ipv6: Check attribute length for RTA_GATEWAY in multipath route

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commit 4619bcf913 upstream.

Commit referenced in the Fixes tag used nla_memcpy for RTA_GATEWAY as
does the current nla_get_in6_addr. nla_memcpy protects against accessing
memory greater than what is in the attribute, but there is no check
requiring the attribute to have an IPv6 address. Add it.

Fixes: 51ebd31815 ("ipv6: add support of equal cost multipath (ECMP)")
Signed-off-by: David Ahern <dsahern@kernel.org>
Cc: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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David Ahern 2021-12-30 17:36:33 -07:00 • committed by Greg Kroah-Hartman

parent bb471784ca

commit 00e8b9f313

1 changed files with 20 additions and 1 deletions

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net/ipv6/route.c

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