Commit c61a7d10efbd187ab9bb54871238ebd1dfcacd44
Committed by
David S. Miller
David S. Miller
1 parent
0773192b0f
Exists in
master
and in
39 other branches
[IPV6]: ipv6_addr_type() doesn't know about RFC4193 addresses.
ipv6_addr_type() doesn't check for 'Unique Local IPv6 Unicast Addresses' (RFC4193) and returns IPV6_ADDR_RESERVED for that range. SCTP uses this function and will fail bind() and connect() calls that use RFC4193 addresses, SCTP will also ignore inbound connections from RFC4193 addresses if listening on IPV6_ADDR_ANY. There may be other users of ipv6_addr_type() that could also have problems. Signed-off-by: Dave Johnson <djohnson@sw.starentnetworks.com> Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Showing 1 changed file with 3 additions and 0 deletions Side-by-side Diff
net/ipv6/addrconf_core.c
| ... | ... | @@ -50,6 +50,9 @@ |
| 50 | 50 | if ((st & htonl(0xFFC00000)) == htonl(0xFEC00000)) |
| 51 | 51 | return (IPV6_ADDR_SITELOCAL | IPV6_ADDR_UNICAST | |
| 52 | 52 | IPV6_ADDR_SCOPE_TYPE(IPV6_ADDR_SCOPE_SITELOCAL)); /* addr-select 3.1 */ |
| 53 | + if ((st & htonl(0xFE000000)) == htonl(0xFC000000)) | |
| 54 | + return (IPV6_ADDR_UNICAST | | |
| 55 | + IPV6_ADDR_SCOPE_TYPE(IPV6_ADDR_SCOPE_GLOBAL)); /* RFC 4193 */ | |
| 53 | 56 | |
| 54 | 57 | if ((addr->s6_addr32[0] | addr->s6_addr32[1]) == 0) { |
| 55 | 58 | if (addr->s6_addr32[2] == 0) { |