CVE-2026-97438 Linux kernel fs/ntfs3 - Out of Bounds Read

Linux kernel fs/ntfs3 contains a buffer overflow caused by improper validation of NTFS directory index entry key_size, letting attackers trigger out-of-bounds read during directory lookup, exploit requires crafted malformed NTFS directory entries.

CVSS base score 7.1 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.13% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Out of Bounds Read
Impact
Information Disclosure, Denial Of Service
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
Published
24 September 2026
Updated
15 October 2026

Vendor fix

Update to the latest Linux kernel version containing the fix for NTFS index entry validation.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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