Thank you for reporting a bug.
A few things:
- unconfined apps should be able to read /dev/random-- it should be:
$ ls -l /dev/urandom
crw-rw-rw- 1 root root 1, 9 May 8 17:55 /dev/urandom
- confined apps should have read permissions on /dev/urandom. It is allowed by
the apparmor policy and added to the devices cgroup via the launcher.
- the getrandom() syscall is not recognized by libseccomp so it will be denied
by default. This is in the process of being fixed and is bug #1450642
It is unclear why you believe the app doesn't have read access to the
device? Is this a confined app (ie, installed via a snap)? An elf
executable you copied over to your device? Something else?
** Package changed: ubuntu => snappy-ubuntu
** Changed in: snappy-ubuntu
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1452402
Title:
getrandom() stucks when process has no read permission on /dev/urandom
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