CVE record · CVE-2026-89838

f2fs: limit recovery filename logging to stored length

CVSS 7.1 HighEPSS 0.0016 · 5th percentile

Published by the CVE Program (CNA: Linux) at 16 Sept 2026, 10:31 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
Linux	Linux	affected f356fe0cba0e3523e538987916bd2acedd4e6f41 to before b8ac8b14b9d92dd2e1cb05fa8994f41f701fbf28 git affected f356fe0cba0e3523e538987916bd2acedd4e6f41 to before 450ab2e5dbe0ef6e3ed73214256565f6f003d62a git affected f356fe0cba0e3523e538987916bd2acedd4e6f41 to before 3d02c7c8446f5d6793ac67f93bf3f84bf24e3f25 git affected f356fe0cba0e3523e538987916bd2acedd4e6f41 to before e754120f8ede55cc773ade108cf7e5b17c859c46 git affected f356fe0cba0e3523e538987916bd2acedd4e6f41 to before 7ab1780074943508534343e1e5e5ab0c9ef9dd7b git affected f356fe0cba0e3523e538987916bd2acedd4e6f41 to before 35c5abccd0924b02ad34126f562d93c8d75b0831 git affected f356fe0cba0e3523e538987916bd2acedd4e6f41 to before 317d32e1a8deaf1c01c388badc667334c39e62ca git affected f356fe0cba0e3523e538987916bd2acedd4e6f41 to before 01027b2fcb74dade59fb833b51023f6593b6a9a2 git Other versions: unaffected
Linux	Linux	affected 3.11 unaffected before 3.11 semver unaffected 5.10.273 to 5.10., inclusive semver unaffected 5.15.224 to 5.15., inclusive semver unaffected 6.1.191 to 6.1., inclusive semver unaffected 6.6.160 to 6.6., inclusive semver unaffected 6.12.112 to 6.12., inclusive semver unaffected 6.18.53 to 6.18., inclusive semver unaffected 7.2.5 to 7.2., inclusive semver unaffected 7.3 to , inclusive original_commit_for_fix Other versions: affected

Identifiers: CVE-2026-89838
CNA: Linux
Tags: Linux kernel
Published: 16 Sept 2026
Updated: 30 Oct 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

The Linux kernel f2fs recovery code can read past its filename buffer and print adjacent inode data when logging a 255-byte name. Affected versions start at 3.11, and the source gives few details on what an attacker needs. Upgrade to Linux kernel 5.10.273, 5.15.224, 6.1.191, 6.6.160, or a later fixed release.

Written 12 Nov 2026.

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

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

CISA KEV Not listed.
EPSS 0.0016, the 5th percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 16 Sept 2026. New records show when each source confirmed them.

Sources

References from the CNA

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.