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Gary Lockyer a699256f43 lib ldb: Limit depth of ldb_parse_tree
Limit the number of nested conditionals allowed by ldb_parse tree to
128, to avoid potential stack overflow issues.

Credit Oss-Fuzz

REF: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=19508

Signed-off-by: Gary Lockyer <gary@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>

Autobuild-User(master): Gary Lockyer <gary@samba.org>
Autobuild-Date(master): Sun May 10 23:21:08 UTC 2020 on sn-devel-184
2020-05-10 23:21:08 +00:00
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2015-11-05 18:04:23 +01:00