CVE-2026-93816

f2fs: validate inline dentry name lengths before conversion

HIGH

7.1

CVSS Score

Published: September 24, 2026 at 04:02 PM UTC

Updated: October 3, 2026 at 11:17 AM UTC

1 product affected across 1 vendorLinux Kernel

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Severity

HIGH7.1

Exploit prediction

EPSS 0.1%

Description

In the Linux kernel, the following vulnerability has been resolved: f2fs: validate inline dentry name lengths before conversion Inline dentry conversion copies names out of the inline dentry area before checking that each recorded name length fits in the available filename slots. A corrupted image can therefore make the conversion path read past the inline filename storage while building the regular dentry block. Validate each inline dentry name length against the inline filename area before copying it.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

4.7 ≤ v < 5.10.2714.7 ≤ v < 5.15.2224.7 ≤ v < 6.1.1894.7 ≤ v < 6.12.1114.7 ≤ v < 6.18.534.7 ≤ v < 6.6.1584.7 ≤ v < 7.24.7675f10bde6cc3874632a8f684df2a8a2a8ace76e

Vendor states this is fixed in 2ce0bc5853bec7cdc724477a87ea579fde664243 (fixed)

Vendor states this is fixed in 4dd81faa63fd54b9ba1a83c304e6d0bd03f1898d (fixed)

Vendor states this is fixed in 6343208fd73f3f2b8044c0922185cd13ff807693 (fixed)

Vendor states this is fixed in 6b5552449fc5acb8e6ecf045b46702b29b71165a (fixed)

Vendor states this is fixed in 7caa8a0ae94b132576c2e46e9b4fd4e0f356f373 (fixed)

Vendor states this is fixed in aee4e6de71ca77626c006166ff00f1d01ff990c9 (fixed)

Vendor states this is fixed in cfcd0e49a178b3dac2c0ece656079081dbf5da74 (fixed)

Vendor states this is fixed in 4.7 (unaffected)

Vendor states this is fixed in 5.10.271 (unaffected)

Vendor states this is fixed in 5.15.222 (unaffected)

Vendor states this is fixed in 6.1.189 (unaffected)

Vendor states this is fixed in 6.12.111 (unaffected)