This patch applies the upstream fix as referenced in [2], using the commit shown in [1].
[1] https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=7a089e0302382f4d4e077941156e1eaa68d01393 [2] https://security-tracker.debian.org/tracker/CVE-2026-6846 Signed-off-by: Shubham Pushpkar <[email protected]> --- .../binutils/binutils-2.42.inc | 1 + .../binutils/binutils/CVE-2026-6846.patch | 57 +++++++++++++++++++ 2 files changed, 58 insertions(+) create mode 100644 meta/recipes-devtools/binutils/binutils/CVE-2026-6846.patch diff --git a/meta/recipes-devtools/binutils/binutils-2.42.inc b/meta/recipes-devtools/binutils/binutils-2.42.inc index 1a865c45f4..4e5125f532 100644 --- a/meta/recipes-devtools/binutils/binutils-2.42.inc +++ b/meta/recipes-devtools/binutils/binutils-2.42.inc @@ -74,5 +74,6 @@ SRC_URI = "\ file://0030-CVE-2025-11840.patch \ file://CVE-2025-69647.patch \ file://CVE-2025-69648.patch \ + file://CVE-2026-6846.patch \ " S = "${WORKDIR}/git" diff --git a/meta/recipes-devtools/binutils/binutils/CVE-2026-6846.patch b/meta/recipes-devtools/binutils/binutils/CVE-2026-6846.patch new file mode 100644 index 0000000000..8eaca87583 --- /dev/null +++ b/meta/recipes-devtools/binutils/binutils/CVE-2026-6846.patch @@ -0,0 +1,57 @@ +From 2a340616f7e6591f83e85777d1d1f6108c33f5b8 Mon Sep 17 00:00:00 2001 +From: Alan Modra <[email protected]> +Date: Mon, 6 Apr 2026 22:58:22 +0930 +Subject: [PATCH] PR 34049 buffer overflow in xcoff_link_add_symbols + +The fact that coffcode.h:coff_set_alignment_hook for rs6000 removes +sections can result in target_index > section_count. Thus any array +indexed by target_index must not be sized by section_count. + + PR ld/34049 + * xcofflink.c (xcoff_link_add_symbols): Size reloc_info array + using max target_index. + +CVE: CVE-2026-6846 +Upstream-Status: Backport [https://sourceware.org/git/?p=binutils-gdb.git;a=commitdiff;h=7a089e0302382f4d4e077941156e1eaa68d01393] + +(cherry picked from commit 7a089e0302382f4d4e077941156e1eaa68d01393) +Signed-off-by: Shubham Pushpkar <[email protected]> +--- + bfd/xcofflink.c | 15 ++++++++++++++- + 1 file changed, 14 insertions(+), 1 deletion(-) + +diff --git a/bfd/xcofflink.c b/bfd/xcofflink.c +index 6ef9abcd8..196967ed0 100644 +--- a/bfd/xcofflink.c ++++ b/bfd/xcofflink.c +@@ -1300,6 +1300,7 @@ xcoff_link_add_symbols (bfd *abfd, struct bfd_link_info *info) + } *reloc_info = NULL; + bfd_size_type amt; + unsigned short visibility; ++ unsigned int max_target_index; + + keep_syms = obj_coff_keep_syms (abfd); + +@@ -1363,7 +1364,19 @@ xcoff_link_add_symbols (bfd *abfd, struct bfd_link_info *info) + order by VMA within a given section, so we handle this by + scanning along the relocs as we process the csects. We index + into reloc_info using the section target_index. */ +- amt = abfd->section_count + 1; ++ max_target_index = 0; ++ for (o = abfd->section_last; o != NULL; o = o->prev) ++ if (o->target_index != 0) ++ { ++ /* The last section added from the object file will have the ++ highest target_index. See coffgen.c coff_real_object_p and ++ make_a_section_from_file. Sections added by ++ xcoff_link_create_extra_sections will have a zero ++ target_index. */ ++ max_target_index = o->target_index; ++ break; ++ } ++ amt = max_target_index + 1; + amt *= sizeof (struct reloc_info_struct); + reloc_info = bfd_zmalloc (amt); + if (reloc_info == NULL) +-- +2.35.6 -- 2.44.1
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