What’s Vulnerable › Vulnerabilities

CVE-2026-89829: f2fs: fix to pass folio->index to f2fs_sanity_check_node_footer()

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-16 · updated 2026-10-19

Description

In the Linux kernel, the following vulnerability has been resolved: f2fs: fix to pass folio->index to f2fs_sanity_check_node_footer() Otherwise in f2fs_sanity_check_node_footer(), it will check the same nid incorrectly.

Affected products

• Linux kernel: from 6.18.13 before 6.18.51; from 6.19.3 before 6.20; 7.0 — fixed in 6.18.51, 6.20, 7.3

How to fix

Upgrade to a fixed version: Linux kernel 6.18.51, 6.20, 7.3. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/0b196c07407f48a41cd9741cf53e10cb1e23d2e5
• https://git.kernel.org/stable/c/7e188e9f9437ab47c3237d609f1b26348d6fea1a
• https://git.kernel.org/stable/c/a984446aa9d5b787afa3023fc7b44017b80fe3bc

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