1 files changed, 6 insertions, 0 deletions
diff --git a/Kernel/Memory/AddressSpace.cpp b/Kernel/Memory/AddressSpace.cpp
index e37d3f22c3..1fa839afdb 100644
--- a/Kernel/Memory/AddressSpace.cpp
+++ b/Kernel/Memory/AddressSpace.cpp
@@ -59,6 +59,8 @@ ErrorOr<void> AddressSpace::unmap_mmap_range(VirtualAddress addr, size_t size)
     if (auto* whole_region = find_region_from_range(range_to_unmap)) {
         if (!whole_region->is_mmap())
             return EPERM;
+        if (whole_region->is_immutable())
+            return EPERM;
 
         PerformanceManager::add_unmap_perf_event(Process::current(), whole_region->range());
 
@@ -69,6 +71,8 @@ ErrorOr<void> AddressSpace::unmap_mmap_range(VirtualAddress addr, size_t size)
     if (auto* old_region = find_region_containing(range_to_unmap)) {
         if (!old_region->is_mmap())
             return EPERM;
+        if (old_region->is_immutable())
+            return EPERM;
 
         // Remove the old region from our regions tree, since were going to add another region
         // with the exact same start address.
@@ -99,6 +103,8 @@ ErrorOr<void> AddressSpace::unmap_mmap_range(VirtualAddress addr, size_t size)
     for (auto* region : regions) {
         if (!region->is_mmap())
             return EPERM;
+        if (region->is_immutable())
+            return EPERM;
     }
 
     Vector<Region*, 2> new_regions;