HID: wacom: handle kzalloc() allocation failure in wacom_wac_queue_flush()

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During wacom_wac_queue_flush() the code calls
kzalloc() to allocate a zero initialised buffer
which it uses as a storage buffer to get data
from the fifo via kfifo_out(). However it does not
check kzalloc() for allocation failure which returns
NULL and could potentially lead to a NULL deref.

Fix this by checking for kzalloc() failure and skipping
the current entry if allocation failure occurs.

Fixes: 5e013ad206 ("HID: wacom: Remove static WACOM_PKGLEN_MAX limit")
Signed-off-by: Qasim Ijaz <qasdev00@gmail.com>
Reviewed-by: Jason Gerecke <jason.gerecke@wacom.com>
Signed-off-by: Jiri Kosina <jkosina@suse.com>

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Qasim Ijaz 2025-03-29 00:20:03 +00:00 • committed by Jiri Kosina

parent 09d546303b

commit e1ca5f39c2

1 changed files with 7 additions and 1 deletions

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drivers/hid/wacom_sys.c

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