Ubuntu update for linux

Published: 2020-09-24 | Updated: 2025-04-23

Risk	Low
Patch available	YES
Number of vulnerabilities	5
CVE-ID	CVE-2019-18808 CVE-2019-19054 CVE-2020-12888 CVE-2020-16166 CVE-2020-25212
CWE-ID	CWE-401 CWE-330 CWE-367
Exploitation vector	Network
Public exploit	N/A
Vulnerable software	Ubuntu Operating systems & Components / Operating system linux-image-virtual (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-raspi2 (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-raspi (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-oracle (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-oem (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-lowlatency (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-kvm (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-gke (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-generic-lpae (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-generic (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-gcp (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-azure (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-aws (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-5.4.0-1024-kvm (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-raspi-hwe-18.04 (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-5.4.0-1019-raspi (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-virtual-hwe-18.04 (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-snapdragon-hwe-18.04 (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-lowlatency-hwe-18.04 (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-generic-lpae-hwe-18.04 (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-generic-hwe-18.04 (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-5.4.0-48-lowlatency (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-5.4.0-48-generic-lpae (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-5.4.0-48-generic (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-5.4.0-1026-azure (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-5.4.0-1025-oracle (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-5.4.0-1025-gcp (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-5.4.0-1025-aws (Ubuntu package) Operating systems & Components / Operating system package or component
Vendor	Canonical Ltd.

Security Bulletin

This security bulletin contains information about 5 vulnerabilities.

1) Memory leak

EUVDB-ID: #VU24433

Risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2019-18808

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to memory leak within the "ccp_run_sha_cmd()" function in drivers/crypto/ccp/ccp-ops.c in the Linux kernel through 5.3.9 allows a local user to cause a denial of service (memory consumption).

Mitigation

Update the affected package linux to the latest version.

Vulnerable software versions

Ubuntu: 18.04 - 20.04

linux-image-virtual (Ubuntu package): before 5.4.0.48.51

linux-image-raspi2 (Ubuntu package): before 5.4.0.1019.54

linux-image-raspi (Ubuntu package): before 5.4.0.1019.54

linux-image-oracle (Ubuntu package): before 5.4.0.1025.9

linux-image-oem-osp1 (Ubuntu package): before 5.4.0.48.51

linux-image-oem (Ubuntu package): before 5.4.0.48.51

linux-image-lowlatency (Ubuntu package): before 5.4.0.48.51

linux-image-kvm (Ubuntu package): before 5.4.0.1024.22

linux-image-gke (Ubuntu package): before 5.4.0.1025.22

linux-image-generic-lpae (Ubuntu package): before 5.4.0.48.51

linux-image-generic (Ubuntu package): before 5.4.0.48.51

linux-image-gcp (Ubuntu package): before 5.4.0.1025.13

linux-image-azure (Ubuntu package): before 5.4.0.1026.9

linux-image-aws (Ubuntu package): before 5.4.0.1025.10

linux-image-5.4.0-1024-kvm (Ubuntu package): before 5.4.0-1024.24

linux-image-raspi-hwe-18.04 (Ubuntu package): before 5.4.0.1019.23

linux-image-5.4.0-1019-raspi (Ubuntu package): before 5.4.0-1019.21~18.04.1

linux-image-virtual-hwe-18.04 (Ubuntu package): before 5.4.0.48.52~18.04.42

linux-image-snapdragon-hwe-18.04 (Ubuntu package): before 5.4.0.48.52~18.04.42

linux-image-lowlatency-hwe-18.04 (Ubuntu package): before 5.4.0.48.52~18.04.42

linux-image-generic-lpae-hwe-18.04 (Ubuntu package): before 5.4.0.48.52~18.04.42

linux-image-generic-hwe-18.04 (Ubuntu package): before 5.4.0.48.52~18.04.42

linux-image-5.4.0-48-lowlatency (Ubuntu package): before 5.4.0-48.52~18.04.1

linux-image-5.4.0-48-generic-lpae (Ubuntu package): before 5.4.0-48.52~18.04.1

linux-image-5.4.0-48-generic (Ubuntu package): before 5.4.0-48.52~18.04.1

linux-image-5.4.0-1026-azure (Ubuntu package): before 5.4.0-1026.26~18.04.1

linux-image-5.4.0-1025-oracle (Ubuntu package): before 5.4.0-1025.25~18.04.1

linux-image-5.4.0-1025-gcp (Ubuntu package): before 5.4.0-1025.25~18.04.1

linux-image-5.4.0-1025-aws (Ubuntu package): before 5.4.0-1025.25~18.04.1

CPE2.3

External links

https://ubuntu.com/security/notices/USN-4525-1

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) Memory leak

EUVDB-ID: #VU23021

Risk: Low

CVSSv4.0: 4.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2019-19054

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

Exploit availability: No

Description

The vulnerability allows a local attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to memory leak within the "cx23888_ir_probe()" function in "drivers/media/pci/cx23885/cx23888-ir.c" file. A local attacker can cause a denial of service condition (memory consumption) by triggering "kfifo_alloc()" failures.