Ubuntu update for linux

Published: 2023-03-03

Risk	Medium
Patch available	YES
Number of vulnerabilities	9
CVE-ID	CVE-2022-3521 CVE-2022-3545 CVE-2022-3628 CVE-2022-3640 CVE-2022-42328 CVE-2022-42329 CVE-2022-42895 CVE-2022-4378 CVE-2023-0461
CWE-ID	CWE-362 CWE-119 CWE-416 CWE-399 CWE-824 CWE-121
Exploitation vector	Network
Public exploit	Public exploit code for vulnerability #8 is available.
Vulnerable software	Ubuntu Operating systems & Components / Operating system linux-image-virtual (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-oracle-lts-18.04 (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-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-lts-18.04 (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-dell300x (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-aws-lts-18.04 (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-4.15.0-206-lowlatency (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-4.15.0-206-generic-lpae (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-4.15.0-206-generic (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-4.15.0-1151-aws (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-4.15.0-1146-gcp (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-4.15.0-1115-oracle (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-4.15.0-1061-dell300x (Ubuntu package) Operating systems & Components / Operating system package or component
Vendor	Canonical Ltd.

Security Bulletin

This security bulletin contains information about 9 vulnerabilities.

1) Race condition

EUVDB-ID: #VU69755

Risk: Low

CVSSv4.0: 4.1 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-3521

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

Exploit availability: No

Description

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

The vulnerability exists due to a race condition within the kcm_tx_work() function in net/kcm/kcmsock.c in Linux kernel. A local user can exploit the race and gain unauthorized access to sensitive information and escalate privileges on the system.

Mitigation

Update the affected package linux to the latest version.

Vulnerable software versions

Ubuntu: 18.04

linux-image-virtual (Ubuntu package): before 4.15.0.206.189

linux-image-oracle-lts-18.04 (Ubuntu package): before 4.15.0.1115.120

linux-image-lowlatency (Ubuntu package): before 4.15.0.206.189

linux-image-generic-lpae (Ubuntu package): before 4.15.0.206.189

linux-image-generic (Ubuntu package): before 4.15.0.206.189

linux-image-gcp-lts-18.04 (Ubuntu package): before 4.15.0.1146.160

linux-image-dell300x (Ubuntu package): before 4.15.0.1061.60

linux-image-aws-lts-18.04 (Ubuntu package): before 4.15.0.1151.149

linux-image-4.15.0-206-lowlatency (Ubuntu package): before 4.15.0-206.217

linux-image-4.15.0-206-generic-lpae (Ubuntu package): before 4.15.0-206.217

linux-image-4.15.0-206-generic (Ubuntu package): before 4.15.0-206.217

linux-image-4.15.0-1151-aws (Ubuntu package): before 4.15.0-1151.164

linux-image-4.15.0-1146-gcp (Ubuntu package): before 4.15.0-1146.162

linux-image-4.15.0-1115-oracle (Ubuntu package): before 4.15.0-1115.126

linux-image-4.15.0-1061-dell300x (Ubuntu package): before 4.15.0-1061.66

CPE2.3

External links

https://ubuntu.com/security/notices/USN-5920-1

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) Buffer overflow

EUVDB-ID: #VU69758

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-2022-3545

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

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

The vulnerability exists due to a boundary error within the area_cache_get() function in drivers/net/ethernet/netronome/nfp/nfpcore/nfp_cppcore.c. A local user can trigger memory corruption and execute arbitrary code with elevated privileges.