diff options
| author | Krzysztof Kozlowski <[email protected]> | 2023-10-13 20:41:29 +0200 |
|---|---|---|
| committer | Jakub Kicinski <[email protected]> | 2023-10-16 17:34:53 -0700 |
| commit | 7937609cd387246aed994e81aa4fa951358fba41 (patch) | |
| tree | 63070df34f7e0ad79b9e57621dabb0ae0d439b3d | |
| parent | 503930f8e113edc86f92b767efb4ea57bdffffb2 (diff) | |
| download | linux-7937609cd387246aed994e81aa4fa951358fba41.tar.gz | |
nfc: nci: fix possible NULL pointer dereference in send_acknowledge()
Handle memory allocation failure from nci_skb_alloc() (calling
alloc_skb()) to avoid possible NULL pointer dereference.
Reported-by: 黄思聪 <[email protected]>
Fixes: 391d8a2da787 ("NFC: Add NCI over SPI receive")
Cc: <[email protected]>
Signed-off-by: Krzysztof Kozlowski <[email protected]>
Reviewed-by: Simon Horman <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>
| -rw-r--r-- | net/nfc/nci/spi.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/net/nfc/nci/spi.c b/net/nfc/nci/spi.c index 0935527d1d12b5..b68150c971d0b1 100644 --- a/net/nfc/nci/spi.c +++ b/net/nfc/nci/spi.c @@ -151,6 +151,8 @@ static int send_acknowledge(struct nci_spi *nspi, u8 acknowledge) int ret; skb = nci_skb_alloc(nspi->ndev, 0, GFP_KERNEL); + if (!skb) + return -ENOMEM; /* add the NCI SPI header to the start of the buffer */ hdr = skb_push(skb, NCI_SPI_HDR_LEN); |