Ubuntu update for linux-oem-5.14

Published: 2023-03-28

Risk	Medium
Patch available	YES
Number of vulnerabilities	9
CVE-ID	CVE-2022-2196 CVE-2022-3061 CVE-2022-3628 CVE-2022-36280 CVE-2022-3646 CVE-2022-3649 CVE-2022-41850 CVE-2023-0394 CVE-2023-0461
CWE-ID	CWE-665 CWE-369 CWE-119 CWE-787 CWE-476 CWE-416 CWE-362
Exploitation vector	Network
Public exploit	N/A
Vulnerable software	Ubuntu Operating systems & Components / Operating system linux-image-oem-20.04c (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-oem-20.04b (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-oem-20.04d (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-5.14.0-1059-oem (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-oem-20.04 (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-5.17.0-1029-oem (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-oem-22.04a (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-oem-22.04 (Ubuntu package) Operating systems & Components / Operating system package or component
Vendor	Canonical Ltd.

Security Bulletin

This security bulletin contains information about 9 vulnerabilities.

1) Improper Initialization

EUVDB-ID: #VU74019

Risk: Low

CVSSv4.0: 4.4 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-2196

CWE-ID: CWE-665 - Improper Initialization

Exploit availability: No

Description

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

The vulnerability exists due to improper initialization within nVMX in Linux kernel. A local user can perform speculative execution attacks and escalate privileges on the system.

Mitigation

Update the affected package linux-oem-5.14 to the latest version.

Vulnerable software versions

Ubuntu: 20.04 - 22.04

linux-image-oem-20.04c (Ubuntu package): before 5.14.0.1059.57

linux-image-oem-20.04b (Ubuntu package): before 5.14.0.1059.57

linux-image-oem-20.04d (Ubuntu package): before 5.14.0.1059.57

linux-image-5.14.0-1059-oem (Ubuntu package): before 5.14.0-1059.67

linux-image-oem-20.04 (Ubuntu package): before 5.14.0.1059.57

linux-image-5.17.0-1029-oem (Ubuntu package): before 5.17.0-1029.30

linux-image-oem-22.04a (Ubuntu package): before 5.17.0.1029.27

linux-image-oem-22.04 (Ubuntu package): before 5.17.0.1029.27

CPE2.3

External links

https://ubuntu.com/security/notices/USN-5976-1

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) Division by zero

EUVDB-ID: #VU68516

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-2022-3061

CWE-ID: CWE-369 - Divide By Zero

Exploit availability: No

Description

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

The vulnerability exists due to missing checks of the "pixclock" value in the Linux kernel i740 driver. A local user can pass arbitrary values to the driver through ioctl() interface, trigger a divide by zero error and perform a denial of service (DoS) attack.