USN-4911-1

It was discovered that the Nouveau GPU driver in the Linux kernel did not properly handle error conditions in some situations. A local attacker could use this to cause a denial of service (system crash). (CVE-2020-25639)

Jan Beulich discovered that the Xen netback backend in the Linux kernel did not properly handle certain error conditions under paravirtualization. An attacker in a guest VM could possibly use this to cause a denial of service (host domain crash). (CVE-2021-28038)

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 fuse user space file system implementation in the Linux kernel did not properly handle bad inodes in some situations. A local attacker could possibly use this to cause a denial of service. (CVE-2021-28950)

References

Affected packages

Ubuntu:20.04:LTS / linux-oem-5.10

Package

Name: linux-oem-5.10
Purl: pkg:deb/ubuntu/linux-oem-5.10@5.10.0-1021.22?arch=source&distro=focal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

5.10.0-1021.22

Affected versions

5.*

5.10.0-1008.9

5.10.0-1011.12

5.10.0-1013.14

5.10.0-1014.15

5.10.0-1016.17

5.10.0-1017.18

5.10.0-1019.20

Ecosystem specific

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "linux-buildinfo-5.10.0-1021-oem",
            "binary_version": "5.10.0-1021.22"
        },
        {
            "binary_name": "linux-headers-5.10.0-1021-oem",
            "binary_version": "5.10.0-1021.22"
        },
        {
            "binary_name": "linux-image-unsigned-5.10.0-1021-oem",
            "binary_version": "5.10.0-1021.22"
        },
        {
            "binary_name": "linux-modules-5.10.0-1021-oem",
            "binary_version": "5.10.0-1021.22"
        },
        {
            "binary_name": "linux-oem-5.10-headers-5.10.0-1021",
            "binary_version": "5.10.0-1021.22"
        },
        {
            "binary_name": "linux-oem-5.10-tools-5.10.0-1021",
            "binary_version": "5.10.0-1021.22"
        },
        {
            "binary_name": "linux-oem-5.10-tools-host",
            "binary_version": "5.10.0-1021.22"
        },
        {
            "binary_name": "linux-tools-5.10.0-1021-oem",
            "binary_version": "5.10.0-1021.22"
        }
    ]
}

Database specific

cves_map

{
    "cves": [
        {
            "id": "CVE-2020-25639",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "low"
                }
            ]
        },
        {
            "id": "CVE-2021-28038",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/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-2021-28950",
            "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"
                }
            ]
        }
    ],
    "ecosystem": "Ubuntu:20.04:LTS"
}