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47edd3bbdd
Upstream-Status: Backport [https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=5c831a3c7f3ca98d6aba1200353311e1a1f84c70] (From OE-Core rev: 1f269e532a8fd463de2869be2768feb79ad36bd7) Signed-off-by: Yash Shinde <Yash.Shinde@windriver.com> Signed-off-by: Steve Sakoman <steve@sakoman.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
38 lines
1.2 KiB
Diff
38 lines
1.2 KiB
Diff
From 5c831a3c7f3ca98d6aba1200353311e1a1f84c70 Mon Sep 17 00:00:00 2001
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From: Nick Clifton <nickc@redhat.com>
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Date: Wed, 19 Oct 2022 15:09:12 +0100
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Subject: [PATCH] Fix an illegal memory access when parsing an ELF file
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containing corrupt symbol version information.
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PR 29699
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* elf.c (_bfd_elf_slurp_version_tables): Fail if the sh_info field
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of the section header is zero.
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Upstream-Status: Backport [https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=5c831a3c7f3ca98d6aba1200353311e1a1f84c70]
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CVE: CVE-2022-4285
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Signed-off-by: Yash Shinde <Yash.Shinde@windriver.com>
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---
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bfd/ChangeLog | 6 ++++++
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bfd/elf.c | 4 +++-
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2 files changed, 9 insertions(+), 1 deletion(-)
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diff --git a/bfd/elf.c b/bfd/elf.c
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index fe00e0f9189..7cd7febcf95 100644
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--- a/bfd/elf.c
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+++ b/bfd/elf.c
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@@ -8918,7 +8918,9 @@ _bfd_elf_slurp_version_tables (bfd *abfd, bool default_imported_symver)
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bfd_set_error (bfd_error_file_too_big);
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goto error_return_verref;
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}
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- elf_tdata (abfd)->verref = (Elf_Internal_Verneed *) bfd_alloc (abfd, amt);
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+ if (amt == 0)
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+ goto error_return_verref;
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+ elf_tdata (abfd)->verref = (Elf_Internal_Verneed *) bfd_zalloc (abfd, amt);
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if (elf_tdata (abfd)->verref == NULL)
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goto error_return_verref;
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--
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2.31.1
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