Ubuntu update for linux-oem-6.0



Risk Medium
Patch available YES
Number of vulnerabilities 5
CVE-ID CVE-2022-3524
CVE-2022-3619
CVE-2022-3628
CVE-2022-42895
CVE-2022-42896
CWE-ID CWE-401
CWE-119
CWE-824
CWE-416
Exploitation vector Local network
Public exploit N/A
Vulnerable software
Ubuntu
Operating systems & Components / Operating system

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

linux-image-6.0.0-1008-oem (Ubuntu package)
Operating systems & Components / Operating system package or component

Vendor Canonical Ltd.

Security Bulletin

This security bulletin contains information about 5 vulnerabilities.

1) Memory leak

EUVDB-ID: #VU69756

Risk: Medium

CVSSv4.0: 2.3 [CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2022-3524

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform DoS attack on the target system.

The vulnerability exists due memory leak within the ipv6_renew_options() function when retrieving a new IPv6 address from a malicious DHCP server. A remote attacker can force the system to leak memory and perform denial of service 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 6.0.0.1008.8

linux-image-6.0.0-1008-oem (Ubuntu package): before 6.0.0-1008.8

CPE2.3 External links

https://ubuntu.com/security/notices/USN-5780-1


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

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

2) Memory leak

EUVDB-ID: #VU69800

Risk: Low

CVSSv4.0: 0.4 [CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-3619

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

Exploit availability: No

Description

The vulnerability allows an attacker to perform a DoS attack.

The vulnerability exists due memory leak within the l2cap_recv_acldata() function in net/bluetooth/l2cap_core.c. An attacker with physical proximity to device can force the system to leak memory and perform denial of service 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 6.0.0.1008.8

linux-image-6.0.0-1008-oem (Ubuntu package): before 6.0.0-1008.8

CPE2.3 External links

https://ubuntu.com/security/notices/USN-5780-1


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) Buffer overflow

EUVDB-ID: #VU69803

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-2022-3628

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

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

The vulnerability exists due to a boundary error within the brcmf_fweh_event_worker() function in drivers/net/wireless/broadcom/brcm80211/brcmfmac/fweh.c. A local user can use a specially crafted device to trigger memory corruption 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 6.0.0.1008.8

linux-image-6.0.0-1008-oem (Ubuntu package): before 6.0.0-1008.8

CPE2.3 External links

https://ubuntu.com/security/notices/USN-5780-1


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) Access of Uninitialized Pointer

EUVDB-ID: #VU69796

Risk: Low

CVSSv4.0: 0.4 [CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-42895

CWE-ID: CWE-824 - Access of Uninitialized Pointer

Exploit availability: No

Description

The vulnerability allows an attacker to gain access to sensitive information.

The vulnerability exists due to unauthorized access of uninitialized pointer within the l2cap_parse_conf_req() function in net/bluetooth/l2cap_core.c. An attacker with physical proximity to the affected device can 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 6.0.0.1008.8

linux-image-6.0.0-1008-oem (Ubuntu package): before 6.0.0-1008.8

CPE2.3 External links

https://ubuntu.com/security/notices/USN-5780-1


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.

5) Use-after-free

EUVDB-ID: #VU69795

Risk: Low

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

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 6.0.0.1008.8

linux-image-6.0.0-1008-oem (Ubuntu package): before 6.0.0-1008.8

CPE2.3 External links

https://ubuntu.com/security/notices/USN-5780-1


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.



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