USN-5470-1

It was discovered that the Linux kernel did not properly restrict access to the kernel debugger when booted in secure boot environments. A privileged attacker could use this to bypass UEFI Secure Boot restrictions. (CVE-2022-21499)

Aaron Adams discovered that the netfilter subsystem in the Linux kernel did not properly handle the removal of stateful expressions in some situations, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or execute arbitrary code. (CVE-2022-1966)

Minh Yuan discovered that the floppy driver in the Linux kernel contained a race condition in some situations, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2022-1836)

Ziming Zhang discovered that the netfilter subsystem in the Linux kernel did not properly validate sets with multiple ranged fields. A local attacker could use this to cause a denial of service or execute arbitrary code. (CVE-2022-1972)

References

Affected packages

Ubuntu:20.04:LTS / linux-oem-5.14

Package

Name: linux-oem-5.14
Purl: pkg:deb/ubuntu/linux-oem-5.14@5.14.0-1042.47?arch=source&distro=focal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

5.14.0-1042.47

Affected versions

5.*

5.14.0-1004.4

5.14.0-1005.5

5.14.0-1007.7

5.14.0-1008.8

5.14.0-1010.10

5.14.0-1011.11

5.14.0-1013.13

5.14.0-1018.19

5.14.0-1020.22

5.14.0-1022.24

5.14.0-1024.26

5.14.0-1027.30

5.14.0-1029.32

5.14.0-1031.34

5.14.0-1032.35

5.14.0-1033.36

5.14.0-1034.37

5.14.0-1036.40

5.14.0-1038.42

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "linux-buildinfo-5.14.0-1042-oem",
            "binary_version": "5.14.0-1042.47"
        },
        {
            "binary_name": "linux-headers-5.14.0-1042-oem",
            "binary_version": "5.14.0-1042.47"
        },
        {
            "binary_name": "linux-image-unsigned-5.14.0-1042-oem",
            "binary_version": "5.14.0-1042.47"
        },
        {
            "binary_name": "linux-modules-5.14.0-1042-oem",
            "binary_version": "5.14.0-1042.47"
        },
        {
            "binary_name": "linux-modules-iwlwifi-5.14.0-1042-oem",
            "binary_version": "5.14.0-1042.47"
        },
        {
            "binary_name": "linux-oem-5.14-headers-5.14.0-1042",
            "binary_version": "5.14.0-1042.47"
        },
        {
            "binary_name": "linux-oem-5.14-tools-5.14.0-1042",
            "binary_version": "5.14.0-1042.47"
        },
        {
            "binary_name": "linux-oem-5.14-tools-host",
            "binary_version": "5.14.0-1042.47"
        },
        {
            "binary_name": "linux-tools-5.14.0-1042-oem",
            "binary_version": "5.14.0-1042.47"
        }
    ],
    "availability": "No subscription required"
}

Database specific

cves_map

{
    "ecosystem": "Ubuntu:20.04:LTS",
    "cves": [
        {
            "id": "CVE-2022-1836",
            "severity": [
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        },
        {
            "id": "CVE-2022-1966",
            "severity": [
                {
                    "type": "Ubuntu",
                    "score": "high"
                }
            ]
        },
        {
            "id": "CVE-2022-1972",
            "severity": [
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        },
        {
            "id": "CVE-2022-21499",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H"
                },
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "high"
                }
            ]
        }
    ]
}