CVE-2022-21819

CVE-2022-21819 is a high-severity vulnerability affecting NVIDIA Jetson Linux distributions, including Jetson Nano. An unprivileged attacker with physical access can exploit an IOMMU configuration error to gain direct read/write access to the entire system address space via the PCI bus. This can lead to denial of service, code execution, privilege escalation, and compromise of data integrity and confidentiality. While the CVSS score is 7.6 (High), there is no evidence of active exploitation, and no public exploit code or Metasploit modules are available. Community discussion and media coverage are minimal, with only one article detailing a proof-of-concept attack.