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Commit 65b40a98 authored by Anton Vasilyev's avatar Anton Vasilyev Committed by Mauro Carvalho Chehab
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media: dm1105: Limit number of cards to avoid buffer over read 



dm1105_probe() counts number of cards at dm1105_devcount,
but missed bounds check before dereference a card array.

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: default avatarAnton Vasilyev <vasilyev@ispras.ru>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab+samsung@kernel.org>
parent 817dc4b5

drivers/media/pci/dm1105/dm1105.c

+3 −0
Original line number Diff line number Diff line
@@ -986,6 +986,9 @@ static int dm1105_probe(struct pci_dev *pdev, 
	int ret = -ENOMEM;

	int i;



	if (dm1105_devcount >= ARRAY_SIZE(card))

		return -ENODEV;



	dev = kzalloc(sizeof(struct dm1105_dev), GFP_KERNEL);

	if (!dev)

		return -ENOMEM;