29 lines
1.1 KiB
Diff
29 lines
1.1 KiB
Diff
From: Nick Clifton <nickc@redhat.com>
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Date: Wed, 19 Oct 2022 14:09:12 +0000 (+0100)
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Subject: Fix an illegal memory access when parsing an ELF file containing corrupt symbol versi...
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X-Git-Tag: gdb-13-branchpoint~796
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X-Git-Url: https://sourceware.org/git/?p=binutils-gdb.git;a=commitdiff_plain;h=5c831a3c7f3ca98d6aba1200353311e1a1f84c70
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Fix an illegal memory access when parsing an ELF file 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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---
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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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