Kernel-level vulnerability in widely deployed Linux NTFS driver allowing privilege escalation or kernel compromise; impacts many Linux deployments.
CVE-2026-74570
Linux NTFS driver overflow enabling kernel code execution and privilege escalation
Is CVE-2026-74570 being exploited?
Not confirmed. CVE-2026-74570 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 0.31% probability of exploitation in the next 30 days.
How severe is CVE-2026-74570?
CVE-2026-74570 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-2026-74570?
Yes. A fix has been recorded for CVE-2026-74570. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-74570 affect?
CVE-2026-74570 affects Linux kernel NTFS driver (ntfs3), Linux distributions shipping vulnerable kernels, Systems mounting untrusted NTFS volumes. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-74570?
Apply kernel/vendor patches immediately; avoid mounting untrusted NTFS media.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Crafted NTFS filesystem can trigger runlist size overflow, causing kernel memory corruption enabling local privilege escalation or arbitrary kernel code execution.
Immediate action required
- affected>= 11ccc9107dc460de28af90fac1f42404d9802735 and < 57e7b8bf7b02a0140463fea786e5172cbdf2da2f
- affected>= 11ccc9107dc460de28af90fac1f42404d9802735 and < 8bed376124ab4505b70083a2b91f2c7ef6d51e24
- 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.