This update for MozillaFirefox to version 68.7.0 ESR fixes the following issues: - CVE-2020-6821: Uninitialized memory could be read when using the WebGL copyTexSubImage method . - CVE-2020-6822: Fixed out of bounds write in GMPDecodeData when processing large images . - CVE-2020-6825: Fixed Memory safety bugs . - CVE-2020-6827: Custom Tabs could have the URI spoofed . - CVE-2020-6828: Preference overwrite via crafted Intent .