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authorWolfgang Wiedmeyer <wolfgit@wiedmeyer.de>2015-10-22 21:26:58 +0200
committerWolfgang Wiedmeyer <wolfgit@wiedmeyer.de>2015-10-22 21:26:58 +0200
commit786208aedd8f75b0720e36b2ca66b3a411417301 (patch)
treee6e902ab383ca94842c8691a9e28e1a6aefc5695 /net/bluetooth/l2cap_core.c
parentb99374450c03bf5081b88995d91d34fb9b2fd040 (diff)
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merged 3.0.101 tag
Diffstat (limited to 'net/bluetooth/l2cap_core.c')
-rw-r--r--net/bluetooth/l2cap_core.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index b044c38..8d0e801 100644
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -1823,6 +1823,9 @@ static struct sk_buff *l2cap_build_cmd(struct l2cap_conn *conn,
BT_DBG("conn %p, code 0x%2.2x, ident 0x%2.2x, len %d",
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);