* [PATCH] missing copy_from_user check in comx_proto_lapb driver
@ 2003-08-11 15:59 davej
0 siblings, 0 replies; only message in thread
From: davej @ 2003-08-11 15:59 UTC (permalink / raw)
To: torvalds; +Cc: linux-kernel
diff -urpN --exclude-from=/home/davej/.exclude bk-linus/drivers/net/wan/comx-proto-lapb.c linux-2.5/drivers/net/wan/comx-proto-lapb.c
--- bk-linus/drivers/net/wan/comx-proto-lapb.c 2003-05-20 18:41:21.000000000 +0100
+++ linux-2.5/drivers/net/wan/comx-proto-lapb.c 2003-07-13 06:04:34.000000000 +0100
@@ -232,7 +232,10 @@ static int comxlapb_write_proc(struct fi
return -ENOMEM;
}
- copy_from_user(page, buffer, count);
+ if (copy_from_user(page, buffer, count)) {
+ free_page((unsigned long)page);
+ return -EFAULT;
+ }
if (*(page + count - 1) == '\n') {
*(page + count - 1) = 0;
}
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2003-08-11 15:59 [PATCH] missing copy_from_user check in comx_proto_lapb driver davej
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