diff options
Diffstat (limited to 'meta/recipes-devtools/binutils/binutils/CVE-2022-47695.patch')
| -rw-r--r-- | meta/recipes-devtools/binutils/binutils/CVE-2022-47695.patch | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/meta/recipes-devtools/binutils/binutils/CVE-2022-47695.patch b/meta/recipes-devtools/binutils/binutils/CVE-2022-47695.patch new file mode 100644 index 0000000000..101a4cdb4e --- /dev/null +++ b/meta/recipes-devtools/binutils/binutils/CVE-2022-47695.patch @@ -0,0 +1,57 @@ +From 3d3af4ba39e892b1c544d667ca241846bc3df386 Mon Sep 17 00:00:00 2001 +From: Alan Modra <amodra@gmail.com> +Date: Sun, 4 Dec 2022 22:15:40 +1030 +Subject: [PATCH] PR29846, segmentation fault in objdump.c compare_symbols + +Fixes a fuzzed object file problem where plt relocs were manipulated +in such a way that two synthetic symbols were generated at the same +plt location. Won't occur in real object files. + + PR 29846 + PR 20337 + * objdump.c (compare_symbols): Test symbol flags to exclude + section and synthetic symbols before attempting to check flavour. +Upstream-Status: Backport [https://sourceware.org/git/?p=binutils-gdb.git;a=commitdiff;h=3d3af4ba39e892b1c544d667ca241846bc3df386] +CVE: CVE-2022-47695 +Signed-off-by: Virendra Thakur <virendrak@kpit.com> +Comment: Patch refreshed based on codebase. +--- + binutils/objdump.c | 23 ++++++++++------------- + 1 file changed, 10 insertions(+), 13 deletions(-) + +diff --git a/binutils/objdump.c b/binutils/objdump.c +index e8481b2d928..d95c8b68bf0 100644 +--- a/binutils/objdump.c ++++ b/binutils/objdump.c +@@ -935,20 +935,17 @@ + return 1; + } + +- if (bfd_get_flavour (bfd_asymbol_bfd (a)) == bfd_target_elf_flavour ++ /* Sort larger size ELF symbols before smaller. See PR20337. */ ++ bfd_vma asz = 0; ++ if ((a->flags & (BSF_SECTION_SYM | BSF_SYNTHETIC)) == 0 ++ && bfd_get_flavour (bfd_asymbol_bfd (a)) == bfd_target_elf_flavour) ++ asz = ((elf_symbol_type *) a)->internal_elf_sym.st_size; ++ bfd_vma bsz = 0; ++ if ((b->flags & (BSF_SECTION_SYM | BSF_SYNTHETIC)) == 0 + && bfd_get_flavour (bfd_asymbol_bfd (b)) == bfd_target_elf_flavour) +- { +- bfd_vma asz, bsz; +- +- asz = 0; +- if ((a->flags & (BSF_SECTION_SYM | BSF_SYNTHETIC)) == 0) +- asz = ((elf_symbol_type *) a)->internal_elf_sym.st_size; +- bsz = 0; +- if ((b->flags & (BSF_SECTION_SYM | BSF_SYNTHETIC)) == 0) +- bsz = ((elf_symbol_type *) b)->internal_elf_sym.st_size; +- if (asz != bsz) +- return asz > bsz ? -1 : 1; +- } ++ bsz = ((elf_symbol_type *) b)->internal_elf_sym.st_size; ++ if (asz != bsz) ++ return asz > bsz ? -1 : 1; + + /* Symbols that start with '.' might be section names, so sort them + after symbols that don't start with '.'. */ + |