PR 33452 SEGV in bfd_elf_gc_record_vtentry
Limit addends on vtentry relocs, otherwise ld might attempt to
allocate a stupidly large array. This also fixes the expression
overflow leading to pr33452. A vtable of 33M entries on a 64-bit
host is surely large enough, especially considering that VTINHERIT
and VTENTRY relocations are to support -fvtable-gc that disappeared
from gcc over 20 years ago.
PR ld/33452
* elflink.c (bfd_elf_gc_record_vtentry): Sanity check addend.
diff --git a/bfd/elflink.c b/bfd/elflink.c
index 54f0d6e..0a04561 100644
--- a/bfd/elflink.c
+++ b/bfd/elflink.c
@@ -14865,7 +14865,7 @@
const struct elf_backend_data *bed = get_elf_backend_data (abfd);
unsigned int log_file_align = bed->s->log_file_align;
- if (!h)
+ if (!h || addend > 1u << 28)
{
/* xgettext:c-format */
_bfd_error_handler (_("%pB: section '%pA': corrupt VTENTRY entry"),
