diff options
| author | Vamsi Krishna Samavedam <vskrishn@codeaurora.org> | 2020-11-30 12:34:53 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-12-11 13:36:44 +0100 |
| commit | b0e4a1bc9fbef3fb9e2f793b6236ac0151687c00 (patch) | |
| tree | 54bd8a5afdda511844aa35859c15bcc2f71c34c6 /tools/perf/scripts/python | |
| parent | bb7b26278b384dad1423101dc69157b63968ed1c (diff) | |
usb: gadget: f_fs: Use local copy of descriptors for userspace copy
commit a4b98a7512f18534ce33a7e98e49115af59ffa00 upstream.
The function may be unbound causing the ffs_ep and its descriptors
to be freed while userspace is in the middle of an ioctl requesting
the same descriptors. Avoid dangling pointer reference by first
making a local copy of desctiptors before releasing the spinlock.
Fixes: c559a3534109 ("usb: gadget: f_fs: add ioctl returning ep descriptor")
Reviewed-by: Peter Chen <peter.chen@nxp.com>
Signed-off-by: Vamsi Krishna Samavedam <vskrishn@codeaurora.org>
Signed-off-by: Jack Pham <jackp@codeaurora.org>
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20201130203453.28154-1-jackp@codeaurora.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions