Ubuntu update for linux



Published: 2022-06-17
Risk Low
Patch available YES
Number of vulnerabilities 5
CVE-ID CVE-2021-39713
CVE-2022-21123
CVE-2022-21125
CVE-2022-21166
CVE-2022-21499
CWE-ID CWE-254
CWE-200
CWE-284
Exploitation vector Local
Public exploit N/A
Vulnerable software
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Ubuntu
Operating systems & Components / Operating system

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

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

linux-image-3.13.0-190-lowlatency (Ubuntu package)
Operating systems & Components / Operating system package or component

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

linux-image-3.13.0-190-generic (Ubuntu package)
Operating systems & Components / Operating system package or component

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

Vendor Canonical Ltd.

Security Bulletin

This security bulletin contains information about 5 vulnerabilities.

1) Security features bypass

EUVDB-ID: #VU63350

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-2021-39713

CWE-ID: CWE-254 - Security Features

Exploit availability: No

Description

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

The vulnerability exists due to multiple issues in Qdisc implementation related to rcu read lock. A local application can execute arbitrary code with elevated privileges.

Mitigation

Update the affected package linux to the latest version.

Vulnerable software versions

Ubuntu: 14.04

linux-image-lowlatency (Ubuntu package): before 3.13.0.190.199

linux-image-generic (Ubuntu package): before 3.13.0.190.199

linux-image-3.13.0-190-lowlatency (Ubuntu package): before 3.13.0.190.199

linux-image-server (Ubuntu package): before 3.13.0.190.199

linux-image-3.13.0-190-generic (Ubuntu package): before 3.13.0.190.199

linux-image-virtual (Ubuntu package): before 3.13.0.190.199

External links

http://ubuntu.com/security/notices/USN-5484-1


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) Information disclosure

EUVDB-ID: #VU64364

Risk: Low

CVSSv3.1: 5.2 [CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-21123

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

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

The vulnerability exists in Intel processors due to excessive data output when DirectPath I/O (PCI-Passthrough) is utilized. An attacker (both local and remote) with administrative access to a virtual machine that has an attached DirectPath I/O (PCI-Passthrough) device can obtain information stored in physical memory about the hypervisor or other virtual machines that reside on the same host.


Mitigation

Update the affected package linux to the latest version.

Vulnerable software versions

Ubuntu: 14.04

linux-image-lowlatency (Ubuntu package): before 3.13.0.190.199

linux-image-generic (Ubuntu package): before 3.13.0.190.199

linux-image-3.13.0-190-lowlatency (Ubuntu package): before 3.13.0.190.199

linux-image-server (Ubuntu package): before 3.13.0.190.199

linux-image-3.13.0-190-generic (Ubuntu package): before 3.13.0.190.199

linux-image-virtual (Ubuntu package): before 3.13.0.190.199

External links

http://ubuntu.com/security/notices/USN-5484-1


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) Information disclosure

EUVDB-ID: #VU64365

Risk: Low

CVSSv3.1: 5.2 [CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-21125

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

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

The vulnerability exists in Intel processors due to excessive data output when DirectPath I/O (PCI-Passthrough) is utilized. An attacker (both local and remote) with administrative access to a virtual machine that has an attached DirectPath I/O (PCI-Passthrough) device can obtain information stored in physical memory about the hypervisor or other virtual machines that reside on the same host.



Mitigation

Update the affected package linux to the latest version.

Vulnerable software versions

Ubuntu: 14.04

linux-image-lowlatency (Ubuntu package): before 3.13.0.190.199

linux-image-generic (Ubuntu package): before 3.13.0.190.199

linux-image-3.13.0-190-lowlatency (Ubuntu package): before 3.13.0.190.199

linux-image-server (Ubuntu package): before 3.13.0.190.199

linux-image-3.13.0-190-generic (Ubuntu package): before 3.13.0.190.199

linux-image-virtual (Ubuntu package): before 3.13.0.190.199

External links

http://ubuntu.com/security/notices/USN-5484-1


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) Information disclosure

EUVDB-ID: #VU64366

Risk: Low

CVSSv3.1: 5.2 [CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-21166

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

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

The vulnerability exists in Intel processors due to excessive data output when DirectPath I/O (PCI-Passthrough) is utilized. An attacker (both local and remote) with administrative access to a virtual machine that has an attached DirectPath I/O (PCI-Passthrough) device can obtain information stored in physical memory about the hypervisor or other virtual machines that reside on the same host.

Mitigation

Update the affected package linux to the latest version.

Vulnerable software versions

Ubuntu: 14.04

linux-image-lowlatency (Ubuntu package): before 3.13.0.190.199

linux-image-generic (Ubuntu package): before 3.13.0.190.199

linux-image-3.13.0-190-lowlatency (Ubuntu package): before 3.13.0.190.199

linux-image-server (Ubuntu package): before 3.13.0.190.199

linux-image-3.13.0-190-generic (Ubuntu package): before 3.13.0.190.199

linux-image-virtual (Ubuntu package): before 3.13.0.190.199

External links

http://ubuntu.com/security/notices/USN-5484-1


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) Improper access control

EUVDB-ID: #VU63961

Risk: Low

CVSSv3.1: 5.2 [CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-21499

CWE-ID: CWE-284 - Improper Access Control

Exploit availability: No

Description

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

The vulnerability exists due to improper access restrictions to the kernel debugger when booted in secure boot environments. A local privileged user can bypass UEFI Secure Boot restrictions.

Mitigation

Update the affected package linux to the latest version.

Vulnerable software versions

Ubuntu: 14.04

linux-image-lowlatency (Ubuntu package): before 3.13.0.190.199

linux-image-generic (Ubuntu package): before 3.13.0.190.199

linux-image-3.13.0-190-lowlatency (Ubuntu package): before 3.13.0.190.199

linux-image-server (Ubuntu package): before 3.13.0.190.199

linux-image-3.13.0-190-generic (Ubuntu package): before 3.13.0.190.199

linux-image-virtual (Ubuntu package): before 3.13.0.190.199

External links

http://ubuntu.com/security/notices/USN-5484-1


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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