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CHG: added extra out-of-bounds check when downloading data from device.

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This commit is contained in:
iceman1001 2018-04-27 12:36:53 +02:00
parent 98f0e9a284
commit c7067d0057
1 changed files with 5 additions and 0 deletions

5
client/cmdmain.c
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@ -236,6 +236,11 @@ void UsbCommandReceived(UsbCommand* _ch) {
uint32_t len = MIN(c->arg[1], sample_buf_size);
//uint32_t tracelen = c->arg[2];
// extended bounds check.
if ( offset + len > sample_buf_size ) {
PrintAndLogEx(FAILED, "ERROR: Out of bounds when downloading from device, offset %u | len %u | total len %u > sample_buf_size %u", offset, len, offset+len, sample_buf_size);
break;
}
//printf("SAMPLE_BUF_SIZE %u | adjusted len %u | offset %u\n", sample_buf_size, len, offset);
memcpy( sample_buf + offset, c->d.asBytes, len);