diff -Nru firefox-94.0+build3/debian/changelog firefox-94.0+build3/debian/changelog
--- firefox-94.0+build3/debian/changelog	2021-10-30 18:53:28.000000000 +0200
+++ firefox-94.0+build3/debian/changelog	2021-11-09 16:05:29.000000000 +0100
@@ -1,3 +1,9 @@
+firefox (94.0+build3-0ubuntu2) jammy; urgency=medium
+
+  * Prevent crash on launch under AppArmor (LP: #1931602)
+
+ -- Dariusz Gadomski <dgadomski@ubuntu.com>  Tue, 09 Nov 2021 16:05:29 +0100
+
 firefox (94.0+build3-0ubuntu1) jammy; urgency=medium
 
   * New upstream release (94.0+build3)
diff -Nru firefox-94.0+build3/debian/usr.bin.firefox.apparmor.14.10 firefox-94.0+build3/debian/usr.bin.firefox.apparmor.14.10
--- firefox-94.0+build3/debian/usr.bin.firefox.apparmor.14.10	2021-10-19 12:49:09.000000000 +0200
+++ firefox-94.0+build3/debian/usr.bin.firefox.apparmor.14.10	2021-11-09 16:05:05.000000000 +0100
@@ -51,6 +51,11 @@
        bus=system
        path=/org/freedesktop/NetworkManager,
 
+  # used by third_party/rust/audio_thread_priority
+  dbus (send)
+       bus=system
+       path=/org/freedesktop/RealtimeKit1,
+
   # should maybe be in abstractions
   /etc/ r,
   /etc/mime.types r,
@@ -121,7 +126,8 @@
   @{PROC}/[0-9]*/status r,
   @{PROC}/filesystems r,
   @{PROC}/sys/vm/overcommit_memory r,
-  /sys/devices/pci[0-9]*/**/uevent r,
+  # prevent crash LP: #1931602
+  /sys/devices/pci[0-9]*/**/{uevent,resource,irq,class} r,
   /sys/devices/platform/**/uevent r,
   /sys/devices/pci*/**/{busnum,idVendor,idProduct} r,
   /sys/devices/pci*/**/{,subsystem_}device r,