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| author | Nick Clifton <nickc@redhat.com> | 2017-11-30 10:25:01 +0000 |
|---|---|---|
| committer | Nick Clifton <nickc@redhat.com> | 2017-11-30 10:25:01 +0000 |
| commit | f425ec6600b69e39eb605f3128806ff688137ea8 (patch) | |
| tree | d23913f111758af5cfb8cd4d412ae2432a29baf1 /binutils | |
| parent | e8020e54f4b9ac05150c4b02fa81e228d6cf1f6a (diff) | |
| download | gdb-f425ec6600b69e39eb605f3128806ff688137ea8.zip gdb-f425ec6600b69e39eb605f3128806ff688137ea8.tar.gz gdb-f425ec6600b69e39eb605f3128806ff688137ea8.tar.bz2 | |
Prevent an illegal memory access in readelf when attempting to parse a corrupt ELF file.
PR 22510
* readelf.c (load_debug_section): Fail if there are no section
headers available.
Diffstat (limited to 'binutils')
| -rw-r--r-- | binutils/ChangeLog | 6 | ||||
| -rw-r--r-- | binutils/readelf.c | 4 |
2 files changed, 10 insertions, 0 deletions
diff --git a/binutils/ChangeLog b/binutils/ChangeLog index bacb762..1ea16e4 100644 --- a/binutils/ChangeLog +++ b/binutils/ChangeLog @@ -1,3 +1,9 @@ +2017-11-30 Nick Clifton <nickc@redhat.com> + + PR 22510 + * readelf.c (load_debug_section): Fail if there are no section + headers available. + 2017-11-29 Nick Clifton <nickc@redhat.com> PR 22508 diff --git a/binutils/readelf.c b/binutils/readelf.c index a1f43e6..e0230c7 100644 --- a/binutils/readelf.c +++ b/binutils/readelf.c @@ -13574,6 +13574,10 @@ load_debug_section (enum dwarf_section_display_enum debug, void * data) Elf_Internal_Shdr * sec; Filedata * filedata = (Filedata *) data; + /* Without section headers we cannot find any sections. */ + if (filedata->section_headers == NULL) + return FALSE; + if (filedata->string_table == NULL) { Elf_Internal_Shdr * strs; |