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commit 5182c2cf2a9bfb7f066ef0bdd2bb6330b94dd74e upstream.
Fix another NULL-pointer dereference at open should a malicious device
lack an interrupt-in endpoint.
Note that the driver has a broken check for an interrupt-in endpoint
which means that an interrupt URB has never even been submitted.
Fixes: 3f5429746d91 ("USB: Moschip 7840 USB-Serial Driver")
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Willy Tarreau <w@1wt.eu>
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commit 5c75633ef751dd4cd8f443dc35152c1ae563162e upstream.
Fix NULL-pointer dereference in open() should the device lack the
expected endpoints:
Unable to handle kernel NULL pointer dereference at virtual address 00000030
...
PC is at mos7840_open+0x88/0x8dc [mos7840]
Note that we continue to treat the interrupt-in endpoint as optional for
now.
Fixes: 3f5429746d91 ("USB: Moschip 7840 USB-Serial Driver")
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Willy Tarreau <w@1wt.eu>
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commit 3b7c7e52efda0d4640060de747768360ba70a7c0 upstream.
There is an allocation with GFP_KERNEL flag in mos7840_write(),
while it may be called from interrupt context.
Follow-up for commit 191252837626 ("USB: kobil_sct: fix non-atomic
allocation in write path")
Found by Linux Driver Verification project (linuxtesting.org).
Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Willy Tarreau <w@1wt.eu>
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