An exploitable information disclosure vulnerability exists in the get_dnode_of_data functionality of F2fs-Tools F2fs.Fsck 1.13. A specially crafted f2fs filesystem can cause information disclosure resulting in a information disclosure. An attacker can provide a malicious file to trigger this vulnerability.

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-093586 advisory.

    An exploitable information disclosure vulnerability exists in the get_dnode_of_data functionality of F2fs-     Tools F2fs.Fsck 1.13. A specially crafted f2fs filesystem can cause information disclosure resulting in a     information disclosure. An attacker can provide a malicious file to trigger this vulnerability.

Tenable has extracted the preceding description block directly from the Unity Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - An exploitable information disclosure vulnerability exists in the get_dnode_of_data functionality of F2fs-     Tools F2fs.Fsck 1.13. A specially crafted f2fs filesystem can cause information disclosure resulting in a     information disclosure. An attacker can provide a malicious file to trigger this vulnerability.
    (CVE-2020-6104)

Note that Nessus relies on the presence of the package as reported by the vendor.

There are packages installed that are affected by multiple vulnerabilities referenced in the following CVEs:

  - An exploitable information disclosure vulnerability exists in the get_dnode_of_data functionality of F2fs-
    Tools F2fs.Fsck 1.13. A specially crafted f2fs filesystem can cause information disclosure resulting in a
    information disclosure. An attacker can provide a malicious file to trigger this vulnerability.
    (CVE-2020-6104)

  - An exploitable code execution vulnerability exists in the multiple devices functionality of F2fs-Tools
    F2fs.Fsck 1.13. A specially crafted f2fs filesystem can cause Information overwrite resulting in a code
    execution. An attacker can provide a malicious file to trigger this vulnerability. (CVE-2020-6105)

  - 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. (CVE-2020-6106)

  - An exploitable information disclosure vulnerability exists in the dev_read functionality of F2fs-Tools
    F2fs.Fsck 1.13. A specially crafted f2fs filesystem can cause an uninitialized read resulting in an
    information disclosure. An attacker can provide a malicious file to trigger this vulnerability.
    (CVE-2020-6107)

  - An exploitable code execution vulnerability exists in the fsck_chk_orphan_node functionality of F2fs-Tools
    F2fs.Fsck 1.13. A specially crafted f2fs filesystem can cause a heap buffer overflow resulting in a code
    execution. An attacker can provide a malicious file to trigger this vulnerability. (CVE-2020-6108)

The remote host is affected by the vulnerability described in GLSA-202101-26 (f2fs-tools: Multiple vulnerabilities)

    Multiple vulnerabilities have been discovered in f2fs-tools. Please       review the CVE identifiers referenced below for details.
  Impact :

    Please review the referenced CVE identifiers for details.
  Workaround :

    There is no known workaround at this time.

ID	Name	Product	Family	Type	Severity
340488	Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: f2fs-tools (UTSA-2026-093586)	Nessus	Unity Linux Local Security Checks	Local	medium
255636	Linux Distros Unpatched Vulnerability : CVE-2020-6104	Nessus	Misc.	Local	medium
423896	Alpine: f2fs-tools: security update to 1.14.0-r0	Tenable Cloud Security	Alpine Linux Local Security Checks	Local	high
423896	Alpine: f2fs-tools: security update to 1.14.0-r0	Tenable Self-Hosted Container Security	Alpine Linux Local Security Checks	Local	high
145424	GLSA-202101-26 : f2fs-tools: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	Local	high

Detections

Analytics

CVE-2020-6104

medium

Tenable Plugins

medium

medium

high

high

high