Ubuntu update for linux



Risk Low
Patch available YES
Number of vulnerabilities 5
CVE-ID CVE-2023-0459
CVE-2023-1118
CVE-2023-1513
CVE-2023-2162
CVE-2023-32269
CWE-ID CWE-1037
CWE-416
CWE-665
Exploitation vector Local
Public exploit N/A
Vulnerable software
 Ubuntu
Operating systems & Components / Operating system

linux-image-lowlatency (Ubuntu package)
Operating systems & Components / Operating system package or component

linux-image-4.15.0-1140-kvm (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-kvm (Ubuntu package)
Operating systems & Components / Operating system package or component

linux-image-4.15.0-211-generic-lpae (Ubuntu package)
Operating systems & Components / Operating system package or component

linux-image-4.15.0-211-generic (Ubuntu package)
Operating systems & Components / Operating system package or component

linux-image-4.15.0-211-lowlatency (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-4.15.0-1156-aws (Ubuntu package)
Operating systems & Components / Operating system package or component

linux-image-aws-hwe (Ubuntu package)
Operating systems & Components / Operating system package or component

Vendor Canonical Ltd.

Security Bulletin

This security bulletin contains information about 5 vulnerabilities.

1) Processor optimization removal or modification of security-critical code

EUVDB-ID: #VU76222

Risk: Low

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

CVE-ID: CVE-2023-0459

CWE-ID: CWE-1037 - Processor optimization removal or modification of security-critical code

Exploit availability: No

Description

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

The vulnerability exists due to improper implementation of speculative execution barriers in usercopy functions
in certain situations. A local user can gain access to sensitive information.

Mitigation

Update the affected package linux to the latest version.

Vulnerable software versions

Ubuntu: 16.04 - 18.04

linux-image-lowlatency (Ubuntu package): before 4.15.0.211.194

linux-image-4.15.0-1140-kvm (Ubuntu package): before 4.15.0-1140.145

linux-image-generic-lpae (Ubuntu package): before 4.15.0.211.194

linux-image-kvm (Ubuntu package): before 4.15.0.1140.131

linux-image-4.15.0-211-generic-lpae (Ubuntu package): before 4.15.0-211.222

linux-image-4.15.0-211-generic (Ubuntu package): before 4.15.0-211.222

linux-image-4.15.0-211-lowlatency (Ubuntu package): before 4.15.0-211.222

linux-image-generic (Ubuntu package): before 4.15.0.211.194

linux-image-aws-lts-18.04 (Ubuntu package): before 4.15.0.1156.154

linux-image-virtual (Ubuntu package): before 4.15.0.211.194

linux-image-4.15.0-1156-aws (Ubuntu package): before Ubuntu Pro

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

CPE2.3 External links

https://ubuntu.com/security/notices/USN-6081-1


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) Use-after-free

EUVDB-ID: #VU72734

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-2023-1118

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 in the Linux kernel integrated infrared receiver/transceiver driver "drivers/media/rc/ene_ir.c" when detaching rc device. A local user can trigger a use-after-free error and execute arbitrary code with elevated privileges.


Mitigation

Update the affected package linux to the latest version.

Vulnerable software versions

Ubuntu: 16.04 - 18.04

linux-image-lowlatency (Ubuntu package): before 4.15.0.211.194

linux-image-4.15.0-1140-kvm (Ubuntu package): before 4.15.0-1140.145

linux-image-generic-lpae (Ubuntu package): before 4.15.0.211.194

linux-image-kvm (Ubuntu package): before 4.15.0.1140.131

linux-image-4.15.0-211-generic-lpae (Ubuntu package): before 4.15.0-211.222

linux-image-4.15.0-211-generic (Ubuntu package): before 4.15.0-211.222

linux-image-4.15.0-211-lowlatency (Ubuntu package): before 4.15.0-211.222

linux-image-generic (Ubuntu package): before 4.15.0.211.194

linux-image-aws-lts-18.04 (Ubuntu package): before 4.15.0.1156.154

linux-image-virtual (Ubuntu package): before 4.15.0.211.194

linux-image-4.15.0-1156-aws (Ubuntu package): before Ubuntu Pro

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

CPE2.3 External links

https://ubuntu.com/security/notices/USN-6081-1


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.

3) Improper Initialization

EUVDB-ID: #VU74630

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-2023-1513

CWE-ID: CWE-665 - Improper Initialization

Exploit availability: No

Description

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

The vulnerability exists due to improper initialization when calling the KVM_GET_DEBUGREGS ioctl on 32-bit systems. A local user can run a specially crafted application to gain access to sensitive information.

