Ubuntu update for linux

Published: 2023-06-01 | Updated: 2024-06-16

Risk	Low
Patch available	YES
Number of vulnerabilities	4
CVE-ID	CVE-2023-1380 CVE-2023-30456 CVE-2023-31436 CVE-2023-32233
CWE-ID	CWE-125 CWE-20 CWE-787 CWE-416
Exploitation vector	Local
Public exploit	Public exploit code for vulnerability #4 is available.
Vulnerable software	Ubuntu Operating systems & Components / Operating system 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-4.15.0-1120-oracle (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-4.15.0-212-generic-lpae (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-4.15.0-1141-kvm (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-azure-lts-18.04 (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-snapdragon (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-4.15.0-212-generic (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-4.15.0-212-lowlatency (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-4.15.0-1157-aws (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-4.15.0-1166-azure (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-4.15.0-1151-snapdragon (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-aws-lts-18.04 (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-virtual (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-4.15.0-1151-gcp (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-gke (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-hwe (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-generic-hwe-16.04 (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-lowlatency-hwe-16.04 (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-virtual-hwe-16.04 (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-oracle (Ubuntu package) Operating systems & Components / Operating system package or component
Vendor	Canonical Ltd.

Security Bulletin

This security bulletin contains information about 4 vulnerabilities.

1) Out-of-bounds read

EUVDB-ID: #VU73280

Risk: Low

CVSSv4.0: 1.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-1380

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a local user to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition within the Broadcom Full MAC Wi-Fi driver (brcmfmac.ko). A local user can trigger an out-of-bounds read error and read contents of kernel memory on the system.

Mitigation

Update the affected package linux to the latest version.

Vulnerable software versions

Ubuntu: 14.04 - 18.04

linux-image-lowlatency (Ubuntu package): before 4.15.0.212.195

linux-image-generic-lpae (Ubuntu package): before 4.15.0.212.195

linux-image-4.15.0-1120-oracle (Ubuntu package): before Ubuntu Pro

linux-image-4.15.0-212-generic-lpae (Ubuntu package): before 4.15.0-212.223

linux-image-4.15.0-1141-kvm (Ubuntu package): before 4.15.0-1141.146

linux-image-gcp-lts-18.04 (Ubuntu package): before 4.15.0.1151.165

linux-image-azure-lts-18.04 (Ubuntu package): before 4.15.0.1166.134

linux-image-snapdragon (Ubuntu package): before 4.15.0.1151.150

linux-image-kvm (Ubuntu package): before 4.15.0.1141.132

linux-image-4.15.0-212-generic (Ubuntu package): before Ubuntu Pro

linux-image-4.15.0-212-lowlatency (Ubuntu package): before Ubuntu Pro

linux-image-oracle-lts-18.04 (Ubuntu package): before 4.15.0.1120.125

linux-image-4.15.0-1157-aws (Ubuntu package): before Ubuntu Pro

linux-image-4.15.0-1166-azure (Ubuntu package): before Ubuntu Pro

linux-image-4.15.0-1151-snapdragon (Ubuntu package): before 4.15.0-1151.161

linux-image-generic (Ubuntu package): before 4.15.0.212.195

linux-image-aws-lts-18.04 (Ubuntu package): before 4.15.0.1157.155

linux-image-virtual (Ubuntu package): before 4.15.0.212.195

linux-image-4.15.0-1151-gcp (Ubuntu package): before Ubuntu Pro

linux-image-gcp (Ubuntu package): before Ubuntu Pro (Infra-only)

linux-image-gke (Ubuntu package): before Ubuntu Pro (Infra-only)

linux-image-azure (Ubuntu package): before Ubuntu Pro (Infra-only)

linux-image-aws-hwe (Ubuntu package): before Ubuntu Pro (Infra-only)

linux-image-generic-hwe-16.04 (Ubuntu package): before Ubuntu Pro (Infra-only)

linux-image-lowlatency-hwe-16.04 (Ubuntu package): before Ubuntu Pro (Infra-only)

linux-image-oem (Ubuntu package): before Ubuntu Pro (Infra-only)

linux-image-virtual-hwe-16.04 (Ubuntu package): before Ubuntu Pro (Infra-only)

linux-image-oracle (Ubuntu package): before Ubuntu Pro (Infra-only)

CPE2.3

External links

https://ubuntu.com/security/notices/USN-6130-1

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) Input validation error

EUVDB-ID: #VU75456

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-2023-30456

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

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

The vulnerability exists due to insufficient validation of consistency for for CR0 and CR4 in arch/x86/kvm/vmx/nested.c in the Linux kernel. A local user can execute arbitrary code with elevated privileges.