Ubuntu update for linux-gke-5.0

Published: 2020-10-14 | Updated: 2025-04-23

Risk	Low
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2020-16119 CVE-2020-16120
CWE-ID	CWE-416 CWE-264
Exploitation vector	Local
Public exploit	N/A
Vulnerable software	Ubuntu Operating systems & Components / Operating system linux-image-raspi2-hwe-18.04 (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-5.3.0-1035-raspi2 (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-oem-osp1 (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-gkeop-5.3 (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-gke-5.3 (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-gke-5.0 (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-5.3.0-68-lowlatency (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-5.3.0-68-generic (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-5.3.0-1038-gke (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-5.0.0-1069-oem-osp1 (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-5.0.0-1049-gke (Ubuntu package) Operating systems & Components / Operating system package or component
Vendor	Canonical Ltd.

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Use-after-free

EUVDB-ID: #VU68424

Risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2020-16119

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a use-after-free error caused by the reuse of a DCCP socket with an attached dccps_hc_tx_ccid object as a listener. A local user can trigger a use-after-free error and execute arbitrary code with elevated privileges.

Mitigation

Update the affected package linux-gke-5.0 to the latest version.

Vulnerable software versions

Ubuntu: 18.04

linux-image-raspi2-hwe-18.04 (Ubuntu package): before 5.3.0.1035.24

linux-image-5.3.0-1035-raspi2 (Ubuntu package): before 5.3.0-1035.37

linux-image-oem-osp1 (Ubuntu package): before 5.0.0.1069.67

linux-image-gkeop-5.3 (Ubuntu package): before 5.3.0.68.125

linux-image-gke-5.3 (Ubuntu package): before 5.3.0.1038.21

linux-image-gke-5.0 (Ubuntu package): before 5.0.0.1049.33

linux-image-5.3.0-68-lowlatency (Ubuntu package): before 5.3.0-68.63

linux-image-5.3.0-68-generic (Ubuntu package): before 5.3.0-68.63

linux-image-5.3.0-1038-gke (Ubuntu package): before 5.3.0-1038.40

linux-image-5.0.0-1069-oem-osp1 (Ubuntu package): before 5.0.0-1069.75

linux-image-5.0.0-1049-gke (Ubuntu package): before 5.0.0-1049.50

CPE2.3

External links

https://ubuntu.com/security/notices/USN-4577-1

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Security restrictions bypass

EUVDB-ID: #VU99771