CVE-2026-58755 Google CVE debrief

Who should care

System administrators and security teams responsible for systems with elevated privileges should assess exposure and prioritize patching. They should also review system configurations, monitor system logs, and implement compensating controls to mitigate potential risks. Additionally, they should perform vulnerability scanning to identify potential exposure and conduct regular security audits to detect potential vulnerabilities.

Why it matters

CVE-2026-58755 is a local escalation of privilege vulnerability in the arm-smmu-v3.c file. System administrators and security teams should prioritize verifying and applying patches, reviewing system configurations, and monitoring system logs to mitigate potential risks.

• Verification of patch application is required to prevent potential exploitation
• System administrators must review configurations for elevated privileges to limit potential impact
• Monitoring system logs is necessary to detect potential exploitation attempts

Technical summary

A logic error in the smmu_install_nested_ste function of arm-smmu-v3.c could lead to local escalation of privilege with System execution privileges needed. The CVE has a CVSS score of 6.7 and a severity of MEDIUM. The vulnerability affects systems with elevated privileges, and its exploitation could lead to unauthorized access. The arm-smmu-v3.c file's smmu_install_nested_ste function contains a logic error that could lead to local escalation of privilege. System administrators and security teams should prioritize verifying and applying patches, reviewing system configurations, and monitoring system logs to mitigate potential risks.

Defensive priority

System administrators and security teams should prioritize verifying and applying patches for this vulnerability, especially for systems with elevated privileges.

Recommended defensive actions

• Verify and apply patches for the arm-smmu-v3.c file
• Review system configurations for elevated privileges
• Monitor system logs for potential exploitation attempts
• Perform vulnerability scanning to identify potential exposure
• Implement compensating controls for exposed systems
• Conduct regular security audits to detect potential vulnerabilities
• Track and analyze system logs for suspicious activity

Evidence notes

The CVE record and NVD entry provide details on the vulnerability, including its CVSS score and potential impact. However, specific version information and remediation steps are limited. The arm-smmu-v3.c file's smmu_install_nested_ste function contains a logic error that could lead to local escalation of privilege. System administrators and security teams should verify and apply patches, review system configurations, and monitor system logs to mitigate potential risks. The vulnerability has a CVSS score of 6.7 and a severity of MEDIu

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.