RHSA-2020:5561

Certain blit values provided by the user were not properly constrained leading to a heap buffer overflow on some video drivers.

Mozilla developers reported memory safety bugs present in Firefox 83 and Firefox ESR 78.5.

When flex-basis was used on a table wrapper, a StyleGenericFlexBasis object could have been incorrectly cast to the wrong type.

Certain input to the CSS Sanitizer confused it, resulting in incorrect components being removed.

Uninitialized Use in V8 in Google Chrome prior to 87.0.4280.88 allowed a remote attacker to obtain potentially sensitive information from process memory via a crafted HTML page.

Using techniques that built on the slipstream research, a malicious webpage could have exposed both an internal network's hosts as well as services running on the user's local machine.

When an extension with the proxy permission registered to receive <all_urls>, the proxy.onRequest callback was not triggered for view-source URLs.