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rxrpc fixes for net-next

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Merge tag 'rxrpc-next-20221116' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs

David Howells says:

====================
rxrpc: Fix oops and missing config conditionals

The patches that were pulled into net-next previously[1] had some issues
that this patchset fixes:

 (1) Fix missing IPV6 config conditionals.

 (2) Fix an oops caused by calling udpv6_sendmsg() directly on an AF_INET
     socket.

 (3) Fix the validation of network addresses on entry to socket functions
     so that we don't allow an AF_INET6 address if we've selected an
     AF_INET transport socket.

Link: https://lore.kernel.org/r/166794587113.2389296.16484814996876530222.stgit@warthog.procyon.org.uk/ [1]
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2022-11-18 12:09:20 +00:00
commit 8cf4f8c7d9
3 changed files with 19 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
net/rxrpc/af_rxrpc.c
View File

@ -93,12 +93,11 @@ static int rxrpc_validate_address(struct rxrpc_sock *rx,
srx->transport_len > len)
return -EINVAL;
if (srx->transport.family != rx->family &&
srx->transport.family == AF_INET && rx->family != AF_INET6)
return -EAFNOSUPPORT;
switch (srx->transport.family) {
case AF_INET:
if (rx->family != AF_INET &&
rx->family != AF_INET6)
return -EAFNOSUPPORT;
if (srx->transport_len < sizeof(struct sockaddr_in))
return -EINVAL;
tail = offsetof(struct sockaddr_rxrpc, transport.sin.__pad);
@ -106,6 +105,8 @@ static int rxrpc_validate_address(struct rxrpc_sock *rx,
#ifdef CONFIG_AF_RXRPC_IPV6
case AF_INET6:
if (rx->family != AF_INET6)
return -EAFNOSUPPORT;
if (srx->transport_len < sizeof(struct sockaddr_in6))
return -EINVAL;
tail = offsetof(struct sockaddr_rxrpc, transport) +

3
net/rxrpc/local_object.c
View File

@ -33,7 +33,8 @@ static void rxrpc_encap_err_rcv(struct sock *sk, struct sk_buff *skb, int err,
{
if (ip_hdr(skb)->version == IPVERSION)
return ip_icmp_error(sk, skb, err, port, info, payload);
return ipv6_icmp_error(sk, skb, err, port, info, payload);
if (IS_ENABLED(CONFIG_AF_RXRPC_IPV6))
return ipv6_icmp_error(sk, skb, err, port, info, payload);
}
/*

18
net/rxrpc/output.c
View File

@ -18,15 +18,21 @@
extern int udpv6_sendmsg(struct sock *sk, struct msghdr *msg, size_t len);
static ssize_t do_udp_sendmsg(struct socket *sk, struct msghdr *msg, size_t len)
static ssize_t do_udp_sendmsg(struct socket *socket, struct msghdr *msg, size_t len)
{
#if IS_ENABLED(CONFIG_AF_RXRPC_IPV6)
struct sockaddr *sa = msg->msg_name;
struct sock *sk = socket->sk;
if (sa->sa_family == AF_INET6)
return udpv6_sendmsg(sk->sk, msg, len);
#endif
return udp_sendmsg(sk->sk, msg, len);
if (IS_ENABLED(CONFIG_AF_RXRPC_IPV6)) {
if (sa->sa_family == AF_INET6) {
if (sk->sk_family != AF_INET6) {
pr_warn("AF_INET6 address on AF_INET socket\n");
return -ENOPROTOOPT;
}
return udpv6_sendmsg(sk, msg, len);
}
}
return udp_sendmsg(sk, msg, len);
}
struct rxrpc_abort_buffer {