Description

NVIDIA Infrastructure Controller for Linux contains a vulnerability where an attacker could cause exposure of sensitive system information due to uncleared debug information. A successful exploit of this vulnerability might lead to information disclosure.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "4.1",
  "pubDate": "2026-09-22T15:17:13.063Z",
  "pubdate": "2026-09-22T15:17:13.063Z",
  "executiveSummary": "The NVIDIA Infrastructure Controller for Linux is susceptible to an information disclosure vulnerability stemming from the persistence of sensitive debug information.\nThis vulnerability is categorized as an improper data sanitization issue, wherein debugging artifacts—potentially containing memory addresses, register states, or configuration data—remain uncleared within the system environment.\nThe primary impact is the unauthorized exposure of sensitive system information, which could facilitate reconnaissance for more sophisticated attacks or provide lateral movement intelligence.\nExploitation does not inherently require complex execution primitives; rather, it relies on the attacker's ability to access the leaked artifacts residing in the controller's debug interface or logs.\nThis vulnerability poses a significant risk to confidentiality, potentially bypassing system-level security controls by exposing internal operational data to unprivileged or unauthorized local actors.\nAttackers capable of interfacing with the controller's debug mechanisms can exfiltrate this residual information, significantly lowering the barrier for subsequent exploitation vectors.",
  "technicalDetails": "The vulnerability originates from the NVIDIA Infrastructure Controller's handling of debug-level diagnostic procedures. During routine operations or fault scenarios, the controller generates verbose debug outputs designed for troubleshooting purposes.\nThe root cause is identified as the failure to properly purge or sanitize these memory structures and diagnostic buffers once the debug operations conclude. Consequently, residual sensitive data is cached within the driver or controller memory space, remaining accessible beyond the duration of the intended diagnostic window.\nThe exploitation flow involves an actor identifying the specific memory buffers or interface endpoints where the stale debug data is stored. Because the information is not cleared after use, an attacker can leverage standard system calls or exposed driver interfaces to read the memory segments containing the lingering debug information.\nIn terms of attack methodology, if the system configuration allows for read access to the relevant debug interfaces or log files, the attacker can perform an iterative read operation to extract system memory state, internal kernel pointers, or sensitive configuration metadata. This does not necessarily require kernel-level privileges, provided the interface permissions are improperly configured or globally readable.\nThe vulnerability persists due to a breakdown in the lifecycle management of diagnostic objects. When the controller transitions from a debug state to a production state, the lack of an explicit zero-fill or memory-scrubbing routine on the diagnostic buffer ensures that the sensitive data remains in a 'stale' but readable state. This behavior is particularly hazardous in multi-tenant or shared-compute environments where an attacker might attempt to correlate memory contents to infer internal system operations or bypass ASLR (Address Space Layout Randomization) via the leaked pointer information.\nThe post-exploitation impact includes the potential for increased reconnaissance capabilities. By harvesting the leaked system information, an attacker can gain deeper insight into the host's kernel memory layout, firmware-level configurations, or other proprietary system parameters. This level of insight significantly aids in the development of custom exploits, allowing the attacker to map the target environment with high precision before attempting privilege escalation or persistent implantation."
}