From: "Philippe Mathieu-Daudé" <philmd@redhat.com>
To: qemu-devel@nongnu.org
Cc: "Laurent Vivier" <lvivier@redhat.com>,
"Thomas Huth" <thuth@redhat.com>,
"Dmitry Fleytman" <dmitry.fleytman@gmail.com>,
"Jason Wang" <jasowang@redhat.com>, "Li Qiang" <liq3ea@gmail.com>,
"Alexander Bulekov" <alxndr@bu.edu>,
"Paolo Bonzini" <pbonzini@redhat.com>,
"Miroslav Rezanina" <mrezanin@redhat.com>,
"Philippe Mathieu-Daudé" <philmd@redhat.com>,
"Stefano Garzarella" <sgarzare@redhat.com>
Subject: [PATCH v4 5/6] net/eth: Remove now useless size check
Date: Tue, 9 Mar 2021 19:27:08 +0100 [thread overview]
Message-ID: <20210309182709.810955-6-philmd@redhat.com> (raw)
In-Reply-To: <20210309182709.810955-1-philmd@redhat.com>
In the previous commit we checked there is enough room
for a ip6_ext_hdr_routing in the buffer.
The ip6_ext_hdr_routing structure starts with a ip6_ext_hdr,
so we already checked that input_size is big enough for a
ip6_ext_hdr :) Remove that now useless check.
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
---
net/eth.c | 4 ----
1 file changed, 4 deletions(-)
diff --git a/net/eth.c b/net/eth.c
index f0c8dfe8df7..e984edcfb0b 100644
--- a/net/eth.c
+++ b/net/eth.c
@@ -416,10 +416,6 @@ _eth_get_rss_ex_dst_addr(const struct iovec *pkt, int pkt_frags,
if ((rthdr->rtype == 2) && (rthdr->segleft == 1)) {
size_t bytes_read;
- if (input_size < ext_hdr_offset + sizeof(*ext_hdr)) {
- return false;
- }
-
bytes_read = iov_to_buf(pkt, pkt_frags,
ext_hdr_offset + sizeof(*ext_hdr),
dst_addr, sizeof(*dst_addr));
--
2.26.2
next prev parent reply other threads:[~2021-03-09 20:10 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-09 18:27 [PATCH v4 0/6] net/eth: Fix stack-buffer-overflow in _eth_get_rss_ex_dst_addr() Philippe Mathieu-Daudé
2021-03-09 18:27 ` [PATCH v4 1/6] net/eth: Simplify _eth_get_rss_ex_dst_addr() Philippe Mathieu-Daudé
2021-03-09 18:27 ` [PATCH v4 2/6] net/eth: Better describe _eth_get_rss_ex_dst_addr's offset argument Philippe Mathieu-Daudé
2021-03-10 8:41 ` Stefano Garzarella
2021-03-09 18:27 ` [PATCH v4 3/6] net/eth: Initialize input_size variable earlier Philippe Mathieu-Daudé
2021-03-10 8:41 ` Stefano Garzarella
2021-03-09 18:27 ` [PATCH v4 4/6] net/eth: Check rt_hdr size before casting to ip6_ext_hdr Philippe Mathieu-Daudé
2021-03-10 9:05 ` Stefano Garzarella
2021-03-10 9:35 ` Stefano Garzarella
2021-03-10 9:36 ` Miroslav Rezanina
2021-03-10 12:34 ` Philippe Mathieu-Daudé
2021-03-09 18:27 ` Philippe Mathieu-Daudé [this message]
2021-03-09 18:27 ` [PATCH v4 6/6] net/eth: Return earlier in _eth_get_rss_ex_dst_addr() Philippe Mathieu-Daudé
2021-03-10 9:32 ` Stefano Garzarella
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