asan: segfault in coff_write_auxent_fname

More fuzzed input file nonsense. * coffgen.c (coff_write_symbol): Don't call coff_write_auxent_fname when extrap is NULL.
AthenaCPU · Aug 6, 2022 · 431d48e · 431d48e
1 parent f7a559d
commit 431d48e
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/bfd/coffgen.c b/bfd/coffgen.c
@@ -1058,7 +1058,8 @@ coff_write_symbol (bfd *abfd,
 	  /* Adjust auxent only if this isn't the filename
 	     auxiliary entry.  */
 	  if (native->u.syment.n_sclass == C_FILE
-	      && (native + j + 1)->u.auxent.x_file.x_ftype)
+	      && (native + j + 1)->u.auxent.x_file.x_ftype
+	      && (native + j + 1)->extrap)
 	    coff_write_auxent_fname (abfd, (char *) (native + j + 1)->extrap,
 				     &(native + j + 1)->u.auxent, strtab, hash);