Here's a nice story of how a NFSv4 bugfix in Linux 2.6.14 around 2005 somewhat randomly changed something else and created a partial sandbox bypass in Firefox: https://bugzilla.mozilla.org/show_bug.cgi?id=1374281 … I'm still curious about the rationale for the behavior, given that Windows gets this right.
Replying to @gcpascutto
open() has a lot of combos that are UB. A sandbox needs to catch & block them all...
6:12 AM - 3 Feb 2018
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