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CVE: nfs: fix stack-based buffer overflow in some nfs_handler reply helper functions

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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>
This commit is contained in:
liucheng (G) 2019-08-29 13:47:40 +00:00 committed by Joe Hershberger
parent fe7288069d
commit 741a8a08eb
1 changed files with 3 additions and 0 deletions
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3
net/nfs.c
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@ -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;