elf: fixed .text not allocated at 0

angr · Oct 3, 2024 · 54389e9 · 54389e9
1 parent 2bec0d8
commit 54389e9
Showing 1 changed file with 5 additions and 2 deletions.
diff --git a/cle/backends/elf/elf.py b/cle/backends/elf/elf.py
@@ -1200,6 +1200,8 @@ def ___segments_overlap(seg1, seg2):
         segment_relro.flags = overlapping_segments[0].flags & ~2
 
     def __register_sections(self):
+        SECTIONS_NOT_TO_ALLOCATE = {"SHT_NOTE", "SHT_MIPS_REGINFO"}
+
         new_addr = 0
         sec_list = []
 
@@ -1214,7 +1216,8 @@ def __register_sections(self):
                     new_addr = (new_addr + (align - 1)) // align * align
 
                 remap_offset = new_addr - sh_addr
-                new_addr += sec_readelf.header["sh_size"]  # address for next section
+                if sec_readelf.header["sh_type"] not in SECTIONS_NOT_TO_ALLOCATE:
+                    new_addr += sec_readelf.header["sh_size"]  # address for next section
 
             section = ELFSection(sec_readelf, remap_offset=remap_offset)
             sec_list.append((sec_readelf, section))
@@ -1241,7 +1244,7 @@ def __register_sections(self):
                             b"\0" * sec_readelf.header["sh_size"],
                             overwrite=True,
                         )
-                    elif section.type == "SHT_NOTE":
+                    elif section.type in SECTIONS_NOT_TO_ALLOCATE:
                         pass  # observed this case in angr/angr#3829
                     else:  # elif section.type == 'SHT_PROGBITS':
                         self.memory.add_backer(