CVE: nfs: fix stack-based buffer overflow in some nfs_handler reply helper
functions
This patch adds a check to nfs_handler to fix buffer overflow for
CVE-2019-14197,
CVE-2019-14200, CVE-2019-14201, CVE-2019-14202, CVE-2019-14203 and
CVE-2019-14204.
Signed-off-by: Cheng Liu <liuchen...@huawei.com>
---
net/nfs.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/net/nfs.c b/net/nfs.c
index d6a7f8e..b7cf3b3 100644
--- a/net/nfs.c
+++ b/net/nfs.c
@@ -732,6 +732,9 @@ static void nfs_handler(uchar *pkt, unsigned dest, struct
in_addr sip,
debug("%s\n", __func__);
+ if (len > sizeof(struct rpc_t))
+ return;
+
if (dest != nfs_our_port)
return;
--
1.8.5.6
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