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Enabling non-executable memfds [LWN.net]

The memfd interface is a bit of a strange and Linux-specific beast; it was initially created to support the secure passing of data between cooperating processes on a single system. It has since gained other roles, but it may still come as a surprise to some to learn that memory regions created for memfds, unlike almost any other data area, have the execute permission bit set. That can facilitate attacks; this patch set from Jeff Xu proposes an addition to the memfd API to close that hole.
Jonathan Corbet Peter Xu Jeff Xu Paul Moore
Source: lwn.net

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