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| author | Nick Clifton <nickc@redhat.com> | 2023-01-11 12:12:25 +0000 |
|---|---|---|
| committer | Nick Clifton <nickc@redhat.com> | 2023-01-11 12:12:25 +0000 |
| commit | 11d171f1910b508a81d21faa087ad1af573407d8 (patch) | |
| tree | 0970c1a1c70a8bfef5acf93cd6733d07705fe9a0 | |
| parent | f1e19328594fb0cc35dc7d6573a7a36f5ab9ecc4 (diff) | |
| download | gdb-11d171f1910b508a81d21faa087ad1af573407d8.zip gdb-11d171f1910b508a81d21faa087ad1af573407d8.tar.gz gdb-11d171f1910b508a81d21faa087ad1af573407d8.tar.bz2 | |
Fix a potential illegal memory access in the BFD library when parsing a corrupt DWARF file.
PR 29988
* dwarf2.c (read_indexed_address): Fix check for an out of range
offset.
| -rw-r--r-- | bfd/ChangeLog | 6 | ||||
| -rw-r--r-- | bfd/dwarf2.c | 2 |
2 files changed, 7 insertions, 1 deletions
diff --git a/bfd/ChangeLog b/bfd/ChangeLog index 4219d03..2f2ee0d 100644 --- a/bfd/ChangeLog +++ b/bfd/ChangeLog @@ -1,3 +1,9 @@ +2023-01-11 Nick Clifton <nickc@redhat.com> + + PR 29988 + * dwarf2.c (read_indexed_address): Fix check for an out of range + offset. + 2023-01-06 Nick Clifton <nickc@redhat.com> * po/ru.po: Updated Russian translation. diff --git a/bfd/dwarf2.c b/bfd/dwarf2.c index bd43180..835851e 100644 --- a/bfd/dwarf2.c +++ b/bfd/dwarf2.c @@ -1420,7 +1420,7 @@ read_indexed_address (uint64_t idx, struct comp_unit *unit) offset += unit->dwarf_addr_offset; if (offset < unit->dwarf_addr_offset || offset > file->dwarf_addr_size - || file->dwarf_addr_size - offset < unit->offset_size) + || file->dwarf_addr_size - offset < unit->addr_size) return 0; info_ptr = file->dwarf_addr_buffer + offset; |