Mitigation

Update the affected package linux to the latest version.

Vulnerable software versions

Ubuntu: 16.04 - 18.04

linux-image-lowlatency (Ubuntu package): before 4.15.0.211.194

linux-image-4.15.0-1140-kvm (Ubuntu package): before 4.15.0-1140.145

linux-image-generic-lpae (Ubuntu package): before 4.15.0.211.194

linux-image-kvm (Ubuntu package): before 4.15.0.1140.131

linux-image-4.15.0-211-generic-lpae (Ubuntu package): before 4.15.0-211.222

linux-image-4.15.0-211-generic (Ubuntu package): before 4.15.0-211.222

linux-image-4.15.0-211-lowlatency (Ubuntu package): before 4.15.0-211.222

linux-image-generic (Ubuntu package): before 4.15.0.211.194

linux-image-aws-lts-18.04 (Ubuntu package): before 4.15.0.1156.154

linux-image-virtual (Ubuntu package): before 4.15.0.211.194

linux-image-4.15.0-1156-aws (Ubuntu package): before Ubuntu Pro

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

CPE2.3 External links

https://ubuntu.com/security/notices/USN-6081-1


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.

4) Use-after-free

EUVDB-ID: #VU75994

Risk: Low

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

CVE-ID: CVE-2023-2162

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

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

The vulnerability exists due to a use-after-free error within the scsi_sw_tcp_session_create() function in drivers/scsi/iscsi_tcp.c in SCSI sub-component in the Linux Kernel. A local user can trigger a use-after-free error and gain access to sensitive information.

Mitigation

Update the affected package linux to the latest version.

Vulnerable software versions

Ubuntu: 16.04 - 18.04

linux-image-lowlatency (Ubuntu package): before 4.15.0.211.194

linux-image-4.15.0-1140-kvm (Ubuntu package): before 4.15.0-1140.145

linux-image-generic-lpae (Ubuntu package): before 4.15.0.211.194

linux-image-kvm (Ubuntu package): before 4.15.0.1140.131

linux-image-4.15.0-211-generic-lpae (Ubuntu package): before 4.15.0-211.222

linux-image-4.15.0-211-generic (Ubuntu package): before 4.15.0-211.222

linux-image-4.15.0-211-lowlatency (Ubuntu package): before 4.15.0-211.222

linux-image-generic (Ubuntu package): before 4.15.0.211.194

linux-image-aws-lts-18.04 (Ubuntu package): before 4.15.0.1156.154

linux-image-virtual (Ubuntu package): before 4.15.0.211.194

linux-image-4.15.0-1156-aws (Ubuntu package): before Ubuntu Pro

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

CPE2.3 External links

https://ubuntu.com/security/notices/USN-6081-1


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.

5) Use-after-free

EUVDB-ID: #VU76221

Risk: Low

CVSSv4.0: 5.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-32269

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 in net/netrom/af_netrom.c. A local user can trigger a use-after-free error and execute arbitrary code with elevated privileges.

Successful exploitation of the vulnerability requires that the system has netrom routing configured or the attacker must have the CAP_NET_ADMIN capability.

Mitigation

Update the affected package linux to the latest version.

Vulnerable software versions

Ubuntu: 16.04 - 18.04

linux-image-lowlatency (Ubuntu package): before 4.15.0.211.194

linux-image-4.15.0-1140-kvm (Ubuntu package): before 4.15.0-1140.145

linux-image-generic-lpae (Ubuntu package): before 4.15.0.211.194

linux-image-kvm (Ubuntu package): before 4.15.0.1140.131

linux-image-4.15.0-211-generic-lpae (Ubuntu package): before 4.15.0-211.222

linux-image-4.15.0-211-generic (Ubuntu package): before 4.15.0-211.222

linux-image-4.15.0-211-lowlatency (Ubuntu package): before 4.15.0-211.222

linux-image-generic (Ubuntu package): before 4.15.0.211.194

linux-image-aws-lts-18.04 (Ubuntu package): before 4.15.0.1156.154

linux-image-virtual (Ubuntu package): before 4.15.0.211.194

linux-image-4.15.0-1156-aws (Ubuntu package): before Ubuntu Pro

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

CPE2.3 External links

https://ubuntu.com/security/notices/USN-6081-1


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.



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