diff options
| author | Luca Coelho <luciano.coelho@intel.com> | 2019-04-02 16:08:23 +0300 |
|---|---|---|
| committer | Hauke Mehrtens <hauke@hauke-m.de> | 2019-06-27 22:55:27 +0200 |
| commit | ccfdad2f499e125ce3f567b12492c176c9459927 (patch) | |
| tree | c7b9abcec91ce28fa7ba3c935914fbcce99c4b3e | |
| parent | 71394eaf9191a2f8944900d8a738c32cff3c2e5b (diff) | |
backport: check for failure when allocating ops in genetlink
We were not checking if the allocation failed in
backport_genl_register_family(), which could lead to NULL pointer
dereferences later. Fix that.
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
| -rw-r--r-- | backport/compat/backport-genetlink.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/backport/compat/backport-genetlink.c b/backport/compat/backport-genetlink.c index 885f1756..16971ec3 100644 --- a/backport/compat/backport-genetlink.c +++ b/backport/compat/backport-genetlink.c @@ -220,7 +220,11 @@ int backport_genl_register_family(struct genl_family *family) /* we append one entry to the ops to find our family pointer ... */ ops = kzalloc(sizeof(*ops) * (family->n_ops + 1), GFP_KERNEL); + if (!ops) + return -ENOMEM; + memcpy(ops, family->ops, sizeof(*ops) * family->n_ops); + /* * Remove policy to skip validation as the struct nla_policy * memory layout isn't compatible with the old version |