USN-3633-1

Jann Horn discovered that the Berkeley Packet Filter (BPF) implementation in the Linux kernel improperly performed sign extension in some situations. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code.

References

Affected packages

Ubuntu:16.04:LTS / linux-euclid

Package

Name: linux-euclid
Purl: pkg:deb/ubuntu/linux-euclid@4.4.0-9026.28?arch=source&distro=xenial

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

4.4.0-9026.28

Affected versions

4.*

4.4.0-9019.20

4.4.0-9020.21

4.4.0-9021.22

4.4.0-9022.23

4.4.0-9023.24

4.4.0-9025.27

Ecosystem specific

{
    "binaries": [
        {
            "binary_version": "4.4.0-9026.28",
            "binary_name": "linux-euclid-headers-4.4.0-9026"
        },
        {
            "binary_version": "4.4.0-9026.28",
            "binary_name": "linux-euclid-tools-4.4.0-9026"
        },
        {
            "binary_version": "4.4.0-9026.28",
            "binary_name": "linux-headers-4.4.0-9026-euclid"
        },
        {
            "binary_version": "4.4.0-9026.28",
            "binary_name": "linux-image-4.4.0-9026-euclid"
        },
        {
            "binary_version": "4.4.0-9026.28",
            "binary_name": "linux-image-extra-4.4.0-9026-euclid"
        },
        {
            "binary_version": "4.4.0-9026.28",
            "binary_name": "linux-tools-4.4.0-9026-euclid"
        }
    ],
    "availability": "No subscription required"
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-3633-1.json"

cves_map

{
    "cves": [
        {
            "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": "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-2017-16995"
        }
    ],
    "ecosystem": "Ubuntu:16.04:LTS"
}