Ubuntu update for linux-oem-6.1



Risk Medium
Patch available YES
Number of vulnerabilities 7
CVE-ID CVE-2023-31085
CVE-2023-34324
CVE-2023-39189
CVE-2023-4244
CVE-2023-42754
CVE-2023-4921
CVE-2023-5345
CWE-ID CWE-369
CWE-833
CWE-125
CWE-416
CWE-476
Exploitation vector Network
Public exploit N/A
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-6.1.0-1025-oem (Ubuntu package)
Operating systems & Components / Operating system package or component

Vendor Canonical Ltd.

Security Bulletin

This security bulletin contains information about 7 vulnerabilities.

1) Division by zero

EUVDB-ID: #VU82660

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-2023-31085

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 a divide by zero error within the drivers/mtd/ubi/cdev.c driver. A local user can 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 6.1.0.1025.26

linux-image-oem-22.04b (Ubuntu package): before 6.1.0.1025.26

linux-image-oem-22.04a (Ubuntu package): before 6.1.0.1025.26

linux-image-oem-22.04 (Ubuntu package): before 6.1.0.1025.26

linux-image-6.1.0-1025-oem (Ubuntu package): before 6.1.0-1025.25

CPE2.3 External links

https://ubuntu.com/security/notices/USN-6461-1


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) Deadlock

EUVDB-ID: #VU81900

Risk: Medium

CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-34324

CWE-ID: CWE-833 - Deadlock

Exploit availability: No

Description

The vulnerability allows a malicious guest to perform a denial of service (DoS) attack.

The vulnerability exists due to improper event handling in Linux kernel. A malicious guest can disable paravirtualized device to cause a deadlock in a backend domain (other than dom0).

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 6.1.0.1025.26

linux-image-oem-22.04b (Ubuntu package): before 6.1.0.1025.26

linux-image-oem-22.04a (Ubuntu package): before 6.1.0.1025.26

linux-image-oem-22.04 (Ubuntu package): before 6.1.0.1025.26

linux-image-6.1.0-1025-oem (Ubuntu package): before 6.1.0-1025.25

CPE2.3 External links

https://ubuntu.com/security/notices/USN-6461-1


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

3) Out-of-bounds read

EUVDB-ID: #VU82659

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-2023-39189

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

Exploit availability: No

Description

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

The vulnerability exists due to a boundary condition within the nfnl_osf_add_callback() function in Linux kernel Netfilter. A local user with CAP_NET_ADMIN capability can trigger an out-of-bounds read error 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 6.1.0.1025.26

linux-image-oem-22.04b (Ubuntu package): before 6.1.0.1025.26

linux-image-oem-22.04a (Ubuntu package): before 6.1.0.1025.26

linux-image-oem-22.04 (Ubuntu package): before 6.1.0.1025.26

linux-image-6.1.0-1025-oem (Ubuntu package): before 6.1.0-1025.25

CPE2.3 External links

https://ubuntu.com/security/notices/USN-6461-1


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: #VU82306

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-2023-4244

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 within the Linux kernel netfilter: nf_tables component. A local user can trigger a use-after-free error 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 6.1.0.1025.26

linux-image-oem-22.04b (Ubuntu package): before 6.1.0.1025.26

linux-image-oem-22.04a (Ubuntu package): before 6.1.0.1025.26

linux-image-oem-22.04 (Ubuntu package): before 6.1.0.1025.26

linux-image-6.1.0-1025-oem (Ubuntu package): before 6.1.0-1025.25

CPE2.3 External links

https://ubuntu.com/security/notices/USN-6461-1


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) NULL pointer dereference

EUVDB-ID: #VU81452

Risk: Low

CVSSv4.0: 4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-42754

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

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

The vulnerability exists due to a NULL pointer dereference error within the ipv4_send_dest_unreach() function in net/ipv4/route.c. A local user with CAP_NET_ADMIN permissions can 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 6.1.0.1025.26

linux-image-oem-22.04b (Ubuntu package): before 6.1.0.1025.26

linux-image-oem-22.04a (Ubuntu package): before 6.1.0.1025.26

linux-image-oem-22.04 (Ubuntu package): before 6.1.0.1025.26

linux-image-6.1.0-1025-oem (Ubuntu package): before 6.1.0-1025.25

CPE2.3 External links

https://ubuntu.com/security/notices/USN-6461-1


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.

6) Use-after-free

EUVDB-ID: #VU81693

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-2023-4921

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 qfq_dequeue() function within the the Linux kernel's net/sched: sch_qfq component. A local user can trigger a use-after-free error 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 6.1.0.1025.26

linux-image-oem-22.04b (Ubuntu package): before 6.1.0.1025.26

linux-image-oem-22.04a (Ubuntu package): before 6.1.0.1025.26

linux-image-oem-22.04 (Ubuntu package): before 6.1.0.1025.26

linux-image-6.1.0-1025-oem (Ubuntu package): before 6.1.0-1025.25

CPE2.3 External links

https://ubuntu.com/security/notices/USN-6461-1


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.

7) Use-after-free

EUVDB-ID: #VU81691

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-2023-5345

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 within the smb3_fs_context_parse_param() function in fs/smb/client component. A remote attacker can 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 6.1.0.1025.26

linux-image-oem-22.04b (Ubuntu package): before 6.1.0.1025.26

linux-image-oem-22.04a (Ubuntu package): before 6.1.0.1025.26

linux-image-oem-22.04 (Ubuntu package): before 6.1.0.1025.26

linux-image-6.1.0-1025-oem (Ubuntu package): before 6.1.0-1025.25

CPE2.3 External links

https://ubuntu.com/security/notices/USN-6461-1


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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