* [binutils-gdb] Fix an illegal memory access when parsing an ELF file containing corrupt symbol version information.
@ 2022-10-19 14:10 Nick Clifton
0 siblings, 0 replies; only message in thread
From: Nick Clifton @ 2022-10-19 14:10 UTC (permalink / raw)
To: bfd-cvs
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=5c831a3c7f3ca98d6aba1200353311e1a1f84c70
commit 5c831a3c7f3ca98d6aba1200353311e1a1f84c70
Author: Nick Clifton <nickc@redhat.com>
Date: Wed Oct 19 15:09:12 2022 +0100
Fix an illegal memory access when parsing an ELF file containing corrupt symbol version information.
PR 29699
* elf.c (_bfd_elf_slurp_version_tables): Fail if the sh_info field
of the section header is zero.
Diff:
---
bfd/ChangeLog | 6 ++++++
bfd/elf.c | 4 +++-
2 files changed, 9 insertions(+), 1 deletion(-)
diff --git a/bfd/ChangeLog b/bfd/ChangeLog
index c618d817ff9..06501775453 100644
--- a/bfd/ChangeLog
+++ b/bfd/ChangeLog
@@ -1,3 +1,9 @@
+2022-10-19 Nick Clifton <nickc@redhat.com>
+
+ PR 29699
+ * elf.c (_bfd_elf_slurp_version_tables): Fail if the sh_info field
+ of the section header is zero.
+
2022-09-09 Nick Clifton <nickc@redhat.com>
PR 29532
diff --git a/bfd/elf.c b/bfd/elf.c
index fe00e0f9189..7cd7febcf95 100644
--- a/bfd/elf.c
+++ b/bfd/elf.c
@@ -8918,7 +8918,9 @@ _bfd_elf_slurp_version_tables (bfd *abfd, bool default_imported_symver)
bfd_set_error (bfd_error_file_too_big);
goto error_return_verref;
}
- elf_tdata (abfd)->verref = (Elf_Internal_Verneed *) bfd_alloc (abfd, amt);
+ if (amt == 0)
+ goto error_return_verref;
+ elf_tdata (abfd)->verref = (Elf_Internal_Verneed *) bfd_zalloc (abfd, amt);
if (elf_tdata (abfd)->verref == NULL)
goto error_return_verref;
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