CVE-2026-99171
kernel: ntfs3: free the sbi after a grace period
Severity
ModerateRed Hat Product Security
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 · 4.1CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H
CWE-825 · Expired Pointer Dereference