CVE-2026-46326 Linux CVE debrief

Who should care

Linux kernel maintainers, Linux distribution maintainers, and users of affected kernel versions should assess exposure and prioritize verification and remediation efforts. This includes operators managing affected systems, platform administrators, vulnerability management teams, and security teams responsible for ensuring the security and integrity of Linux-based infrastructure.

Why it matters

CVE-2026-46326 is a high-severity vulnerability in the Linux kernel that requires verification of affected systems and prompt patching to prevent potential security consequences.

• Verify affected kernel versions in inventory and prioritize patching.
• Assess exposure based on system configurations and kernel versions.
• Monitor system logs for potential security incidents related to this vulnerability.
• Review and apply patches provided by the Linux kernel maintainers.

Technical summary

The Linux kernel vulnerability (CVE-2026-46326) involves improper initialization of the spi_transfer struct in the iio: pressure: mprls0025pa component. Affected kernel versions include 6.9 through 6.12.75, 6.13 through 6.18.14, and 6.19 through 6.19.4. The CVSS score is 8.4, indicating a high severity vulnerability. This issue could potentially lead to security consequences if not addressed. Linux kernel maintainers and users should assess exposure and prioritize verification of affected systems, especially those using kernel versions 6.9 through 6.12.75, 6.13 through 6.18.14, and 6.19 through 6.19.4.

Defensive priority

Linux kernel maintainers and users should assess exposure and prioritize verification of affected systems, especially those using kernel versions 6.9 through 6.12.75, 6.13 through 6.18.14, and 6.19 through 6.19.4.

Recommended defensive actions

• Review and apply patches provided by the Linux kernel maintainers for the affected versions.
• Verify system exposure by checking the kernel version and comparing it to the affected ranges.
• Update to a non-vulnerable kernel version if possible.
• Monitor system logs for potential security incidents related to this vulnerability.
• Assess exposure based on system configurations and kernel versions.
• Prioritize patching based on system criticality and potential impact.
• Track patch deployment and verify remediation for affected systems.

Evidence notes

The CVE record and NVD details provide information on the vulnerability and affected kernel versions. However, the corpus does not establish specific exploitation or impact instances, requiring verification from official sources.

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.