FreeChainXenon/binutils-gdb
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Fix an illegal memory access when an accessing a zer0-lengthverdef table.

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PR 30285
  * elf.c (_bfd_elf_slurp_version_tables): Fail if no version definitions are allocated.
This commit is contained in:
Nick Clifton 2023-03-30 10:10:09 +01:00
parent f2f9bde5cd
commit c22d38baef
2 changed files with 11 additions and 0 deletions
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6
bfd/ChangeLog
View file

@ -1,3 +1,9 @@
2023-03-30 Nick Clifton <nickc@redhat.com>
PR 30285
* elf.c (_bfd_elf_slurp_version_tables): Fail if no version
definitions are allocated.
2023-02-27 Felix Willgerodt <felix.willgerodt@intel.com>
* elf64-x86-64.c (elf_x86_64_grok_psinfo): Check for

5
bfd/elf.c
View file

@ -9030,6 +9030,9 @@ _bfd_elf_slurp_version_tables (bfd *abfd, bool default_imported_symver)
bfd_set_error (bfd_error_file_too_big);
goto error_return_verdef;
}
if (amt == 0)
goto error_return_verdef;
elf_tdata (abfd)->verdef = (Elf_Internal_Verdef *) bfd_zalloc (abfd, amt);
if (elf_tdata (abfd)->verdef == NULL)
goto error_return_verdef;
@ -9133,6 +9136,8 @@ _bfd_elf_slurp_version_tables (bfd *abfd, bool default_imported_symver)
bfd_set_error (bfd_error_file_too_big);
goto error_return;
}
if (amt == 0)
goto error_return;
elf_tdata (abfd)->verdef = (Elf_Internal_Verdef *) bfd_zalloc (abfd, amt);
if (elf_tdata (abfd)->verdef == NULL)
goto error_return;