USN-4947-1

Kiyin (尹亮) discovered that the x25 implementation in the Linux kernel contained overflows when handling addresses from user space. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2020-35519)

It was discovered that the fastrpc driver in the Linux kernel did not prevent user space applications from sending kernel RPC messages. A local attacker could possibly use this to gain elevated privileges. (CVE-2021-28375)

It was discovered that the TIPC protocol implementation in the Linux kernel did not properly validate passed encryption key sizes. A local attacker could use this to cause a denial of service (system crash). (CVE-2021-29646)

It was discovered that a race condition existed in the netfilter subsystem of the Linux kernel when replacing tables. A local attacker could use this to cause a denial of service (system crash). (CVE-2021-29650)

Arnd Bergmann discovered that the video4linux subsystem in the Linux kernel did not properly deallocate memory in some situations. A local attacker could use this to cause a denial of service (memory exhaustion). (CVE-2021-30002)

References

Affected packages

Ubuntu:20.04:LTS / linux-oem-5.6

Package

Name: linux-oem-5.6
Purl: pkg:deb/ubuntu/linux-oem-5.6@5.6.0-1056.60?arch=source&distro=focal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

5.6.0-1056.60

Affected versions

5.*

5.6.0-1007.7

5.6.0-1008.8

5.6.0-1010.10

5.6.0-1011.11

5.6.0-1013.13

5.6.0-1017.17

5.6.0-1018.18

5.6.0-1020.20

5.6.0-1021.21

5.6.0-1023.23

5.6.0-1026.26

5.6.0-1027.27

5.6.0-1028.28

5.6.0-1031.32

5.6.0-1032.33

5.6.0-1033.35

5.6.0-1034.36

5.6.0-1035.37

5.6.0-1036.39

5.6.0-1039.43

5.6.0-1042.46

5.6.0-1047.51

5.6.0-1048.52

5.6.0-1050.54

5.6.0-1052.56

5.6.0-1053.57

5.6.0-1054.58

5.6.0-1055.59

Ecosystem specific

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "5.6.0-1056.60",
            "binary_name": "linux-buildinfo-5.6.0-1056-oem"
        },
        {
            "binary_version": "5.6.0-1056.60",
            "binary_name": "linux-headers-5.6.0-1056-oem"
        },
        {
            "binary_version": "5.6.0-1056.60",
            "binary_name": "linux-image-unsigned-5.6.0-1056-oem"
        },
        {
            "binary_version": "5.6.0-1056.60",
            "binary_name": "linux-modules-5.6.0-1056-oem"
        },
        {
            "binary_version": "5.6.0-1056.60",
            "binary_name": "linux-oem-5.6-headers-5.6.0-1056"
        },
        {
            "binary_version": "5.6.0-1056.60",
            "binary_name": "linux-oem-5.6-tools-5.6.0-1056"
        },
        {
            "binary_version": "5.6.0-1056.60",
            "binary_name": "linux-oem-5.6-tools-host"
        },
        {
            "binary_version": "5.6.0-1056.60",
            "binary_name": "linux-tools-5.6.0-1056-oem"
        }
    ]
}

Database specific

cves_map

{
    "ecosystem": "Ubuntu:20.04:LTS",
    "cves": [
        {
            "id": "CVE-2020-35519",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        },
        {
            "id": "CVE-2021-28375",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        },
        {
            "id": "CVE-2021-29646",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        },
        {
            "id": "CVE-2021-29650",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        },
        {
            "id": "CVE-2021-30002",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        }
    ]
}