FreeBSD Security Advisory - Due to insufficient permission checks in the virtual memory system, a tracing process (such as a debugger) may be able to modify portions of the traced process's address space to which the traced process itself does not have write access. This error can be exploited to allow unauthorized modification of an arbitrary file to which the attacker has read access, but not write access. Depending on the file and the nature of the modifications, this can result in privilege escalation. To exploit this vulnerability, an attacker must be able to run arbitrary code with user privileges on the target system.
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