diff options
Diffstat (limited to 'examples')
| -rw-r--r-- | examples/device/cdc_msc/src/msc_disk.c | 11 | ||||
| -rw-r--r-- | examples/device/cdc_msc_freertos/src/msc_disk.c | 11 |
2 files changed, 18 insertions, 4 deletions
diff --git a/examples/device/cdc_msc/src/msc_disk.c b/examples/device/cdc_msc/src/msc_disk.c index d325d77fa..6fc0760b6 100644 --- a/examples/device/cdc_msc/src/msc_disk.c +++ b/examples/device/cdc_msc/src/msc_disk.c @@ -195,7 +195,7 @@ int32_t tud_msc_read10_cb(uint8_t lun, uint32_t lba, uint32_t offset, void* buff } // Check for overflow of offset + bufsize - if ( offset + bufsize > DISK_BLOCK_SIZE ) { + if ( lba * DISK_BLOCK_SIZE + offset + bufsize > DISK_BLOCK_NUM * DISK_BLOCK_SIZE ) { return -1; } @@ -223,7 +223,14 @@ int32_t tud_msc_write10_cb(uint8_t lun, uint32_t lba, uint32_t offset, uint8_t* (void) lun; // out of ramdisk - if ( lba >= DISK_BLOCK_NUM ) return -1; + if ( lba >= DISK_BLOCK_NUM ) { + return -1; + } + + // Check for overflow of offset + bufsize + if ( lba * DISK_BLOCK_SIZE + offset + bufsize > DISK_BLOCK_NUM * DISK_BLOCK_SIZE ) { + return -1; + } #ifndef CFG_EXAMPLE_MSC_READONLY uint8_t* addr = msc_disk[lba] + offset; diff --git a/examples/device/cdc_msc_freertos/src/msc_disk.c b/examples/device/cdc_msc_freertos/src/msc_disk.c index d325d77fa..6fc0760b6 100644 --- a/examples/device/cdc_msc_freertos/src/msc_disk.c +++ b/examples/device/cdc_msc_freertos/src/msc_disk.c @@ -195,7 +195,7 @@ int32_t tud_msc_read10_cb(uint8_t lun, uint32_t lba, uint32_t offset, void* buff } // Check for overflow of offset + bufsize - if ( offset + bufsize > DISK_BLOCK_SIZE ) { + if ( lba * DISK_BLOCK_SIZE + offset + bufsize > DISK_BLOCK_NUM * DISK_BLOCK_SIZE ) { return -1; } @@ -223,7 +223,14 @@ int32_t tud_msc_write10_cb(uint8_t lun, uint32_t lba, uint32_t offset, uint8_t* (void) lun; // out of ramdisk - if ( lba >= DISK_BLOCK_NUM ) return -1; + if ( lba >= DISK_BLOCK_NUM ) { + return -1; + } + + // Check for overflow of offset + bufsize + if ( lba * DISK_BLOCK_SIZE + offset + bufsize > DISK_BLOCK_NUM * DISK_BLOCK_SIZE ) { + return -1; + } #ifndef CFG_EXAMPLE_MSC_READONLY uint8_t* addr = msc_disk[lba] + offset; |