The vulnerability of the Oniguruma library, related to writing beyond the buffer boundaries on the stack, allows a hacker to cause a service failure.

The vulnerability of the Oniguruma library exists due to the improper handling of the code position 0xFFFFFFFF in the unicodeunfoldkey function during the compilation of regular expressions. As a result, when the nigencunicodegetcasefoldcodesbystr function is called, 4 bytes will be written at th...