diff options
| -rw-r--r-- | hw/misc/ivshmem.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/hw/misc/ivshmem.c b/hw/misc/ivshmem.c index e7224b9528..3787398c19 100644 --- a/hw/misc/ivshmem.c +++ b/hw/misc/ivshmem.c @@ -34,6 +34,7 @@ #define PCI_VENDOR_ID_IVSHMEM PCI_VENDOR_ID_REDHAT_QUMRANET #define PCI_DEVICE_ID_IVSHMEM 0x1110 +#define IVSHMEM_MAX_PEERS G_MAXUINT16 #define IVSHMEM_IOEVENTFD 0 #define IVSHMEM_MSI 1 @@ -421,8 +422,8 @@ static int increase_dynamic_storage(IVShmemState *s, int new_min_size) int j, old_nb_alloc; - /* check for integer overflow */ - if (new_min_size >= INT_MAX / sizeof(Peer) - 1 || new_min_size <= 0) { + /* limit number of max peers */ + if (new_min_size <= 0 || new_min_size > IVSHMEM_MAX_PEERS) { return -1; } |