diff options
| -rw-r--r-- | examples/device/cdc_msc_freertos/src/msc_disk.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/examples/device/cdc_msc_freertos/src/msc_disk.c b/examples/device/cdc_msc_freertos/src/msc_disk.c index d2f8628f1..f48d976f2 100644 --- a/examples/device/cdc_msc_freertos/src/msc_disk.c +++ b/examples/device/cdc_msc_freertos/src/msc_disk.c @@ -191,7 +191,9 @@ int32_t tud_msc_read10_cb(uint8_t lun, uint32_t lba, uint32_t offset, void* buff // out of ramdisk if ( lba >= DISK_BLOCK_NUM ) return -1; - + // Check for overflow of offset + bufsize + if ( offset + bufsize >= DISK_BLOCK_SIZE ) return -1; + uint8_t const* addr = msc_disk[lba] + offset; memcpy(buffer, addr, bufsize); |