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8036800: Attribute OOM to correct part of code

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Checks that the attribute_length does not exceed the length of remaining data in the class file

Reviewed-by: coleenp, ahgross
This commit is contained in:
Harold Seigel 2014-07-14 13:01:34 +04:00
parent 13d9244b49
commit 53685b407a
1 changed files with 7 additions and 5 deletions
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12
hotspot/src/share/vm/classfile/classFileParser.cpp
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@ -2798,17 +2798,19 @@ void ClassFileParser::parse_classfile_bootstrap_methods_attribute(u4 attribute_b
ClassFileStream* cfs = stream();
u1* current_start = cfs->current();
cfs->guarantee_more(2, CHECK); // length
guarantee_property(attribute_byte_length >= sizeof(u2),
"Invalid BootstrapMethods attribute length %u in class file %s",
attribute_byte_length,
CHECK);
cfs->guarantee_more(attribute_byte_length, CHECK);
int attribute_array_length = cfs->get_u2_fast();
guarantee_property(_max_bootstrap_specifier_index < attribute_array_length,
"Short length on BootstrapMethods in class file %s",
CHECK);
guarantee_property(attribute_byte_length >= sizeof(u2),
"Invalid BootstrapMethods attribute length %u in class file %s",
attribute_byte_length,
CHECK);
// The attribute contains a counted array of counted tuples of shorts,
// represending bootstrap specifiers: