diff options
| author | Rygebin <kaankulahli@gmail.com> | 2017-06-20 14:29:27 +0000 |
|---|---|---|
| committer | Rygebin <kaankulahli@gmail.com> | 2017-06-20 14:29:27 +0000 |
| commit | afa9ad70f02491fbe10df2203f8f2fa42f956228 (patch) | |
| tree | b6dce4ed04f62fd443721a94ac3e7f81427e0ad1 /net/xfrm | |
| parent | 582eb92a1e8bf6c0e743774c1fb550e630715433 (diff) | |
| parent | 08d1ec9238c605a9a5cf1229fd60961efcd21ff1 (diff) | |
Diffstat (limited to 'net/xfrm')
| -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 7a70a5a5671..91a6a2903e8 100644 --- a/net/xfrm/xfrm_user.c +++ b/net/xfrm/xfrm_user.c @@ -390,7 +390,14 @@ 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; |