[Opensc-commits] [OpenSC/OpenSC] b71ca1: scconf: End with error for too nested blocks

[Veronika H. <no...@gi...>]

  Branch: refs/heads/master
  Home:   https://github.com/OpenSC/OpenSC
  Commit: b71ca16b28c4e1a8d35a326f65bed29a8dec2183
      https://github.com/OpenSC/OpenSC/commit/b71ca16b28c4e1a8d35a326f65bed29a8dec2183
  Author: Veronika Hanulikova <vha...@re...>
  Date:   2022-02-01 (Tue, 01 Feb 2022)

  Changed paths:
    M src/scconf/internal.h
    M src/scconf/parse.c
    M src/scconf/sclex.c

  Log Message:
  -----------
  scconf: End with error for too nested blocks

Freeing cause stack-overflow because of huge number of nested calls.
The parser ends with an error when the nested blocks limit is exceeded.

Thanks oss-fuzz

https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=40676
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=41434
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=41450