CVE-2026-98435 Linux CVE debrief

Who should care

Linux kernel developers and maintainers, as well as users of the EDAC altera driver, should review the driver for proper resource teardown and verify the parent device is correctly set.

Why it matters

A vulnerability in the Linux kernel EDAC altera driver could lead to improper resource teardown. Review and verification are necessary to ensure correct functionality.

• Verify resource teardown for EDAC altera driver
• Ensure correct parent device setting for devres groups and IRQ requests

Technical summary

The Linux kernel EDAC altera driver had a vulnerability where the altr_portb_setup() function incorrectly anchored devres groups and devm-managed IRQ requests to a device embedded in a copied per-port altr_edac_device_dev structure instead of the actual parent device. This could lead to improper resource teardown. The issue has been resolved by updating the devres anchor to the parent device, ensuring correct resource teardown and preventing potential issues with the EDAC altera driver. Review and verification are necessary to ensure correct functionality and to monitor for potential issues.

Defensive priority

Low priority, as the vulnerability is specific to a particular Linux kernel driver and requires local access to exploit.

Recommended defensive actions

• Review the Linux kernel EDAC altera driver for proper resource teardown
• Verify the parent device is correctly set for devres groups and IRQ requests
• Monitor for potential issues with the EDAC altera driver
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up
• Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed
• 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

Evidence notes

The CVE record and NVD entry provide limited information about the vulnerability. The Linux kernel source code references are provided, but no additional details about exploitation or impact are available.

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.