Thread (18 messages) 18 messages, 12 authors, 2021-09-04

[PATCH net] net: qrtr: revert check in qrtr_endpoint_post()

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STALE1868d REVIEWED: 1 (0M)

From: Dan Carpenter <hidden>
Date: 2021-09-02 10:09:35
Also in: lkml
Subsystem: networking [general], qualcomm ipc router (qrtr) driver, the rest · Maintainers: "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Manivannan Sadhasivam, Linus Torvalds

1 review trailer.

I tried to make this check stricter as a hardenning measure but it broke
audo and wifi on these devices so revert it.

Fixes: aaa8e4922c88 ("net: qrtr: make checks in qrtr_endpoint_post() stricter")
Reported-by: John Stultz <redacted>
Signed-off-by: Dan Carpenter <redacted>
Tested-by: Srinivas Kandagatla <redacted>
---
 net/qrtr/qrtr.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/qrtr/qrtr.c b/net/qrtr/qrtr.c
index 525e3ea063b1..ec2322529727 100644
--- a/net/qrtr/qrtr.c
+++ b/net/qrtr/qrtr.c
@@ -493,7 +493,7 @@ int qrtr_endpoint_post(struct qrtr_endpoint *ep, const void *data, size_t len)
 		goto err;
 	}
 
-	if (!size || size & 3 || len != size + hdrlen)
+	if (!size || len != ALIGN(size, 4) + hdrlen)
 		goto err;
 
 	if (cb->dst_port != QRTR_PORT_CTRL && cb->type != QRTR_TYPE_DATA &&
-- 
2.20.1
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