USN-5279-1

It was discovered that util-linux incorrectly handled unmounting FUSE filesystems. A local attacker could possibly use this issue to unmount FUSE filesystems belonging to other users.

References

Affected packages

Ubuntu:20.04:LTS / util-linux

Package

Name: util-linux
Purl: pkg:deb/ubuntu/util-linux@2.34-0.1ubuntu9.3?arch=source&distro=focal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

2.34-0.1ubuntu9.3

Affected versions

2.*

2.34-0.1ubuntu2

2.34-0.1ubuntu4

2.34-0.1ubuntu5

2.34-0.1ubuntu6

2.34-0.1ubuntu7

2.34-0.1ubuntu8

2.34-0.1ubuntu9

2.34-0.1ubuntu9.1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "bsdutils",
            "binary_version": "1:2.34-0.1ubuntu9.3"
        },
        {
            "binary_name": "fdisk",
            "binary_version": "2.34-0.1ubuntu9.3"
        },
        {
            "binary_name": "libblkid-dev",
            "binary_version": "2.34-0.1ubuntu9.3"
        },
        {
            "binary_name": "libblkid1",
            "binary_version": "2.34-0.1ubuntu9.3"
        },
        {
            "binary_name": "libfdisk-dev",
            "binary_version": "2.34-0.1ubuntu9.3"
        },
        {
            "binary_name": "libfdisk1",
            "binary_version": "2.34-0.1ubuntu9.3"
        },
        {
            "binary_name": "libmount-dev",
            "binary_version": "2.34-0.1ubuntu9.3"
        },
        {
            "binary_name": "libmount1",
            "binary_version": "2.34-0.1ubuntu9.3"
        },
        {
            "binary_name": "libsmartcols-dev",
            "binary_version": "2.34-0.1ubuntu9.3"
        },
        {
            "binary_name": "libsmartcols1",
            "binary_version": "2.34-0.1ubuntu9.3"
        },
        {
            "binary_name": "libuuid1",
            "binary_version": "2.34-0.1ubuntu9.3"
        },
        {
            "binary_name": "mount",
            "binary_version": "2.34-0.1ubuntu9.3"
        },
        {
            "binary_name": "rfkill",
            "binary_version": "2.34-0.1ubuntu9.3"
        },
        {
            "binary_name": "util-linux",
            "binary_version": "2.34-0.1ubuntu9.3"
        },
        {
            "binary_name": "util-linux-locales",
            "binary_version": "2.34-0.1ubuntu9.3"
        },
        {
            "binary_name": "uuid-dev",
            "binary_version": "2.34-0.1ubuntu9.3"
        },
        {
            "binary_name": "uuid-runtime",
            "binary_version": "2.34-0.1ubuntu9.3"
        }
    ],
    "availability": "No subscription required"
}

Database specific

cves_map

{
    "cves": [
        {
            "severity": [
                {
                    "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ],
            "id": "CVE-2021-3995"
        },
        {
            "severity": [
                {
                    "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ],
            "id": "CVE-2021-3996"
        }
    ],
    "ecosystem": "Ubuntu:20.04:LTS"
}

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5279-1.json"