| From e8e602f4a4b2aacfb3da32bb8a838be15ea70e7b Mon Sep 17 00:00:00 2001 |
| From: "liucheng (G)" <liucheng32@huawei.com> |
| Date: Thu, 29 Aug 2019 13:47:33 +0000 |
| Subject: [PATCH 5/9] CVE: net: fix unbounded memcpy of UDP packet |
| MIME-Version: 1.0 |
| Content-Type: text/plain; charset=UTF-8 |
| Content-Transfer-Encoding: 8bit |
| |
| This patch adds a check to udp_len to fix unbounded memcpy for |
| CVE-2019-14192, CVE-2019-14193 and CVE-2019-14199. |
| |
| Signed-off-by: Cheng Liu <liucheng32@huawei.com> |
| Reviewed-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com> |
| Reported-by: Fermín Serna <fermin@semmle.com> |
| Acked-by: Joe Hershberger <joe.hershberger@ni.com> |
| |
| Upstream-Status: Backport[http://git.denx.de/?p=u-boot.git;a=commit; |
| h=fe7288069d2e6659117049f7d27e261b550bb725] |
| |
| CVE: CVE-2019-14192, CVE-2019-14193 and CVE-2019-14199 |
| |
| Signed-off-by: Meng Li <Meng.Li@windriver.com> |
| --- |
| net/net.c | 3 +++ |
| 1 file changed, 3 insertions(+) |
| |
| diff --git a/net/net.c b/net/net.c |
| index 58b0417cbe..38105f1142 100644 |
| --- a/net/net.c |
| +++ b/net/net.c |
| @@ -1252,6 +1252,9 @@ void net_process_received_packet(uchar *in_packet, int len) |
| return; |
| } |
| |
| + if (ntohs(ip->udp_len) < UDP_HDR_SIZE || ntohs(ip->udp_len) > ntohs(ip->ip_len)) |
| + return; |
| + |
| debug_cond(DEBUG_DEV_PKT, |
| "received UDP (to=%pI4, from=%pI4, len=%d)\n", |
| &dst_ip, &src_ip, len); |
| -- |
| 2.17.1 |
| |