diff options
| author | Dave Airlie <airlied@redhat.com> | 2017-04-11 07:40:42 +1000 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2017-04-11 07:40:42 +1000 |
| commit | b769fefb68cd70385d68220ae341e5a10723fbc0 (patch) | |
| tree | a2881410c9dc5a3474619d155fac981cfbd4ee8f /net/xfrm/xfrm_user.c | |
| parent | 1420f63b8207e966f54caec26d08abdc2ff37193 (diff) | |
| parent | 39da7c509acff13fc8cb12ec1bb20337c988ed36 (diff) | |
| download | linux-b769fefb68cd70385d68220ae341e5a10723fbc0.tar.bz2 | |
Backmerge tag 'v4.11-rc6' into drm-next
Linux 4.11-rc6
drm-misc needs 4.11-rc5, may as well fix conflicts with rc6.
Diffstat (limited to 'net/xfrm/xfrm_user.c')
| -rw-r--r-- | net/xfrm/xfrm_user.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c index 9705c279494b..40a8aa39220d 100644 --- a/net/xfrm/xfrm_user.c +++ b/net/xfrm/xfrm_user.c @@ -412,7 +412,14 @@ static inline int xfrm_replay_verify_len(struct xfrm_replay_state_esn *replay_es up = nla_data(rp); ulen = xfrm_replay_state_esn_len(up); - if (nla_len(rp) < ulen || xfrm_replay_state_esn_len(replay_esn) != ulen) + /* Check the overall length and the internal bitmap length to avoid + * potential overflow. */ + if (nla_len(rp) < ulen || + xfrm_replay_state_esn_len(replay_esn) != ulen || + replay_esn->bmp_len != up->bmp_len) + return -EINVAL; + + if (up->replay_window > up->bmp_len * sizeof(__u32) * 8) return -EINVAL; return 0; |