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 09:32:10 +0200 |
| commit | 7c3a5626fd5c704c8deaeedcbf837579781dc6d2 (patch) | |
| tree | 039e40b9105f330f7cc2fb1e9ea84aefce73ee58 /tools/perf/scripts/python | |
| parent | cebd9b67fe0bdbb55b45533a3d911b86bde88174 (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 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions