CVE-2026-93816

f2fs: validate inline dentry name lengths before conversion

State: Published
Severity: 7.1 High
Published: Sep 24, 2026
Updated: Oct 3, 2026
Reserved: Sep 18, 2026

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.

Scores

CVSS	Score	Vector	Source
3.1	7.1 High	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H	Linux

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	675f10bde6cc3874632a8f684df2a8a2a8ace76e to before 6b5552449fc5acb8e6ecf045b46702b29b71165aAffected 675f10bde6cc3874632a8f684df2a8a2a8ace76e to before 6343208fd73f3f2b8044c0922185cd13ff807693Affected 675f10bde6cc3874632a8f684df2a8a2a8ace76e to before 4dd81faa63fd54b9ba1a83c304e6d0bd03f1898dAffected 675f10bde6cc3874632a8f684df2a8a2a8ace76e to before aee4e6de71ca77626c006166ff00f1d01ff990c9Affected 675f10bde6cc3874632a8f684df2a8a2a8ace76e to before 2ce0bc5853bec7cdc724477a87ea579fde664243Affected 675f10bde6cc3874632a8f684df2a8a2a8ace76e to before 7caa8a0ae94b132576c2e46e9b4fd4e0f356f373Affected 675f10bde6cc3874632a8f684df2a8a2a8ace76e to before cfcd0e49a178b3dac2c0ece656079081dbf5da74Affected
LinuxLinux	4.7Affected before 4.7Not affected 5.10.271 through 5.10.Not affected 5.15.222 through 5.15.Not affected 6.1.189 through 6.1.Not affected 6.6.158 through 6.6.Not affected 6.12.111 through 6.12.Not affected 6.18.53 through 6.18.Not affected 7.2 and laterNot affected

Product

Versions

LinuxLinux

675f10bde6cc3874632a8f684df2a8a2a8ace76e to before 6b5552449fc5acb8e6ecf045b46702b29b71165aAffected
675f10bde6cc3874632a8f684df2a8a2a8ace76e to before 6343208fd73f3f2b8044c0922185cd13ff807693Affected
675f10bde6cc3874632a8f684df2a8a2a8ace76e to before 4dd81faa63fd54b9ba1a83c304e6d0bd03f1898dAffected
675f10bde6cc3874632a8f684df2a8a2a8ace76e to before aee4e6de71ca77626c006166ff00f1d01ff990c9Affected
675f10bde6cc3874632a8f684df2a8a2a8ace76e to before 2ce0bc5853bec7cdc724477a87ea579fde664243Affected
675f10bde6cc3874632a8f684df2a8a2a8ace76e to before 7caa8a0ae94b132576c2e46e9b4fd4e0f356f373Affected
675f10bde6cc3874632a8f684df2a8a2a8ace76e to before cfcd0e49a178b3dac2c0ece656079081dbf5da74Affected

LinuxLinux

4.7Affected
before 4.7Not affected
5.10.271 through 5.10.*Not affected
5.15.222 through 5.15.*Not affected
6.1.189 through 6.1.*Not affected
6.6.158 through 6.6.*Not affected
6.12.111 through 6.12.*Not affected
6.18.53 through 6.18.*Not affected
7.2 and laterNot affected

References

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.