An exploitable information disclosure vulnerability exists in the init_node_manager functionality of F2fs-Tools F2fs.Fsck 1.12 and 1.13.

published 2020-10-15 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-27260

cvss: 4.4; version 3.0, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 1.5%; EPSS 1.5% chance of exploitation in 30 days, percentile 74%
public exploits: 0; none known

An exploitable information disclosure vulnerability exists in the init_node_manager functionality of F2fs-Tools F2fs.Fsck 1.12 and 1.13. A specially crafted filesystem can be used to disclose information. An attacker can provide a malicious file to trigger this vulnerability.

Patch / fix

fixed in 1 distros 2

f2fs-tools_project f2fs-tools 1.14.0

debian alpine

f2fs-tools Debian 14, Debian 13, Debian 12 1.14.0-1

debian advisories DEBIAN-CVE-2020-6106

f2fs-tools Alpine 3.24, Alpine 3.23, Alpine 3.22 +9 more 1.14.0-r0

alpine advisories ALPINE-CVE-2020-6106

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2020-6106 updated 2025-11-21 cvss 4.4

f2fs-tools: specially crafted filesystem can be used to disclose information

Red Hat All currently supported Red Hat products
not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.51% chance of exploitation in the next 30 days, higher than 74% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

talosintelligence.com https://talosintelligence.com/vulnerability_reports/TALOS-2020-1048 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	3.0	4.4	CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
NVD	3.1	5.5	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
NVD	2.0	4.3	AV:N/AC:M/Au:N/C:P/I:N/A:N

Affected products

n/a F2fs-Tools

Classification

Weakness

CWE-131 Incorrect Calculation of Buffer Size
CWE-125 Out-of-bounds Read

References

talosintelligence.com /vulnerability_reports/TALOS-2020-1048
exploit, technical-description, third-party-advisory
security.gentoo.org /glsa/202101-26
vendor-advisory, third-party-advisory

Sources

CVE List CVE-2020-6106
NVD CVE-2020-6106

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary