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authorliucheng (G) <liucheng32@huawei.com>2019-08-29 13:47:40 +0000
committerJoe Hershberger <joe.hershberger@ni.com>2019-09-04 11:37:19 -0500
commit741a8a08ebe5bc3ccfe3cde6c2b44ee53891af21 (patch)
tree6a96ab7b87f7bcc3414c624bd8ced071d60e2fcc /net/nfs.c
parentfe7288069d2e6659117049f7d27e261b550bb725 (diff)
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 <liucheng32@huawei.com> Reported-by: Fermín Serna <fermin@semmle.com> Acked-by: Joe Hershberger <joe.hershberger@ni.com>
Diffstat (limited to 'net/nfs.c')
-rw-r--r--net/nfs.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/net/nfs.c b/net/nfs.c
index d6a7f8e827..b7cf3b3a18 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;