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| author | Nick Clifton <nickc@redhat.com> | 2021-04-27 15:19:41 +0100 |
|---|---|---|
| committer | Nick Clifton <nickc@redhat.com> | 2021-04-27 15:19:41 +0100 |
| commit | 3d64c987c7ca9451bae7dd23ce147ce460caeb20 (patch) | |
| tree | 771ddb364ae882bac4db28181e586179d7c04576 /binutils | |
| parent | 2045d9d17f76fa266acd15a0aa4d3ceacdcb9197 (diff) | |
| download | binutils-gdb-3d64c987c7ca9451bae7dd23ce147ce460caeb20.tar.gz | |
Reject debuglink sections with no associated filename.
PR 27779
* dwarf.c (parse_gnu_debuglink): Reject empty names.
(parse_gnu_debugaltlink): Likewise.
Diffstat (limited to 'binutils')
| -rw-r--r-- | binutils/ChangeLog | 6 | ||||
| -rw-r--r-- | binutils/dwarf.c | 4 |
2 files changed, 10 insertions, 0 deletions
diff --git a/binutils/ChangeLog b/binutils/ChangeLog index 9a1fd5dae09..a2603133dc4 100644 --- a/binutils/ChangeLog +++ b/binutils/ChangeLog @@ -1,3 +1,9 @@ +2021-04-27 Nick Clifton <nickc@redhat.com> + + PR 27779 + * dwarf.c (parse_gnu_debuglink): Reject empty names. + (parse_gnu_debugaltlink): Likewise. + 2021-04-22 Clément Chigot <clement.chigot@atos.net> * od-xcoff.c (dump_xcoff32_symbols): Adapt to new diff --git a/binutils/dwarf.c b/binutils/dwarf.c index 562dce5dd26..e1f76102056 100644 --- a/binutils/dwarf.c +++ b/binutils/dwarf.c @@ -10957,6 +10957,8 @@ parse_gnu_debuglink (struct dwarf_section * section, void * data) name = (const char *) section->start; crc_offset = strnlen (name, section->size) + 1; + if (crc_offset == 1) + return NULL; crc_offset = (crc_offset + 3) & ~3; if (crc_offset + 4 > section->size) return NULL; @@ -10998,6 +11000,8 @@ parse_gnu_debugaltlink (struct dwarf_section * section, void * data) name = (const char *) section->start; namelen = strnlen (name, section->size) + 1; + if (namelen == 1) + return NULL; if (namelen >= section->size) return NULL; |