JDK-6229389 : Type1 font with seac instructions may cause crash
  • Type: Bug
  • Component: client-libs
  • Sub-Component: 2d
  • Affected Version: 6
  • Priority: P4
  • Status: Resolved
  • Resolution: Fixed
  • OS: generic
  • CPU: generic
  • Submitted: 2005-02-15
  • Updated: 2010-04-04
  • Resolved: 2005-04-18
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Other JDK 6
1.4.2_09Fixed 6 b33Fixed
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Description
Type1 fonts, such as Computer Modern Unicode fonts (http://canopus.iacp.dvo.ru/~panov/cm-unicode/), may cause crash.

Steps to reproduce:
  1. Install  Computer Modern Unicode fonts
      (cm-unicode package is shiped with Suse 9.2)
  2. Run Font2DTest
  3. Select any of CMU fonts in the font list
###@###.### 2005-2-15 15:55:21 GMT

Comments
EVALUATION Main reason of the crash is incorrect AdobeStandardEncoding to Unicode mapping for quote chars. As a result of mistake in the mapping "quotesingle" was defined as consiting of "space" and "quotesingle" after processing seac instruction. Consequently, t5his end up with infinitive loop and memory corruption. According to Adobe Standard Encoding to Unicode v2.0 (http://www.unicode.org/Public/MAPPINGS/VENDORS/ADOBE/stdenc.txt) 0x27 from AdobeStandardEncoding should map to 0x2019 ("quoteright") and not to 0x27 ("quotesingle"). Proposed fix also prevents infinitive loops in cases like this (they could happen in malformed fonts). ###@###.### 2005-2-15 16:49:44 GMT
2005-02-15