diff options
| author | [email protected] <[email protected]> | 2020-01-15 20:46:28 +0300 |
|---|---|---|
| committer | Jiri Kosina <[email protected]> | 2020-02-12 14:46:56 +0100 |
| commit | 5c02c447eaeda29d3da121a2e17b97ccaf579b51 (patch) | |
| tree | 02a1c1bedb8f91014706175750a496fddb508bfe /kernel/locking/rtmutex-debug.h | |
| parent | 84a4062632462c4320704fcdf8e99e89e94c0aba (diff) | |
HID: hiddev: Fix race in in hiddev_disconnect()
Syzbot reports that "hiddev" is used after it's free in hiddev_disconnect().
The hiddev_disconnect() function sets "hiddev->exist = 0;" so
hiddev_release() can free it as soon as we drop the "existancelock"
lock. This patch moves the mutex_unlock(&hiddev->existancelock) until
after we have finished using it.
Reported-by: [email protected]
Fixes: 7f77897ef2b6 ("HID: hiddev: fix potential use-after-free")
Suggested-by: Alan Stern <[email protected]>
Signed-off-by: Dan Carpenter <[email protected]>
Signed-off-by: Jiri Kosina <[email protected]>
Diffstat (limited to 'kernel/locking/rtmutex-debug.h')
0 files changed, 0 insertions, 0 deletions