Fix a potential illegal memory access when linking a corrupt input file.

Resolves: RHEL-130615

binutils-CVE-2025-11083.patch

@@ -0,0 +1,71 @@
+From 9ca499644a21ceb3f946d1c179c38a83be084490 Mon Sep 17 00:00:00 2001
+From: "H.J. Lu" <hjl.tools@gmail.com>
+Date: Thu, 18 Sep 2025 16:59:25 -0700
+Subject: [PATCH] elf: Don't match corrupt section header in linker input
+
+Don't swap in nor match corrupt section header in linker input to avoid
+linker crash later.
+
+	PR ld/33457
+	* elfcode.h (elf_swap_shdr_in): Changed to return bool.  Return
+	false for corrupt section header in linker input.
+	(elf_object_p): Reject if elf_swap_shdr_in returns false.
+
+Signed-off-by: H.J. Lu <hjl.tools@gmail.com>
+---
+ bfd/elfcode.h | 14 +++++++++-----
+ 1 file changed, 9 insertions(+), 5 deletions(-)
+
+--- binutils-with-gold-2.44.orig/bfd/elfcode.h	2025-11-25 13:08:19.115156918 +0000
++++ binutils-with-gold-2.44/bfd/elfcode.h	2025-11-25 13:10:34.050519670 +0000
+@@ -311,7 +311,7 @@ elf_swap_ehdr_out (bfd *abfd,
+ /* Translate an ELF section header table entry in external format into an
+    ELF section header table entry in internal format.  */
+ 
+-static void
++static bool
+ elf_swap_shdr_in (bfd *abfd,
+ 		  const Elf_External_Shdr *src,
+ 		  Elf_Internal_Shdr *dst)
+@@ -341,6 +341,9 @@ elf_swap_shdr_in (bfd *abfd,
+ 	{
+ 	  _bfd_error_handler (_("warning: %pB has a section "
+ 				"extending past end of file"), abfd);
++	  /* PR ld/33457: Don't match corrupt section header.  */
++	  if (abfd->is_linker_input)
++	    return false;
+ 	  abfd->read_only = 1;
+ 	}
+     }
+@@ -350,6 +353,7 @@ elf_swap_shdr_in (bfd *abfd,
+   dst->sh_entsize = H_GET_WORD (abfd, src->sh_entsize);
+   dst->bfd_section = NULL;
+   dst->contents = NULL;
++  return true;
+ }
+ 
+ /* Translate an ELF section header table entry in internal format into an
+@@ -642,9 +646,9 @@ elf_object_p (bfd *abfd)
+ 
+       /* Read the first section header at index 0, and convert to internal
+ 	 form.  */
+-      if (bfd_read (&x_shdr, sizeof x_shdr, abfd) != sizeof (x_shdr))
++      if (bfd_read (&x_shdr, sizeof x_shdr, abfd) != sizeof (x_shdr)
++	  || !elf_swap_shdr_in (abfd, &x_shdr, &i_shdr))
+ 	goto got_no_match;
+-      elf_swap_shdr_in (abfd, &x_shdr, &i_shdr);
+ 
+       /* If the section count is zero, the actual count is in the first
+ 	 section header.  */
+@@ -730,9 +734,9 @@ elf_object_p (bfd *abfd)
+ 	 to internal form.  */
+       for (shindex = 1; shindex < i_ehdrp->e_shnum; shindex++)
+ 	{
+-	  if (bfd_read (&x_shdr, sizeof x_shdr, abfd) != sizeof (x_shdr))
++	  if (bfd_read (&x_shdr, sizeof x_shdr, abfd) != sizeof (x_shdr)
++	      || !elf_swap_shdr_in (abfd, &x_shdr, i_shdrp + shindex))
+ 	    goto got_no_match;
+-	  elf_swap_shdr_in (abfd, &x_shdr, i_shdrp + shindex);
+ 
+ 	  /* Sanity check sh_link and sh_info.  */
+ 	  if (i_shdrp[shindex].sh_link >= num_sec)

binutils.spec

@@ -27,7 +27,7 @@ Name: %{?scl_prefix}binutils
 # The variable %%{source} (see below) should be set to indicate which of these
 # origins is being used.
 Version: 2.44
-Release: 7%{?dist}
+Release: 8%{?dist}
 License: GPL-3.0-or-later AND (GPL-3.0-or-later WITH Bison-exception-2.2) AND (LGPL-2.0-or-later WITH GCC-exception-2.0) AND BSD-3-Clause AND GFDL-1.3-or-later AND GPL-2.0-or-later AND LGPL-2.1-or-later AND LGPL-2.0-or-later
 URL: https://sourceware.org/binutils
 
@@ -334,6 +334,11 @@ Patch18: binutils-fix-ar-test.patch
 # Lifetime: Fixed in 2.45
 Patch19: binutils-aarch64-small-plt0.patch
 
+# Purpose:  Stops a potential illegal memory access when linking a corrupt
+#            input file.  PR 33457
+# Lifetime: Fixed in 2.46
+Patch20: binutils-CVE-2025-11083.patch
+
 #----------------------------------------------------------------------------
 
 # Purpose:  Suppress the x86 linker's p_align-1 tests due to kernel bug on CentOS-10
@@ -1576,6 +1581,9 @@ exit 0
 
 #----------------------------------------------------------------------------
 %changelog
+* Tue Nov 25 2025 Nick Clifton  <nickc@redhat.com> - 2.44-8
+- Fix a potential illegal memory access when linking a corrupt input file.  (RHEL-130615)
+
 * Mon Aug 11 2025 Nick Clifton  <nickc@redhat.com> - 2.44-7
 - Remove uneeded glibc/powerpc patch.  (RHEL-100160)