CVE-2026-89838 Linux kernel F2FS - Information Disclosure

Linux kernel F2FS contains an information disclosure caused by improper handling of non-NUL-terminated recovery filenames in recovery logging, letting attackers read beyond filename buffer, exploit requires local access.

CVSS base score 7.1 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.17% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Information Disclosure
Impact
Information Disclosure
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Published
16 September 2026
Updated
15 October 2026

Vendor fix

Update to the latest Linux kernel version with the fix for recovery filename logging.

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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