USN-3220-3

USN-3220-1 fixed a vulnerability in the Linux kernel. This update provides the corresponding updates for the Linux kernel for Amazon Web Services (AWS).

Alexander Popov discovered that the N_HDLC line discipline implementation in the Linux kernel contained a double-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly gain administrative privileges.

References

Affected packages

Ubuntu:16.04:LTS / linux-aws

Package

Name: linux-aws
Purl: pkg:deb/ubuntu/linux-aws@4.4.0-1007.16?arch=source&distro=xenial

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

4.4.0-1007.16

Affected versions

4.*

4.4.0-1001.10

4.4.0-1003.12

4.4.0-1004.13

Ecosystem specific

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "4.4.0-1007.16",
            "binary_name": "linux-aws-cloud-tools-4.4.0-1007"
        },
        {
            "binary_version": "4.4.0-1007.16",
            "binary_name": "linux-aws-cloud-tools-common"
        },
        {
            "binary_version": "4.4.0-1007.16",
            "binary_name": "linux-aws-headers-4.4.0-1007"
        },
        {
            "binary_version": "4.4.0-1007.16",
            "binary_name": "linux-aws-source-4.4.0"
        },
        {
            "binary_version": "4.4.0-1007.16",
            "binary_name": "linux-aws-tools-4.4.0-1007"
        },
        {
            "binary_version": "4.4.0-1007.16",
            "binary_name": "linux-aws-tools-common"
        },
        {
            "binary_version": "4.4.0-1007.16",
            "binary_name": "linux-cloud-tools-4.4.0-1007-aws"
        },
        {
            "binary_version": "4.4.0-1007.16",
            "binary_name": "linux-headers-4.4.0-1007-aws"
        },
        {
            "binary_version": "4.4.0-1007.16",
            "binary_name": "linux-image-4.4.0-1007-aws"
        },
        {
            "binary_version": "4.4.0-1007.16",
            "binary_name": "linux-tools-4.4.0-1007-aws"
        }
    ]
}

Database specific

cves_map

{
    "ecosystem": "Ubuntu:16.04:LTS",
    "cves": [
        {
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H"
                },
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "high"
                }
            ],
            "id": "CVE-2017-2636"
        }
    ]
}