* PR29482 - strip: heap-buffer-overflow
@ 2022-08-13 6:52 Alan Modra
0 siblings, 0 replies; only message in thread
From: Alan Modra @ 2022-08-13 6:52 UTC (permalink / raw)
To: binutils
PR 29482
* coffcode.h (coff_set_section_contents): Sanity check _LIB.
diff --git a/bfd/coffcode.h b/bfd/coffcode.h
index 67aaf158ca1..52027981c3f 100644
--- a/bfd/coffcode.h
+++ b/bfd/coffcode.h
@@ -4302,10 +4302,13 @@ coff_set_section_contents (bfd * abfd,
rec = (bfd_byte *) location;
recend = rec + count;
- while (rec < recend)
+ while (recend - rec >= 4)
{
+ size_t len = bfd_get_32 (abfd, rec);
+ if (len == 0 || len > (size_t) (recend - rec) / 4)
+ break;
+ rec += len * 4;
++section->lma;
- rec += bfd_get_32 (abfd, rec) * 4;
}
BFD_ASSERT (rec == recend);
--
Alan Modra
Australia Development Lab, IBM
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