diff options
Diffstat (limited to 'net/bluetooth/l2cap_core.c')
| -rw-r--r-- | net/bluetooth/l2cap_core.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c index 24bee07ee4ce..68843a28a7af 100644 --- a/net/bluetooth/l2cap_core.c +++ b/net/bluetooth/l2cap_core.c @@ -2852,6 +2852,9 @@ static struct sk_buff *l2cap_build_cmd(struct l2cap_conn *conn, u8 code, BT_DBG("conn %p, code 0x%2.2x, ident 0x%2.2x, len %u", conn, code, ident, dlen); + if (conn->mtu < L2CAP_HDR_SIZE + L2CAP_CMD_HDR_SIZE) + return NULL; + len = L2CAP_HDR_SIZE + L2CAP_CMD_HDR_SIZE + dlen; count = min_t(unsigned int, conn->mtu, len); @@ -4330,7 +4333,7 @@ static inline int l2cap_information_rsp(struct l2cap_conn *conn, struct l2cap_info_rsp *rsp = (struct l2cap_info_rsp *) data; u16 type, result; - if (cmd_len != sizeof(*rsp)) + if (cmd_len < sizeof(*rsp)) return -EPROTO; type = __le16_to_cpu(rsp->type); |