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-rw-r--r--block.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/block.c b/block.c
index acb70fde3d..7a90a1b25e 100644
--- a/block.c
+++ b/block.c
@@ -2588,6 +2588,10 @@ static int bdrv_check_byte_request(BlockDriverState *bs, int64_t offset,
static int bdrv_check_request(BlockDriverState *bs, int64_t sector_num,
int nb_sectors)
{
+ if (nb_sectors > INT_MAX / BDRV_SECTOR_SIZE) {
+ return -EIO;
+ }
+
return bdrv_check_byte_request(bs, sector_num * BDRV_SECTOR_SIZE,
nb_sectors * BDRV_SECTOR_SIZE);
}