K 10
svn:author
V 3
jtl
K 8
svn:date
V 27
2018-04-20T20:16:42.133394Z
K 7
svn:log
V 679
MFC r319215:
  Fix two places in the ICMP6 code where we could dereference a NULL pointer
  in the icmp6_input() function.

  When processing an ICMP6_ECHO_REQUEST, if IP6_EXTHDR_GET fails, it will
  set nicmp6 and n to NULL. Therefore, we should condition our modification
  to nicmp6 on n being not NULL.

  And, when processing an ICMP6_WRUREQUEST in the (mode != FQDN) case, if
  m_dup_pkthdr() fails, the code will set n to NULL. However, the very next
  line dereferences n. Therefore, when m_dup_pkthdr() fails, we should
  discontinue further processing and follow the same path as when m_gethdr()
  fails.

Reported by:	clang static analyzer
Sponsored by:	Netflix, Inc.

END