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-rw-r--r--fs/exec.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/fs/exec.c b/fs/exec.c
index 2d94552..1b63237 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -594,6 +594,11 @@ int setup_arg_pages(struct linux_binprm *bprm,
#else
stack_top = arch_align_stack(stack_top);
stack_top = PAGE_ALIGN(stack_top);
+
+ if (unlikely(stack_top < mmap_min_addr) ||
+ unlikely(vma->vm_end - vma->vm_start >= stack_top - mmap_min_addr))
+ return -ENOMEM;
+
stack_shift = vma->vm_end - stack_top;
bprm->p -= stack_shift;