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Commit ed9a843c authored by Ted Wang's avatar Ted Wang
Browse files

Add length check when copy AVDTP packet 

Bug: 232023771
Test: make
Tag: #security
Ignore-AOSP-First: Security
Change-Id: I68dd78c747eeafee5190dc56d7c71e9eeed08a5b
Merged-In: I68dd78c747eeafee5190dc56d7c71e9eeed08a5b
parent 88f0414f

system/stack/avdt/avdt_msg.cc

+4 −0
Original line number Diff line number Diff line
@@ -1252,6 +1252,10 @@ BT_HDR* avdt_msg_asmbl(AvdtpCcb* p_ccb, BT_HDR* p_buf) { 
     * would have allocated smaller buffer.

     */

    p_ccb->p_rx_msg = (BT_HDR*)osi_malloc(BT_DEFAULT_BUFFER_SIZE);

    if (sizeof(BT_HDR) + p_buf->offset + p_buf->len > BT_DEFAULT_BUFFER_SIZE) {

      android_errorWriteLog(0x534e4554, "232023771");

      return NULL;

    }

    memcpy(p_ccb->p_rx_msg, p_buf, sizeof(BT_HDR) + p_buf->offset + p_buf->len);



    /* Free original buffer */