Ubuntu update for linux-oem-6.1



| Updated: 2024-02-27
Risk Low
Patch available YES
Number of vulnerabilities 3
CVE-ID CVE-2023-5090
CVE-2023-5178
CVE-2023-5717
CWE-ID CWE-755
CWE-416
CWE-787
Exploitation vector Local
Public exploit Public exploit code for vulnerability #2 is available.
Vulnerable software
 Ubuntu
Operating systems & Components / Operating system

linux-image-oem-22.04c (Ubuntu package)
Operating systems & Components / Operating system package or component

linux-image-oem-22.04b (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

linux-image-6.1.0-1026-oem (Ubuntu package)
Operating systems & Components / Operating system package or component

Vendor Canonical Ltd.

Security Bulletin

This security bulletin contains information about 3 vulnerabilities.

1) Improper handling of exceptional conditions

EUVDB-ID: #VU83383

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-2023-5090

CWE-ID: CWE-755 - Improper Handling of Exceptional Conditions

Exploit availability: No

Description

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

The vulnerability exists due to improper handling of errors within the svm_set_x2apic_msr_interception() function in KVM. A local user can send specially crafted input and perform a denial of service (DoS) attack.

Mitigation

Update the affected package linux-oem-6.1 to the latest version.

Vulnerable software versions

Ubuntu: 22.04

linux-image-oem-22.04c (Ubuntu package): before 6.1.0.1026.27

linux-image-oem-22.04b (Ubuntu package): before 6.1.0.1026.27

linux-image-oem-22.04a (Ubuntu package): before 6.1.0.1026.27

linux-image-oem-22.04 (Ubuntu package): before 6.1.0.1026.27

linux-image-6.1.0-1026-oem (Ubuntu package): before 6.1.0-1026.26

CPE2.3 External links

https://ubuntu.com/security/notices/USN-6497-1


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: #VU82658

Risk: Low

CVSSv4.0: 7.1 [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:P/U:Clear]

CVE-ID: CVE-2023-5178

CWE-ID: CWE-416 - Use After Free

Exploit availability: Yes

Description

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

The vulnerability exists due to a use-after-free error within the drivers/nvme/target/tcp.c in nvmet_tcp_free_crypto due to a logical bug in the NVMe-oF/TCP subsystem in the Linux kernel. A local authenticated user can trigger a use-after-free error and escalate privileges on the system.

Mitigation

Update the affected package linux-oem-6.1 to the latest version.

Vulnerable software versions

Ubuntu: 22.04

linux-image-oem-22.04c (Ubuntu package): before 6.1.0.1026.27

linux-image-oem-22.04b (Ubuntu package): before 6.1.0.1026.27

linux-image-oem-22.04a (Ubuntu package): before 6.1.0.1026.27

linux-image-oem-22.04 (Ubuntu package): before 6.1.0.1026.27

linux-image-6.1.0-1026-oem (Ubuntu package): before 6.1.0-1026.26

CPE2.3 External links

https://ubuntu.com/security/notices/USN-6497-1


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. However, proof of concept for this vulnerability is available.

3) Out-of-bounds write

EUVDB-ID: #VU83311

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-2023-5717

CWE-ID: CWE-787 - Out-of-bounds write

Exploit availability: No

Description

The vulnerability local user to escalate privileges on the system.

The vulnerability exists due to a boundary error in the Linux kernel's Linux Kernel Performance Events (perf) component. A local user can trigger an out-of-bounds write and execute arbitrary code with elevated privileges.

Mitigation

Update the affected package linux-oem-6.1 to the latest version.

Vulnerable software versions

Ubuntu: 22.04

linux-image-oem-22.04c (Ubuntu package): before 6.1.0.1026.27

linux-image-oem-22.04b (Ubuntu package): before 6.1.0.1026.27

linux-image-oem-22.04a (Ubuntu package): before 6.1.0.1026.27

linux-image-oem-22.04 (Ubuntu package): before 6.1.0.1026.27

linux-image-6.1.0-1026-oem (Ubuntu package): before 6.1.0-1026.26

CPE2.3 External links

https://ubuntu.com/security/notices/USN-6497-1


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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