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| author | Alan Modra <amodra@gmail.com> | 2021-11-09 09:02:03 +1030 |
|---|---|---|
| committer | Alan Modra <amodra@gmail.com> | 2021-11-10 09:20:10 +1030 |
| commit | b9af637988e82ddfe71bde5ddcb5d9b3a4673acd (patch) | |
| tree | b6c0faa3531f245d33cc9c0cc91ecfd8ccae95bb | |
| parent | 5da7a3deab00d81df9c5fa708520fc05d6a22ffa (diff) | |
| download | gdb-b9af637988e82ddfe71bde5ddcb5d9b3a4673acd.zip gdb-b9af637988e82ddfe71bde5ddcb5d9b3a4673acd.tar.gz gdb-b9af637988e82ddfe71bde5ddcb5d9b3a4673acd.tar.bz2 | |
PR28542, Undefined behaviours in readelf.c
PR 28542
* readelf.c (dump_relocations): Check that section headers have
been read before attempting to access section name.
(print_dynamic_symbol): Likewise.
(process_mips_specific): Delete dead code.
| -rw-r--r-- | binutils/readelf.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/binutils/readelf.c b/binutils/readelf.c index 50129f4..c71d542 100644 --- a/binutils/readelf.c +++ b/binutils/readelf.c @@ -1934,7 +1934,8 @@ dump_relocations (Filedata * filedata, if (ELF_ST_TYPE (psym->st_info) == STT_SECTION) { - if (psym->st_shndx < filedata->file_header.e_shnum) + if (psym->st_shndx < filedata->file_header.e_shnum + && filedata->section_headers != NULL) sec_name = section_name_print (filedata, filedata->section_headers + psym->st_shndx); @@ -12861,6 +12862,7 @@ print_dynamic_symbol (Filedata *filedata, unsigned long si, if (ELF_ST_TYPE (psym->st_info) == STT_SECTION && psym->st_shndx < filedata->file_header.e_shnum + && filedata->section_headers != NULL && psym->st_name == 0) { is_valid @@ -18262,7 +18264,6 @@ process_mips_specific (Filedata * filedata) Elf_External_Options * eopt; size_t offset; int cnt; - sect = filedata->section_headers; /* Find the section header so that we get the size. */ sect = find_section_by_type (filedata, SHT_MIPS_OPTIONS); |