USN-5206-1

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Source
https://ubuntu.com/security/notices/USN-5206-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5206-1.json
JSON Data
https://api.test.osv.dev/v1/vulns/USN-5206-1
Upstream
Related
Published
2022-01-05T17:31:03.177333Z
Modified
2025-10-13T04:35:42Z
Summary
linux-oem-5.14 vulnerability
Details

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.

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@5.14.0-1013.13?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
5.14.0-1013.13

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

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "linux-buildinfo-5.14.0-1013-oem",
            "binary_version": "5.14.0-1013.13"
        },
        {
            "binary_name": "linux-headers-5.14.0-1013-oem",
            "binary_version": "5.14.0-1013.13"
        },
        {
            "binary_name": "linux-image-unsigned-5.14.0-1013-oem",
            "binary_version": "5.14.0-1013.13"
        },
        {
            "binary_name": "linux-modules-5.14.0-1013-oem",
            "binary_version": "5.14.0-1013.13"
        },
        {
            "binary_name": "linux-oem-5.14-headers-5.14.0-1013",
            "binary_version": "5.14.0-1013.13"
        },
        {
            "binary_name": "linux-oem-5.14-tools-5.14.0-1013",
            "binary_version": "5.14.0-1013.13"
        },
        {
            "binary_name": "linux-oem-5.14-tools-host",
            "binary_version": "5.14.0-1013.13"
        },
        {
            "binary_name": "linux-tools-5.14.0-1013-oem",
            "binary_version": "5.14.0-1013.13"
        }
    ],
    "availability": "No subscription required"
}

Database specific

cves_map

{
    "ecosystem": "Ubuntu:20.04:LTS",
    "cves": [
        {
            "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-2021-4002"
        }
    ]
}