CVE-2026-64528 Linux CVE debrief

Who should care

Defenders responsible for Linux kernel systems using the samsung tty serial driver should assess exposure and prioritize patching. Defenders should prioritize verifying and applying patches for Linux kernel versions affected by this vulnerability, particularly those using the samsung tty serial driver. Operators, platform administrators, vulnerability management teams, and security teams should review system configurations and ensure console flow control.

Why it matters

A deadlock vulnerability in the Linux kernel's tty serial samsung driver requires verification and patching to prevent potential system issues.

• Verify and apply patches to prevent potential deadlocks
• Review system configurations to ensure console flow control is properly handled

Technical summary

The Linux kernel's tty serial samsung driver has a deadlock vulnerability due to redundant port lock acquisition in rx helper functions when console flow control is enabled. This has been resolved by removing the redundant lock acquisition. The vulnerability affects Linux kernel systems using the samsung tty serial driver, and defenders should assess exposure and prioritize patching. Defenders should prioritize verifying and applying patches for Linux kernel versions affected by this vulnerability, particularly those using the samsung tty serial driver.

Defensive priority

Defenders should prioritize verifying and applying patches for Linux kernel versions affected by this vulnerability, particularly those using the samsung tty serial driver.

Recommended defensive actions

• Verify Linux kernel versions and apply patches for the samsung tty serial driver
• Review system configurations for console flow control usage
• Monitor system logs for potential deadlock occurrences
• 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
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up
• Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance

Evidence notes

The CVE record and NVD entry provide details on the vulnerability, but do not specify affected versions or explicit exploitation. Kernel.org references provide source code changes. Defenders should verify Linux kernel versions and apply patches for the samsung tty serial driver. The vulnerability requires verification and patching to prevent potential system issues.

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.