Ubuntu update for linux-azure



Risk Medium
Patch available YES
Number of vulnerabilities 5
CVE-ID CVE-2022-3619
CVE-2022-3628
CVE-2022-3640
CVE-2022-42895
CVE-2023-0590
CWE-ID CWE-401
CWE-119
CWE-416
CWE-824
Exploitation vector Local
Public exploit N/A
Vulnerable software
 Ubuntu
Operating systems & Components / Operating system

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

linux-image-5.19.0-1020-azure (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: #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-azure to the latest version.

Vulnerable software versions

Ubuntu: 22.10

linux-image-azure (Ubuntu package): before 5.19.0.1020.16

linux-image-5.19.0-1020-azure (Ubuntu package): before 5.19.0-1020.21

CPE2.3 External links

https://ubuntu.com/security/notices/USN-5878-1


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.

2) 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-azure to the latest version.

Vulnerable software versions

Ubuntu: 22.10

linux-image-azure (Ubuntu package): before 5.19.0.1020.16

linux-image-5.19.0-1020-azure (Ubuntu package): before 5.19.0-1020.21

CPE2.3 External links

https://ubuntu.com/security/notices/USN-5878-1


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) Use-after-free

EUVDB-ID: #VU70463

Risk: Medium

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:Green]

CVE-ID: CVE-2022-3640

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows an attacker to compromise the affected system.

The vulnerability exists due to a use-after-free error in the 2cap_conn_del() function in net/bluetooth/l2cap_core.c in Linux kernel. An attacker with physical proximity to device can trigger a use-after-free error and execute arbitrary code on the system.


Mitigation

Update the affected package linux-azure to the latest version.

Vulnerable software versions

Ubuntu: 22.10

linux-image-azure (Ubuntu package): before 5.19.0.1020.16

linux-image-5.19.0-1020-azure (Ubuntu package): before 5.19.0-1020.21

CPE2.3 External links

https://ubuntu.com/security/notices/USN-5878-1


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.

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-azure to the latest version.

Vulnerable software versions

Ubuntu: 22.10

linux-image-azure (Ubuntu package): before 5.19.0.1020.16

linux-image-5.19.0-1020-azure (Ubuntu package): before 5.19.0-1020.21

CPE2.3 External links

https://ubuntu.com/security/notices/USN-5878-1


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: #VU72098

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-2023-0590

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 within the qdisc_graft() function in net/sched/sch_api.c. A local user can trigger a use-after-free error and crash the kernel.

Mitigation

Update the affected package linux-azure to the latest version.

Vulnerable software versions

Ubuntu: 22.10

linux-image-azure (Ubuntu package): before 5.19.0.1020.16

linux-image-5.19.0-1020-azure (Ubuntu package): before 5.19.0-1020.21

CPE2.3 External links

https://ubuntu.com/security/notices/USN-5878-1


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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