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| author | Nick Clifton <nickc@redhat.com> | 2023-03-30 10:10:09 +0100 |
|---|---|---|
| committer | Nick Clifton <nickc@redhat.com> | 2023-03-30 10:10:09 +0100 |
| commit | c22d38baefc5a7a1e1f5cdc9dbb556b1f0ec5c57 (patch) | |
| tree | 94e2113ce1bdaa54a4737af04bcc0ea20b13e17c /bfd | |
| parent | f2f9bde5cde7ff34ed0a4c4682a211d402aa1086 (diff) | |
| download | gdb-c22d38baefc5a7a1e1f5cdc9dbb556b1f0ec5c57.zip gdb-c22d38baefc5a7a1e1f5cdc9dbb556b1f0ec5c57.tar.gz gdb-c22d38baefc5a7a1e1f5cdc9dbb556b1f0ec5c57.tar.bz2 | |
Fix an illegal memory access when an accessing a zer0-lengthverdef table.
PR 30285
* elf.c (_bfd_elf_slurp_version_tables): Fail if no version definitions are allocated.
Diffstat (limited to 'bfd')
| -rw-r--r-- | bfd/ChangeLog | 6 | ||||
| -rw-r--r-- | bfd/elf.c | 5 |
2 files changed, 11 insertions, 0 deletions
diff --git a/bfd/ChangeLog b/bfd/ChangeLog index cac222c..d9fe0d3 100644 --- a/bfd/ChangeLog +++ b/bfd/ChangeLog @@ -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 @@ -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; |