Versions Affected : All versions prior to TrueNAS 13.0-U2
When dumping core and saving process information, proc_getargv() might return an sbuf which have a sbuf_len() of 0 or -1, which is not properly handled.
An out-of-bound read can happen when user constructs a specially crafted ps_string, which in turn can cause the kernel to crash.
The system administrator can workaround this issue by disabling coredump. This can be done by adding:
to /etc/sysctl.conf and run
service sysctl start
- Upgrade to TrueNAS 13.0-U2 or later.