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Versions Affected : All versions prior to TrueNAS 13.0-U2


A particular case of memory sharing is mishandled in the virtual memory system. This is very similar to SA-21:08.vm, but with a different root cause.

An unprivileged local user process can maintain a mapping of a page after it is freed, allowing that process to read private data belonging to other processes or the kernel.


No workaround is available.


  • Upgrade to TrueNAS 13.0-U2 or later.


Further information