1 files changed, 3 insertions, 0 deletions

diff --git a/ipc/shm.c b/ipc/shm.c
index 2b64b0d25bba..dda8f1ff3c35 100644
--- a/ipc/shm.c
+++ b/ipc/shm.c
@@ -1160,6 +1160,9 @@ long do_shmat(int shmid, char __user *shmaddr, int shmflg, ulong *raddr,
         down_write(&current->mm->mmap_sem);
         if (addr && !(shmflg & SHM_REMAP)) {
                 err = -EINVAL;
+                if (addr + size < addr)
+                        goto invalid;
+
                 if (find_vma_intersection(current->mm, addr, addr + size))
                         goto invalid;
                 /*