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flow: fix incorrect padding length checking in ipv6_sanity_check

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The padding length is (packet size - ipv6 header length - ipv6 plen).  This
patch fixes incorrect padding size checking in ipv6_sanity_check.

Acked-by: William Tu <u9012063@gmail.com>
Reviewed-by: Gavin Hu <Gavin.Hu@arm.com>
Signed-off-by: Yanqin Wei <Yanqin.Wei@arm.com>
Signed-off-by: Ben Pfaff <blp@ovn.org>
This commit is contained in:
Yanqin Wei
2019-09-02 16:36:47 +08:00
committed by Ben Pfaff
parent 9e585df1f8
commit 892545b953
1 changed files with 1 additions and 1 deletions
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lib/flow.c
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@@ -699,7 +699,7 @@ ipv6_sanity_check(const struct ovs_16aligned_ip6_hdr *nh, size_t size)
return false;
}
/* Jumbo Payload option not supported yet. */
if (OVS_UNLIKELY(size - plen > UINT8_MAX)) {
if (OVS_UNLIKELY(size - (plen + IPV6_HEADER_LEN) > UINT8_MAX)) {
return false;
}