6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
commit 110b43ef05342d5a11284cc8b21582b698b4ef1c upstream.
The "pipe" variable is a u8 which comes from the network. If it's more
than 127, then it results in memory corruption in the caller,
nci_hci_connect_gate().
Cc: stable@xxxxxxxxxxxxxxx
Fixes: a1b0b9415817 ("NFC: nci: Create pipe on specific gate in nci_hci_connect_gate")
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Reviewed-by: Simon Horman <horms@xxxxxxxxxx>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx>
Link: https://patch.msgid.link/bcf5453b-7204-4297-9c20-4d8c7dacf586@stanley.mountain
Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
net/nfc/nci/hci.c | 2 ++
1 file changed, 2 insertions(+)
--- a/net/nfc/nci/hci.c
+++ b/net/nfc/nci/hci.c
@@ -542,6 +542,8 @@ static u8 nci_hci_create_pipe(struct nci
pr_debug("pipe created=%d\n", pipe);
+ if (pipe >= NCI_HCI_MAX_PIPES)
+ pipe = NCI_HCI_INVALID_PIPE;
return pipe;
}
