Ubuntu Security Notice 2988-1 - Robie Basak discovered that LXD incorrectly set permissions when setting up a loop based ZFS pool. A local attacker could use this issue to copy and read the data of any LXD container. Robie Basak discovered that LXD incorrectly set permissions when switching an unprivileged container into privileged mode. A local attacker could use this issue to access any world readable path in the container directory, including setuid binaries. Various other issues were also addressed.
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