viv: insn: derefs: fix exception

2025-12-12 15:49:46 -08:00 · 2020-08-14 09:37:51 -06:00
parent 90cdef5232
commit 6e525a93d7
1 changed files with 6 additions and 1 deletions
--- a/capa/features/extractors/viv/insn.py
+++ b/capa/features/extractors/viv/insn.py
@@ -165,7 +165,12 @@ def derefs(vw, p):
            return
        yield p

-        next = vw.readMemoryPtr(p)
+        try:
+            next = vw.readMemoryPtr(p)
+        except Exception:
+            # if not enough bytes can be read, such as end of the section.
+            # unfortunately, viv returns a plain old generic `Exception` for this.
+            return

        # sanity: pointer points to self
        if next == p: