package/network/services/dnsmasq/patches/0001-Handle-memory-allocation-failure-in-make_non_termina.patch

   1 From ea6cc338042094f8023d224e53c244da158e6499 Mon Sep 17 00:00:00 2001
   2 From: Simon Kelley <simon@thekelleys.org.uk>
   3 Date: Tue, 18 Sep 2018 23:21:17 +0100
   4 Subject: [PATCH] Handle memory allocation failure in make_non_terminals()
   5
   6 Thanks to Kristian Evensen for spotting the problem.
   7
   8 Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
   9 ---
  10  src/cache.c | 17 ++++++++++-------
  11  1 file changed, 10 insertions(+), 7 deletions(-)
  12
  13 --- a/src/cache.c
  14 +++ b/src/cache.c
  15 @@ -1360,7 +1360,7 @@ void cache_add_dhcp_entry(char *host_nam
  16  static void make_non_terminals(struct crec *source)
  17  {
  18    char *name = cache_get_name(source);
  19 -  struct crec* crecp, *tmp, **up;
  20 +  struct crec *crecp, *tmp, **up;
  21    int type = F_HOSTS | F_CONFIG;
  22  #ifdef HAVE_DHCP
  23    if (source->flags & F_DHCP)
  24 @@ -1434,12 +1434,15 @@ static void make_non_terminals(struct cr
  25  #endif
  26         crecp = whine_malloc(sizeof(struct crec));
  27
  28 -      *crecp = *source;
  29 -      crecp->flags &= ~(F_IPV4 | F_IPV6 | F_CNAME | F_DNSKEY | F_DS | F_REVERSE);
  30 -      crecp->flags |= F_NAMEP;
  31 -      crecp->name.namep = name;
  32 -
  33 -      cache_hash(crecp);
  34 +      if (crecp)
  35 +       {
  36 +         *crecp = *source;
  37 +         crecp->flags &= ~(F_IPV4 | F_IPV6 | F_CNAME | F_DNSKEY | F_DS | F_REVERSE);
  38 +         crecp->flags |= F_NAMEP;
  39 +         crecp->name.namep = name;
  40 +
  41 +         cache_hash(crecp);
  42 +       }
  43      }
  44  }
  45