CVE-2026-72175 Linux CVE debrief

Who should care

Linux kernel users and administrators, particularly those responsible for maintaining and securing Linux-based systems, should be aware of this vulnerability and take necessary actions to protect their systems. This includes reviewing system configurations, applying patches, and monitoring for potential exploits. Affected operator, platform, vulnerability-management, and security-team impact need to be considered when addressing this vulnerability. Compensating controls for exposed systems should be reviewed while remediation is scheduled and verified. Relevant monitoring, detection, and logs for exposed assets need to be checked, and exceptions tracked and retested before closing the item. The vulnerability has been resolved, but users need to apply patches and monitor for potential exploits. The CVE record was published on 2026-08-15T06:21:35.677Z and has not been modified since then. Affected product deployments need to be identified, and owners assigned for follow-up. Official advisories or CVE records should be reviewed to validate affected scope, severity, and vendor guidance. Linux kernel version and configuration need to be verified to ensure that the patch has been applied correctly. Security teams should track exceptions, retest remediated assets, and close the item only after evidence is documented. The vulnerability affects Linux kernel users and administrators who need to apply patches and verify Linux kernel version and configuration to protect their systems. The vulnerability has been resolved, but users need to apply patches and monitor for potential exploits. The CVE record was published on 2026-08-15T06:21:35.677Z and has not been modified since then. Affected product deployments need to be identified, and owners assigned for follow-up. Official advisories or CVE records should be reviewed to validate affected scope, severity, and vendor guidance. Linux kernel version and configuration need to be verified to ensure that the patch has been applied correctly. Security teams should track exceptions, retest remediated assets, and close the item only after evidence is documented. The vulnerability affects Linux kernel users and administrators who (

Technical summary

The Linux kernel has a vulnerability in fs/proc/task_mmu that has been resolved. This vulnerability relates to a race condition in the make_uffd_wp_huge_pte() function, which could lead to the loss of hardware Dirty/Accessed updates when PAGEMAP_SCAN write-protects a hugetlb PTE. The vulnerability has been fixed by adding a missing huge_ptep_modify_prot_start() call to ensure that the hardware may not set Dirty or Accessed in the live PTE between the original read and the commit. Linux kernel users and administrators should apply patches and verify Linux kernel version and configuration to protect their systems.

Defensive priority

Apply Linux kernel updates to address vulnerability in fs/proc/task_mmu.

Recommended defensive actions

• Apply Linux kernel updates
• Verify Linux kernel version and configuration
• Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance
• 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
• Track exceptions, retest remediated assets, and close the item only after evidence is documented

Evidence notes

The Linux kernel vulnerability CVE-2026-72175, affecting fs/proc/task_mmu, has been resolved. Evidence is limited; verify Linux kernel version and configuration. Additional verification tasks include reviewing the official advisory, checking for affected product deployments, and tracking exceptions.

Official resources