USN-4983-1

Piotr Krysiuk discovered that the eBPF implementation in the Linux kernel did not properly enforce limits for pointer operations. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-33200)

Piotr Krysiuk and Benedict Schlueter discovered that the eBPF implementation in the Linux kernel performed out of bounds speculation on pointer arithmetic. A local attacker could use this to expose sensitive information. (CVE-2021-29155)

Piotr Krysiuk discovered that the eBPF implementation in the Linux kernel did not properly prevent speculative loads in certain situations. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2021-31829)

Reiji Watanabe discovered that the KVM VMX implementation in the Linux kernel did not properly prevent user space from tampering with an array index value, leading to a potential out-of-bounds write. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-3501)

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@5.10.0-1029.30?arch=source&distro=focal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

5.10.0-1029.30

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

5.10.0-1021.22

5.10.0-1022.23

5.10.0-1023.24

5.10.0-1025.26

5.10.0-1026.27

Ecosystem specific

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "linux-buildinfo-5.10.0-1029-oem",
            "binary_version": "5.10.0-1029.30"
        },
        {
            "binary_name": "linux-headers-5.10.0-1029-oem",
            "binary_version": "5.10.0-1029.30"
        },
        {
            "binary_name": "linux-image-unsigned-5.10.0-1029-oem",
            "binary_version": "5.10.0-1029.30"
        },
        {
            "binary_name": "linux-modules-5.10.0-1029-oem",
            "binary_version": "5.10.0-1029.30"
        },
        {
            "binary_name": "linux-oem-5.10-headers-5.10.0-1029",
            "binary_version": "5.10.0-1029.30"
        },
        {
            "binary_name": "linux-oem-5.10-tools-5.10.0-1029",
            "binary_version": "5.10.0-1029.30"
        },
        {
            "binary_name": "linux-oem-5.10-tools-host",
            "binary_version": "5.10.0-1029.30"
        },
        {
            "binary_name": "linux-tools-5.10.0-1029-oem",
            "binary_version": "5.10.0-1029.30"
        }
    ]
}

Database specific

{
    "cves_map": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "cves": [
            {
                "severity": [
                    {
                        "type": "CVSS_V3",
                        "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H"
                    },
                    {
                        "type": "Ubuntu",
                        "score": "medium"
                    }
                ],
                "id": "CVE-2021-3501"
            },
            {
                "severity": [
                    {
                        "type": "CVSS_V3",
                        "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"
                    },
                    {
                        "type": "Ubuntu",
                        "score": "medium"
                    }
                ],
                "id": "CVE-2021-29155"
            },
            {
                "severity": [
                    {
                        "type": "CVSS_V3",
                        "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"
                    },
                    {
                        "type": "Ubuntu",
                        "score": "medium"
                    }
                ],
                "id": "CVE-2021-31829"
            }
        ]
    }
}