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| author | Prashanth K <quic_prashk@quicinc.com> | 2023-02-13 18:30:38 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-02-14 14:41:32 +0100 |
| commit | 5ec63fdbca604568890c577753c6f66c5b3ef0b5 (patch) | |
| tree | 3d6f4add2c406a79c571ed405b7c1e9c800a16c9 /drivers/usb/atm/Makefile | |
| parent | usb: gadget: uvc: fix missing mutex_unlock() if kstrtou8() fails (diff) | |
| download | linux-5ec63fdbca604568890c577753c6f66c5b3ef0b5.tar.xz linux-5ec63fdbca604568890c577753c6f66c5b3ef0b5.zip | |
usb: gadget: u_serial: Add null pointer check in gserial_resume
Consider a case where gserial_disconnect has already cleared
gser->ioport. And if a wakeup interrupt triggers afterwards,
gserial_resume gets called, which will lead to accessing of
gser->ioport and thus causing null pointer dereference.Add
a null pointer check to prevent this.
Added a static spinlock to prevent gser->ioport from becoming
null after the newly added check.
Fixes: aba3a8d01d62 ("usb: gadget: u_serial: add suspend resume callbacks")
Cc: stable <stable@kernel.org>
Signed-off-by: Prashanth K <quic_prashk@quicinc.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Link: https://lore.kernel.org/r/1676309438-14922-1-git-send-email-quic_prashk@quicinc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/atm/Makefile')
0 files changed, 0 insertions, 0 deletions