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Versions Affected : All versions prior to TrueNAS 12.0-U6


The ggatec(8) daemon does not validate the size of a response before writing it to a fixed-sized buffer. This allows to overwrite the stack of ggatec(8).

A malicious ggated(8) or an attacker in a priviledged network position can overwrite the stack with crafted content and potentially execute arbitrary code.


No workaround is available.


  • Upgrade to TrueNAS 12.0-U6 or later.


Further information