CVE Database›Document archive›CVE-2026-99171

CVE-2026-99171

kernel: ntfs3: free the sbi after a grace period

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Severity

Moderate

Red Hat Product Security

4.1

CVSS 3.1

Review impact separately from score.

Published · October 28, 2026

Updated · October 29, 2026

Description

A flaw was found in the Linux kernel's NTFS3 file system driver. When an NTFS file system is mounted with case-insensitive naming, internal file system structures can be released prematurely while a lookup operation is still active. A local attacker can exploit this race condition to cause a use-after-free condition, where memory is accessed after being freed, resulting in a Denial of Service (DoS) through a kernel crash or potential memory corruption.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 4.1
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H

CWE-825 · Expired Pointer Dereference