CVE-2026-89829 Linux Kernel - Data Integrity & Denial of Service

Linux kernel contains a logic flaw in f2fs_sanity_check_node_footer due to incorrect nid checking caused by not passing folio->index, letting attackers potentially cause data integrity issues, exploit requires local access.

CVSS base score 7.8 /10
High
CISA KEV
Not listed
Public exploit
None known
EPSS
0.17% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Data Integrity
Impact
Data Tampering, Denial Of Service
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
16 September 2026
Updated
15 October 2026

Vendor fix

Update to the latest Linux kernel version containing the fix.

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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