RHSA-2022:0824

An unexpected message in the WebGPU IPC framework could lead to a use-after-free and exploitable sandbox escape.

Removing an XSLT parameter during processing could have lead to an exploitable use-after-free.

In Expat (aka libexpat) before 2.4.5, there is an integer overflow in storeRawNames.

If an attacker could control the contents of an iframe sandboxed with <code>allow-popups</code> but not <code>allow-scripts</code>, they were able to craft a link that, when clicked, would lead to JavaScript execution in…

xmlparse.c in Expat (aka libexpat) before 2.4.5 allows attackers to insert namespace-separator characters into namespace URIs.

An attacker could have caused a use-after-free by forcing a text reflow in an SVG object leading to a potentially exploitable crash.

xmltok_impl.c in Expat (aka libexpat) before 2.4.5 lacks certain validation of encoding, such as checks for whether a UTF-8 character is valid in a certain context.

addBinding in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow.

defineAttribute in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow.

build_model in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow.

When resizing a popup after requesting fullscreen access, the popup would not display the fullscreen notification.

When installing an add-on, Firefox verified the signature before prompting the user; but while the user was confirming the prompt, the underlying add-on file could have been modified and Firefox would not have noticed.

Previously Firefox for macOS and Linux would download temporary files to a user-specific directory in <code>/tmp</code>, but this behavior was changed to download them to <code>/tmp</code> where they could be affected by…