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| author | Nick Clifton <nickc@redhat.com> | 2022-10-19 15:09:12 +0100 |
|---|---|---|
| committer | Nick Clifton <nickc@redhat.com> | 2022-10-19 15:09:12 +0100 |
| commit | 5c831a3c7f3ca98d6aba1200353311e1a1f84c70 (patch) | |
| tree | 04a0d715b525443894fc8505ab6efc6bc576dced | |
| parent | feab6abfe23b5b1724cb3c00059254e8f1bc5225 (diff) | |
| download | gdb-5c831a3c7f3ca98d6aba1200353311e1a1f84c70.zip gdb-5c831a3c7f3ca98d6aba1200353311e1a1f84c70.tar.gz gdb-5c831a3c7f3ca98d6aba1200353311e1a1f84c70.tar.bz2 | |
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.
| -rw-r--r-- | bfd/ChangeLog | 6 | ||||
| -rw-r--r-- | bfd/elf.c | 4 |
2 files changed, 9 insertions, 1 deletions
diff --git a/bfd/ChangeLog b/bfd/ChangeLog index c618d81..06501775 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 @@ -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; |