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[ruby/json] Fix potential out of bound read in json_string_unescape.

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https://github.com/ruby/json/commit/cf242d89a0
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Jean Boussier 2025-03-11 18:49:14 +01:00 committed by Hiroshi SHIBATA
parent 8cc85dc00f
commit e6a2cf9fd7
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1 changed files with 1 additions and 1 deletions
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ext/json/parser/parser.c
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@ -608,7 +608,7 @@ static VALUE json_string_unescape(JSON_ParserState *state, const char *string, c
buffer = RSTRING_PTR(result); buffer = RSTRING_PTR(result);
bufferStart = buffer; bufferStart = buffer;
while ((pe = memchr(pe, '\\', stringEnd - pe))) { while (pe < stringEnd && (pe = memchr(pe, '\\', stringEnd - pe))) {
unescape = (char *) "?"; unescape = (char *) "?";
unescape_len = 1; unescape_len = 1;
if (pe > p) { if (pe > p) {