Ubuntu update for linux-oem-6.0



Published: 2023-03-03
Risk Medium
Patch available YES
Number of vulnerabilities 9
CVE-ID CVE-2022-3567
CVE-2022-42896
CVE-2022-4379
CVE-2022-43945
CVE-2022-45934
CVE-2022-47520
CVE-2023-0045
CVE-2023-0461
CVE-2023-0469
CWE-ID CWE-362
CWE-416
CWE-119
CWE-190
CWE-125
CWE-254
Exploitation vector Network
Public exploit Public exploit code for vulnerability #7 is available.
Vulnerable software
Subscribe 		Ubuntu
Operating systems & Components / Operating system

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

linux-image-6.0.0-1012-oem (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: #VU69811

Risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-3567

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 inet6_stream_ops() and inet6_dgram_ops() functions. A local user can exploit the race and escalate privileges on the system.

Mitigation

Update the affected package linux-oem-6.0 to the latest version.

Vulnerable software versions

Ubuntu: 22.04

linux-image-oem-22.04b (Ubuntu package): before 6.0.0.1012.12

linux-image-6.0.0-1012-oem (Ubuntu package): before 6.0.0-1012.12

External links

http://ubuntu.com/security/notices/USN-5914-1


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: #VU69795

Risk: Low

CVSSv3.1: 5.9 [CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-42896

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows an attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error within the l2cap_connect() and l2cap_le_connect_req() function in net/bluetooth/l2cap_core.c. An attacker with physical proximity to the affected device can trigger a use-after-free error and execute arbitrary code on the system.


Mitigation

Update the affected package linux-oem-6.0 to the latest version.

Vulnerable software versions

Ubuntu: 22.04

linux-image-oem-22.04b (Ubuntu package): before 6.0.0.1012.12

linux-image-6.0.0-1012-oem (Ubuntu package): before 6.0.0-1012.12

External links

http://ubuntu.com/security/notices/USN-5914-1


Q & A

Can this vulnerability be exploited remotely?

No. The attacker should have physical access to the system in order to successfully exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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

3) Use-after-free

EUVDB-ID: #VU71583

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-4379

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a use-after-free error within the __nfs42_ssc_open() function in fs/nfs/nfs4file.c. A remote attacker can perform a denial of service (DoS) attack.


Mitigation

Update the affected package linux-oem-6.0 to the latest version.

Vulnerable software versions

Ubuntu: 22.04

linux-image-oem-22.04b (Ubuntu package): before 6.0.0.1012.12

linux-image-6.0.0-1012-oem (Ubuntu package): before 6.0.0-1012.12

External links

http://ubuntu.com/security/notices/USN-5914-1


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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

4) Buffer overflow

EUVDB-ID: #VU69766

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-43945

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service attacl.

The vulnerability exists due to a boundary error within the Linux kernel NFSD implementation. A remote attacker can send the RPC message over TCP with garbage data added at the end of the message, trigger memory corruption and perform a denial of service (DoS) attack.

Mitigation

Update the affected package linux-oem-6.0 to the latest version.

Vulnerable software versions

Ubuntu: 22.04

linux-image-oem-22.04b (Ubuntu package): before 6.0.0.1012.12

linux-image-6.0.0-1012-oem (Ubuntu package): before 6.0.0-1012.12

External links

http://ubuntu.com/security/notices/USN-5914-1


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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

5) Integer overflow

EUVDB-ID: #VU70464

Risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-45934

CWE-ID: CWE-190 - Integer overflow

Exploit availability: No

Description

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

The vulnerability exists due to integer overflow within the l2cap_config_req() function in net/bluetooth/l2cap_core.c in Linux kernel. A local user can pass specially crafted L2CAP_CONF_REQ packets to the device, trigger an integer overflow and execute arbitrary code with elevated privileges.

Mitigation

Update the affected package linux-oem-6.0 to the latest version.

Vulnerable software versions

Ubuntu: 22.04

linux-image-oem-22.04b (Ubuntu package): before 6.0.0.1012.12

linux-image-6.0.0-1012-oem (Ubuntu package): before 6.0.0-1012.12

External links

http://ubuntu.com/security/notices/USN-5914-1


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) Out-of-bounds read

EUVDB-ID: #VU70627

Risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-47520

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

Exploit availability: No

Description

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

The vulnerability exists due to a boundary condition within the drivers/net/wireless/microchip/wilc1000/hif.c in the WILC1000 wireless driver.  A local user can trigger an out-of-bounds read when parsing a Robust Security Network (RSN) information element from a Netlink packet and perform a denial of service (DoS) attack.

Mitigation

Update the affected package linux-oem-6.0 to the latest version.

Vulnerable software versions

Ubuntu: 22.04

linux-image-oem-22.04b (Ubuntu package): before 6.0.0.1012.12

linux-image-6.0.0-1012-oem (Ubuntu package): before 6.0.0-1012.12

External links

http://ubuntu.com/security/notices/USN-5914-1


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) Security features bypass

EUVDB-ID: #VU72469

Risk: Low

CVSSv3.1: 2.6 [CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N/E:P/RL:O/RC:C]

CVE-ID: CVE-2023-0045

CWE-ID: CWE-254 - Security Features

Exploit availability: Yes

Description

The vulnerability allows a local user to bypass implemented security restrictions.

The vulnerability exists due to Linux kernel does not correctly mitigate SMT attacks. A local user can bypass Spectre-BTI user space mitigations and gain access to sensitive information.

Mitigation

Update the affected package linux-oem-6.0 to the latest version.

Vulnerable software versions

Ubuntu: 22.04

linux-image-oem-22.04b (Ubuntu package): before 6.0.0.1012.12

linux-image-6.0.0-1012-oem (Ubuntu package): before 6.0.0-1012.12

External links

http://ubuntu.com/security/notices/USN-5914-1


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.

8) Use-after-free

EUVDB-ID: #VU72506

Risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-0461

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 Upper Level Protocol (ULP) subsystem in Linux kernel caused by improper handling of sockets entering the LISTEN state in certain protocols. A local user can trigger a use-after-free error and execute arbitrary code with elevated privileges.


Mitigation

Update the affected package linux-oem-6.0 to the latest version.

Vulnerable software versions

Ubuntu: 22.04

linux-image-oem-22.04b (Ubuntu package): before 6.0.0.1012.12

linux-image-6.0.0-1012-oem (Ubuntu package): before 6.0.0-1012.12

External links

http://ubuntu.com/security/notices/USN-5914-1


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.

9) Use-after-free

EUVDB-ID: #VU72744

Risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-0469

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

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

The vulnerability exists due to a use-after-free error during the cleanup call within the io_install_fixed_file() function in io_uring/filetable.c. A local user can trigger a use-after-free error and perform a denial of service (DoS) attack.

Mitigation

Update the affected package linux-oem-6.0 to the latest version.

Vulnerable software versions

Ubuntu: 22.04

linux-image-oem-22.04b (Ubuntu package): before 6.0.0.1012.12

linux-image-6.0.0-1012-oem (Ubuntu package): before 6.0.0-1012.12

External links

http://ubuntu.com/security/notices/USN-5914-1


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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