CVE-2019-11037: php-imagick: out-of-bounds write to memory in ImagickKernel::fromMatrix() leading to possible crash and DoS

Severity: Critical

CVSS Score: 9.8

In PHP imagick extension in versions between 3.3.0 and 3.4.4, writing to an array of values in ImagickKernel::fromMatrix() function did not check that the address will be within the allocated array. This could lead to out of bounds write to memory if the function is called with the data controlled by untrusted party.