binutils: Fix CVE-2025-7545

objcopy: Don't extend the output section size
Since the output section contents are copied from the input, don't
extend the output section size beyond the input section size.

Backport a patch from upstream to fix CVE-2025-7545
Upstream-Status: Backport [https://sourceware.org/git/?p=binutils-gdb.git;a=patch;h=08c3cbe5926e4d355b5cb70bbec2b1eeb40c2944]

(From OE-Core rev: 4f461ed46b7694fc4815c7f0504b9cefe5da8e19)

Signed-off-by: Deepesh Varatharajan <Deepesh.Varatharajan@windriver.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>

meta/recipes-devtools/binutils/binutils-2.38.inc

@@ -79,5 +79,6 @@ SRC_URI = "\
      file://0041-CVE-2025-5244.patch \
      file://0042-CVE-2025-5245.patch \
      file://0043-CVE-2025-7546.patch \
+     file://0043-CVE-2025-7545.patch \
 "
 S  = "${WORKDIR}/git"

meta/recipes-devtools/binutils/binutils/0043-CVE-2025-7545.patch

@@ -0,0 +1,39 @@
+From: "H.J. Lu" <hjl.tools@gmail.com>
+Date: Sat, 21 Jun 2025 06:36:56 +0800
+
+Upstream-Status: Backport [https://sourceware.org/git/?p=binutils-gdb.git;a=patch;h08c3cbe5926e4d355b5cb70bbec2b1eeb40c2944]
+CVE: CVE-2025-7545
+
+Since the output section contents are copied from the input, don't
+extend the output section size beyond the input section size.
+
+	PR binutils/33049
+	* objcopy.c (copy_section): Don't extend the output section
+	size beyond the input section size.
+
+Signed-off-by: Deepesh Varatharajan <Deepesh.Varatharajan@windriver.com>
+
+diff --git a/binutils/objcopy.c b/binutils/objcopy.c
+index d53aa5c6..874f163b 100644
+--- a/binutils/objcopy.c
++++ b/binutils/objcopy.c
+@@ -4444,6 +4444,7 @@ copy_section (bfd *ibfd, sec_ptr isection, void *obfdarg)
+ 	  char *to = (char *) memhunk;
+ 	  char *end = (char *) memhunk + size;
+ 	  int i;
++	  bfd_size_type memhunk_size = size;
+ 
+ 	  /* If the section address is not exactly divisible by the interleave,
+ 	     then we must bias the from address.  If the copy_byte is less than
+@@ -4463,6 +4464,11 @@ copy_section (bfd *ibfd, sec_ptr isection, void *obfdarg)
+ 	      }
+ 
+ 	  size = (size + interleave - 1 - copy_byte) / interleave * copy_width;
++
++	  /* Don't extend the output section size.  */
++	  if (size > memhunk_size)
++           size = memhunk_size;
++
+ 	  osection->lma /= interleave;
+ 	  if (copy_byte < extra)
+ 	    osection->lma++;