USN-4884-1

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Source
https://ubuntu.com/security/notices/USN-4884-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4884-1.json
JSON Data
https://api.osv.dev/v1/vulns/USN-4884-1
Related
Published
2021-03-20T04:51:03.151937Z
Modified
2021-03-20T04:51:03.151937Z
Summary
linux-oem-5.10 vulnerabilities
Details

Loris Reiff discovered that the BPF implementation in the Linux kernel did not properly validate attributes in the getsockopt BPF hook. A local attacker could possibly use this to cause a denial of service (system crash). (CVE-2021-20194)

It was discovered that the priority inheritance futex implementation in the Linux kernel contained a race condition, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-3347)

It was discovered that the network block device (nbd) driver in the Linux kernel contained a use-after-free vulnerability during device setup. A local attacker with access to the nbd device could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-3348)

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?arch=src?distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
5.10.0-1017.18

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

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "5.10.0-1017.18",
            "binary_name": "linux-buildinfo-5.10.0-1017-oem"
        },
        {
            "binary_version": "5.10.0-1017.18",
            "binary_name": "linux-headers-5.10.0-1017-oem"
        },
        {
            "binary_version": "5.10.0-1017.18",
            "binary_name": "linux-image-unsigned-5.10.0-1017-oem"
        },
        {
            "binary_version": "5.10.0-1017.18",
            "binary_name": "linux-image-unsigned-5.10.0-1017-oem-dbgsym"
        },
        {
            "binary_version": "5.10.0-1017.18",
            "binary_name": "linux-modules-5.10.0-1017-oem"
        },
        {
            "binary_version": "5.10.0-1017.18",
            "binary_name": "linux-oem-5.10-headers-5.10.0-1017"
        },
        {
            "binary_version": "5.10.0-1017.18",
            "binary_name": "linux-oem-5.10-tools-5.10.0-1017"
        },
        {
            "binary_version": "5.10.0-1017.18",
            "binary_name": "linux-oem-5.10-tools-host"
        },
        {
            "binary_version": "5.10.0-1017.18",
            "binary_name": "linux-tools-5.10.0-1017-oem"
        }
    ]
}