[binutils-gdb] asan: NULL deref in filter_symbols

[Alan Modra]

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=d499fb89448c3f2e061813f12a1b63fbaa29422e

commit d499fb89448c3f2e061813f12a1b63fbaa29422e
Author: Alan Modra <amodra@gmail.com>
Date:   Wed Nov 23 22:07:03 2022 +1030

    asan: NULL deref in filter_symbols
    
    If tdata->symbols is NULL, make tdata->symcount zero too.  This makes
    wasm_get_symtab_upper_bound return the proper result and stops
    cascading errors.
    
            * wasm-module.c (wasm_scan_name_function_section): Clear
            tdata->symcount on error.

Diff:
---
 bfd/wasm-module.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/bfd/wasm-module.c b/bfd/wasm-module.c
index 2c2c6c72863..c96665b6e91 100644
--- a/bfd/wasm-module.c
+++ b/bfd/wasm-module.c
@@ -359,6 +359,7 @@ wasm_scan_name_function_section (bfd *abfd, sec_ptr asect)
  error_return:
   if (symbols)
     bfd_release (abfd, symbols);
+  tdata->symcount = 0;
   return false;
 }