CVE ID:	CVE-2021-23975
Description:	The developer page about:memory has a Measure function for exploring what object types the browser has allocated and their sizes. When this function was invoked we incorrectly called the sizeof function, instead of using the API method that checks for invalid pointers. This vulnerability affects Firefox < 86.
Test IDs:	None available
Cross References:	Common Vulnerability Exposure (CVE) ID: CVE-2021-23975 https://security.gentoo.org/glsa/202104-10 https://bugzilla.mozilla.org/show_bug.cgi?id=1685145 https://bugzilla.mozilla.org/show_bug.cgi?id=1685145 https://www.mozilla.org/security/advisories/mfsa2021-07/ https://www.mozilla.org/security/advisories/mfsa2021-07/