Ubuntu update for linux-oem-5.14



Risk Low
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2022-1679
CVE-2022-34494
CWE-ID CWE-416
CWE-415
Exploitation vector Local
Public exploit N/A
Vulnerable software
 Ubuntu
Operating systems & Components / Operating system

linux-image-oem-20.04c (Ubuntu package)
Operating systems & Components / Operating system package or component

linux-image-oem-20.04b (Ubuntu package)
Operating systems & Components / Operating system package or component

linux-image-oem-20.04d (Ubuntu package)
Operating systems & Components / Operating system package or component

linux-image-5.14.0-1045-oem (Ubuntu package)
Operating systems & Components / Operating system package or component

linux-image-oem-20.04 (Ubuntu package)
Operating systems & Components / Operating system package or component

Vendor Canonical Ltd.

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Use-after-free

EUVDB-ID: #VU64861

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-2022-1679

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 ath9k_htc_wait_for_target() function in the Linux kernel’s Atheros wireless adapter driver. A local user can execute arbitrary code with elevated privileges.

Mitigation

Update the affected package linux-oem-5.14 to the latest version.

Vulnerable software versions

Ubuntu: 20.04

linux-image-oem-20.04c (Ubuntu package): before 5.14.0.1045.41

linux-image-oem-20.04b (Ubuntu package): before 5.14.0.1045.41

linux-image-oem-20.04d (Ubuntu package): before 5.14.0.1045.41

linux-image-5.14.0-1045-oem (Ubuntu package): before 5.14.0-1045.51

linux-image-oem-20.04 (Ubuntu package): before 5.14.0.1045.41

CPE2.3 External links

https://ubuntu.com/security/notices/USN-5517-1


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) Double Free

EUVDB-ID: #VU65297

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-2022-34494

CWE-ID: CWE-415 - Double 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 boundary error within the rpmsg_virtio_add_ctrl_dev() function in drivers/rpmsg/virtio_rpmsg_bus.c in the Linux kernel remote processor messaging (rpmsg) framework. A local user can run a specially crafted program to trigger a double free error and perform a denial of service (DoS) attack.

Mitigation

Update the affected package linux-oem-5.14 to the latest version.

Vulnerable software versions

Ubuntu: 20.04

linux-image-oem-20.04c (Ubuntu package): before 5.14.0.1045.41

linux-image-oem-20.04b (Ubuntu package): before 5.14.0.1045.41

linux-image-oem-20.04d (Ubuntu package): before 5.14.0.1045.41

linux-image-5.14.0-1045-oem (Ubuntu package): before 5.14.0-1045.51

linux-image-oem-20.04 (Ubuntu package): before 5.14.0.1045.41

CPE2.3 External links

https://ubuntu.com/security/notices/USN-5517-1


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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