f1ab839471fbe8 (diff) | |
HID: hidraw: Fix crash on HIDIOCGFEATURE with a destroyed device
commit a955358d54695e4ad9f7d6489a7ac4d69a8fc711 upstream.
Doing `ioctl(HIDIOCGFEATURE)` in a tight loop on a hidraw device
and then disconnecting the device, or unloading the driver, can
cause a NULL pointer dereference.
When a hidraw device is destroyed it sets 0 to `dev->exist`.
Most functions check 'dev->exist' before doing its work, but
`hidraw_get_report()` was missing that check.
Cc: stable@vger.kernel.org
Signed-off-by: Rodrigo Rivas Costa <rodrigorivascosta@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'crypto/ghash-generic.c')
0 files changed, 0 insertions, 0 deletions