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[AutoPR- Security] Patch gdb for CVE-2025-11083 [LOW] #17030

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[AutoPR- Security] Patch gdb for CVE-2025-11083 [LOW] #17030

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73 changes: 73 additions & 0 deletions SPECS/gdb/CVE-2025-11083.patch
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Original file line number Diff line number Diff line change
@@ -0,0 +1,73 @@
From b1f730e0c928112b9bb703295fdfbe00d1a1f20d Mon Sep 17 00:00:00 2001
From: AllSpark <allspark@microsoft.com>
Date: Tue, 5 May 2026 12:42:02 +0000
Subject: [PATCH] bfd: elf: Don't match corrupt section header in linker input

PR ld/33457
* elfcode.h (elf_swap_shdr_in): Change 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: Azure Linux Security Servicing Account <azurelinux-security@microsoft.com>
Upstream-reference: AI Backport of https://sourceware.org/git/?p=binutils-gdb.git;a=patch;h=9ca499644a21ceb3f946d1c179c38a83be084490
---
bfd/elfcode.h | 14 +++++++++-----
1 file changed, 9 insertions(+), 5 deletions(-)

diff --git a/bfd/elfcode.h b/bfd/elfcode.h
index 7a4de82..d19fd18 100644
--- a/bfd/elfcode.h
+++ b/bfd/elfcode.h
@@ -298,7 +298,7 @@ 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)
@@ -328,6 +328,9 @@ 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;
}
}
@@ -337,6 +340,7 @@ 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
@@ -629,9 +633,9 @@ elf_object_p (bfd *abfd)

/* Read the first section header at index 0, and convert to internal
form. */
- if (bfd_bread (&x_shdr, sizeof x_shdr, abfd) != sizeof (x_shdr))
+ if (bfd_bread (&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. */
@@ -717,9 +721,9 @@ elf_object_p (bfd *abfd)
to internal form. */
for (shindex = 1; shindex < i_ehdrp->e_shnum; shindex++)
{
- if (bfd_bread (&x_shdr, sizeof x_shdr, abfd) != sizeof (x_shdr))
+ if (bfd_bread (&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)
--
2.45.4

6 changes: 5 additions & 1 deletion SPECS/gdb/gdb.spec
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Original file line number Diff line number Diff line change
@@ -1,7 +1,7 @@
Summary: C debugger
Name: gdb
Version: 13.2
Release: 7%{?dist}
Release: 8%{?dist}
License: GPLv2+
Vendor: Microsoft Corporation
Distribution: Azure Linux
Expand All @@ -14,6 +14,7 @@ Patch2: CVE-2023-39130.patch
Patch3: CVE-2025-7546.patch
Patch4: CVE-2025-11082.patch
Patch5: CVE-2026-4647.patch
Patch6: CVE-2025-11083.patch
BuildRequires: expat-devel
BuildRequires: gcc-c++
BuildRequires: gcc-gfortran
Expand Down Expand Up @@ -107,6 +108,9 @@ make check TESTS='gdb.base/default.exp'
%{_mandir}/*/*

%changelog
* Tue May 05 2026 Azure Linux Security Servicing Account <azurelinux-security@microsoft.com> - 13.2-8
- Patch for CVE-2025-11083

* Thu Apr 02 2026 Azure Linux Security Servicing Account <azurelinux-security@microsoft.com> - 13.2-7
- Patch for CVE-2026-4647

Expand Down
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