update firefox
CVE-2022-22740: Use-after-free of ChannelEventQueue::mOwner
"Certain network request objects were freed too early ... could have lead to a use-after-free causing a potentially exploitable crash."
CVE-2022-22738: Heap-buffer-overflow in blendGaussianBlur
"Applying a CSS filter effect could have accessed out of bounds memory. This could have lead to a heap-buffer-overflow causing a potentially exploitable crash."
https://www.mozilla.org/en-US/security/advisories/mfsa2022-02/