CVE-2026-16313 Red Hat CVE debrief

Who should care

System administrators and security teams responsible for Red Hat Enterprise Linux 10 systems should assess exposure and apply patches or updates to mitigate the vulnerability. Additionally, operators and platform administrators who manage SCSI devices should review the vulnerability details and take necessary precautions to prevent exploitation.

Why it matters

CVE-2026-16313 is a high-severity vulnerability in sg3_utils that allows an attacker to inject arbitrary properties into the udev device database and potentially execute arbitrary commands as root. Red Hat Enterprise Linux 10 users should assess exposure and apply patches or updates to mitigate the vulnerability.

• Potential for arbitrary command execution as root when a crafted SCSI device is disconnected
• Injection of arbitrary properties into the udev device database
• Possible disruption of system operations due to unauthorized changes

Technical summary

The sg_inq command in sg3_utils, when invoked with the --export option, fails to sanitize control characters in SCSI name string fields. This flaw allows an attacker who can present a crafted SCSI device to inject arbitrary properties into the udev device database. When the device is disconnected, this could potentially allow the execution of arbitrary commands as root. The vulnerability is particularly concerning for Red Hat Enterprise Linux 10 users, who should assess their exposure and apply patches or updates to mitigate the issue.

Defensive priority

High priority for systems administrators and security teams to assess exposure and apply patches, particularly for Red Hat Enterprise Linux 10 users.

Recommended defensive actions

• Assess exposure of Red Hat Enterprise Linux 10 systems to CVE-2026-16313
• Apply patches or updates provided by Red Hat to mitigate the vulnerability
• Monitor systems for potential exploitation attempts
• Review and update udev device database configuration to prevent similar issues
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented

Evidence notes

The CVE record and NVD detail page provide information on the vulnerability, while Red Hat errata references offer potential patches and advisories for affected systems. The vulnerability is tracked as CVE-2026-16313 and has been assessed as High severity. Red Hat Enterprise Linux 10 users should assess exposure and apply patches or updates to mitigate the vulnerability. The NVD entry is currently Awaiting Analysis, and the CVE record was published on 2026-07-28T17:16:37.807Z.

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.