USN-5207-1

Nadav Amit discovered that the hugetlb implementation in the Linux kernel did not perform TLB flushes under certain conditions. A local attacker could use this to leak or alter data from other processes that use huge pages. (CVE-2021-4002)

It was discovered that the eBPF implementation in the Linux kernel contained a race condition around read-only maps. A privileged attacker could use this to modify read-only maps. (CVE-2021-4001)

Luo Likang discovered that the FireDTV Firewire driver in the Linux kernel did not properly perform bounds checking in some situations. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-42739)

It was discovered that the TIPC Protocol implementation in the Linux kernel did not properly validate MSG_CRYPTO messages in some situations. An attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-43267)

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@5.10.0-1053.55?arch=source&distro=focal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

5.10.0-1053.55

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

5.10.0-1029.30

5.10.0-1032.33

5.10.0-1033.34

5.10.0-1034.35

5.10.0-1038.40

5.10.0-1044.46

5.10.0-1045.47

5.10.0-1049.51

5.10.0-1050.52

5.10.0-1051.53

5.10.0-1052.54

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "linux-buildinfo-5.10.0-1053-oem",
            "binary_version": "5.10.0-1053.55"
        },
        {
            "binary_name": "linux-headers-5.10.0-1053-oem",
            "binary_version": "5.10.0-1053.55"
        },
        {
            "binary_name": "linux-image-unsigned-5.10.0-1053-oem",
            "binary_version": "5.10.0-1053.55"
        },
        {
            "binary_name": "linux-modules-5.10.0-1053-oem",
            "binary_version": "5.10.0-1053.55"
        },
        {
            "binary_name": "linux-oem-5.10-headers-5.10.0-1053",
            "binary_version": "5.10.0-1053.55"
        },
        {
            "binary_name": "linux-oem-5.10-tools-5.10.0-1053",
            "binary_version": "5.10.0-1053.55"
        },
        {
            "binary_name": "linux-oem-5.10-tools-host",
            "binary_version": "5.10.0-1053.55"
        },
        {
            "binary_name": "linux-tools-5.10.0-1053-oem",
            "binary_version": "5.10.0-1053.55"
        }
    ],
    "availability": "No subscription required"
}

Database specific

cves_map

{
    "cves": [
        {
            "id": "CVE-2021-4001",
            "severity": [
                {
                    "score": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:N",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ]
        },
        {
            "id": "CVE-2021-4002",
            "severity": [
                {
                    "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N",
                    "type": "CVSS_V3"
                },
                {
                    "score": "high",
                    "type": "Ubuntu"
                }
            ]
        },
        {
            "id": "CVE-2021-42739",
            "severity": [
                {
                    "score": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ]
        },
        {
            "id": "CVE-2021-43267",
            "severity": [
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ]
        }
    ],
    "ecosystem": "Ubuntu:20.04:LTS"
}