Linux kernel bug affects widely deployed kernels and hosts that mount NTFS; can enable local priv esc/DoS and impacts many organizations.
CVE-2026-72208
Linux kernel NTFS EA parsing bounds-check bug enables out-of-bounds access
Is CVE-2026-72208 being exploited?
Not confirmed. CVE-2026-72208 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.52% probability of exploitation in the next 30 days.
How severe is CVE-2026-72208?
CVE-2026-72208 is rated Critical with a CVSS score of 9.8. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-72208?
Yes. A fix has been recorded for CVE-2026-72208. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-72208 affect?
CVE-2026-72208 affects Linux kernel NTFS module (ntfs_ea_lookup, ntfs_listxattr), All Linux distributions prior to vendor patch, Hosts/VMs mounting NTFS volumes or handling guest disks. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-72208?
Apply vendor kernel updates immediately; avoid mounting untrusted NTFS volumes.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Crafted NTFS volumes can trigger OOB access during EA parsing when mounted, causing crashes, info leak, or local privilege escalation.
Immediate action required
- affected>= c451d34ae14201c2bb40652bf74072a79ff82f7d and < d9d9925de1d8f233cc60d3dc356e12f232f97c15
- affected>= c451d34ae14201c2bb40652bf74072a79ff82f7d and < 937282f7d15b593d0be765fa2ced164130ec87f7
- affected7.1
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.