diff options
| author | Johan Hovold <johan@kernel.org> | 2019-09-25 11:29:12 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-10-17 13:40:59 -0700 |
| commit | cd3cfbafe8eb9761950873c04c0147b40a85d29f (patch) | |
| tree | 1e345725e899574fa12dc65148d66c396be555b3 /tools/perf/scripts/python | |
| parent | d5b8fadb2a057abb735863aa9a5403c6c28ed042 (diff) | |
USB: adutux: fix use-after-free on disconnect
commit 44efc269db7929f6275a1fa927ef082e533ecde0 upstream.
The driver was clearing its struct usb_device pointer, which it used as
an inverted disconnected flag, before deregistering the character device
and without serialising against racing release().
This could lead to a use-after-free if a racing release() callback
observes the cleared pointer and frees the driver data before
disconnect() is finished with it.
This could also lead to NULL-pointer dereferences in a racing open().
Fixes: f08812d5eb8f ("USB: FIx locks and urb->status in adutux (updated)")
Cc: stable <stable@vger.kernel.org> # 2.6.24
Reported-by: syzbot+0243cb250a51eeefb8cc@syzkaller.appspotmail.com
Tested-by: syzbot+0243cb250a51eeefb8cc@syzkaller.appspotmail.com
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20190925092913.8608-1-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions