An unaligned memory access issue was found in the ContextualGlyphSubstProc2 in the 2D component of OpenJDK. A specially-crafted font file could cause a Java application to crash when processed.
Public now via Oracle CPU January 2022:
Fixed in Oracle Java SE 8u321 and 7u331.
OpenJDK-8 upstream commit:
This issue is reported to only affect Java running on Solaris platform and is not believed to be applicable to other platforms.