diff options
| -rw-r--r-- | fs/smb/server/smbacl.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/fs/smb/server/smbacl.c b/fs/smb/server/smbacl.c index f36ecfa94146..47c6b509cf21 100644 --- a/fs/smb/server/smbacl.c +++ b/fs/smb/server/smbacl.c @@ -1331,7 +1331,9 @@ int smb_check_perm_dacl(struct ksmbd_conn *conn, const struct path *path, break; aces_size -= ace_size; - if (ace->sid.num_subauth > SID_MAX_SUB_AUTHORITIES) + if (ace->sid.num_subauth > SID_MAX_SUB_AUTHORITIES || + ace_size < offsetof(struct smb_ace, sid) + CIFS_SID_BASE_SIZE + + sizeof(__le32) * ace->sid.num_subauth) break; if (!compare_sids(&sid, &ace->sid) || |