Ubuntu update for linux



Published: 2022-06-08 | Updated: 2022-06-12
Risk Medium
Patch available YES
Number of vulnerabilities 8
CVE-ID CVE-2021-3772
CVE-2021-4149
CVE-2022-1016
CVE-2022-1419
CVE-2022-1966
CVE-2022-21499
CVE-2022-28356
CVE-2022-28390
CWE-ID CWE-345
CWE-667
CWE-416
CWE-284
CWE-401
CWE-415
Exploitation vector Network
Public exploit Public exploit code for vulnerability #5 is available.
Vulnerable software
Subscribe 		Ubuntu
Operating systems & Components / Operating system

linux-image-virtual-hwe-16.04 (Ubuntu package)
Operating systems & Components / Operating system package or component

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

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

linux-image-raspi2 (Ubuntu package)
Operating systems & Components / Operating system package or component

linux-image-oracle-lts-18.04 (Ubuntu package)
Operating systems & Components / Operating system package or component

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

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

linux-image-lowlatency-hwe-16.04 (Ubuntu package)
Operating systems & Components / Operating system package or component

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

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

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

linux-image-generic-hwe-16.04 (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-azure-lts-18.04 (Ubuntu package)
Operating systems & Components / Operating system package or component

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

linux-image-aws-lts-18.04 (Ubuntu package)
Operating systems & Components / Operating system package or component

linux-image-4.15.0-184-lowlatency (Ubuntu package)
Operating systems & Components / Operating system package or component

linux-image-4.15.0-184-generic-lpae (Ubuntu package)
Operating systems & Components / Operating system package or component

linux-image-4.15.0-184-generic (Ubuntu package)
Operating systems & Components / Operating system package or component

linux-image-4.15.0-1142-azure (Ubuntu package)
Operating systems & Components / Operating system package or component

linux-image-4.15.0-1133-aws (Ubuntu package)
Operating systems & Components / Operating system package or component

linux-image-4.15.0-1132-snapdragon (Ubuntu package)
Operating systems & Components / Operating system package or component

linux-image-4.15.0-1119-kvm (Ubuntu package)
Operating systems & Components / Operating system package or component

linux-image-4.15.0-1114-raspi2 (Ubuntu package)
Operating systems & Components / Operating system package or component

linux-image-4.15.0-1098-oracle (Ubuntu package)
Operating systems & Components / Operating system package or component

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

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

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

Vendor Canonical Ltd.

Security Bulletin

This security bulletin contains information about 8 vulnerabilities.

1) Insufficient verification of data authenticity

EUVDB-ID: #VU63835

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-2021-3772

CWE-ID: CWE-345 - Insufficient Verification of Data Authenticity

Exploit availability: No

Description

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

The vulnerability exists due to insufficient verification of data authenticity in the Linux SCTP stack. A remote attacker can exploit this vulnerability to perform a denial of service attack.

Mitigation

Update the affected package linux to the latest version.

Vulnerable software versions

Ubuntu: 14.04 - 18.04

linux-image-virtual-hwe-16.04 (Ubuntu package): before 4.15.0.184.172

linux-image-virtual (Ubuntu package): before 4.15.0.184.172

linux-image-snapdragon (Ubuntu package): before 4.15.0.1132.133

linux-image-raspi2 (Ubuntu package): before 4.15.0.1114.111

linux-image-oracle-lts-18.04 (Ubuntu package): before 4.15.0.1098.107

linux-image-oracle (Ubuntu package): before 5.4.0.1076.83~18.04.54

linux-image-oem (Ubuntu package): before 5.4.0.117.132~18.04.99

linux-image-lowlatency-hwe-16.04 (Ubuntu package): before 4.15.0.184.172

linux-image-lowlatency (Ubuntu package): before 4.15.0.184.172

linux-image-kvm (Ubuntu package): before 4.15.0.1119.114

linux-image-generic-lpae (Ubuntu package): before 4.15.0.184.172

linux-image-generic-hwe-16.04 (Ubuntu package): before 4.15.0.184.172

linux-image-generic (Ubuntu package): before 4.15.0.184.172

linux-image-azure-lts-18.04 (Ubuntu package): before 4.15.0.1142.114

linux-image-azure (Ubuntu package): before 5.4.0.1083.61

linux-image-aws-lts-18.04 (Ubuntu package): before 4.15.0.1133.135

linux-image-4.15.0-184-lowlatency (Ubuntu package): before 4.15.0-184.194

linux-image-4.15.0-184-generic-lpae (Ubuntu package): before 4.15.0-184.194

linux-image-4.15.0-184-generic (Ubuntu package): before 4.15.0-184.194

linux-image-4.15.0-1142-azure (Ubuntu package): before 4.15.0-1142.156

linux-image-4.15.0-1133-aws (Ubuntu package): before 4.15.0-1133.143

linux-image-4.15.0-1132-snapdragon (Ubuntu package): before 4.15.0-1132.142

linux-image-4.15.0-1119-kvm (Ubuntu package): before 4.15.0-1119.123

linux-image-4.15.0-1114-raspi2 (Ubuntu package): before 4.15.0-1114.122

linux-image-4.15.0-1098-oracle (Ubuntu package): before 4.15.0-1098.108

linux-image-gcp (Ubuntu package): before 5.13.0.1027.32~20.04.1

linux-image-gke (Ubuntu package): before 5.15.0.1005.10

linux-image-aws-hwe (Ubuntu package): before 4.15.0.1099.92

External links

http://ubuntu.com/security/notices/USN-5466-1


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.

2) Improper locking

EUVDB-ID: #VU64071

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-2021-4149

CWE-ID: CWE-667 - Improper Locking

Exploit availability: No

Description

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

The vulnerability exists in btrfs_alloc_tree_b in fs/btrfs/extent-tree.c in the Linux kernel due to an improper lock operation in btrfs. A local user can exploit this vulnerability to cause a deadlock, resulting in a denial of service condition.

Mitigation

Update the affected package linux to the latest version.

Vulnerable software versions

Ubuntu: 14.04 - 18.04

linux-image-virtual-hwe-16.04 (Ubuntu package): before 4.15.0.184.172

linux-image-virtual (Ubuntu package): before 4.15.0.184.172

linux-image-snapdragon (Ubuntu package): before 4.15.0.1132.133

linux-image-raspi2 (Ubuntu package): before 4.15.0.1114.111

linux-image-oracle-lts-18.04 (Ubuntu package): before 4.15.0.1098.107

linux-image-oracle (Ubuntu package): before 5.4.0.1076.83~18.04.54

linux-image-oem (Ubuntu package): before 5.4.0.117.132~18.04.99

linux-image-lowlatency-hwe-16.04 (Ubuntu package): before 4.15.0.184.172

linux-image-lowlatency (Ubuntu package): before 4.15.0.184.172

linux-image-kvm (Ubuntu package): before 4.15.0.1119.114

linux-image-generic-lpae (Ubuntu package): before 4.15.0.184.172

linux-image-generic-hwe-16.04 (Ubuntu package): before 4.15.0.184.172

linux-image-generic (Ubuntu package): before 4.15.0.184.172

linux-image-azure-lts-18.04 (Ubuntu package): before 4.15.0.1142.114

linux-image-azure (Ubuntu package): before 5.4.0.1083.61

linux-image-aws-lts-18.04 (Ubuntu package): before 4.15.0.1133.135

linux-image-4.15.0-184-lowlatency (Ubuntu package): before 4.15.0-184.194

linux-image-4.15.0-184-generic-lpae (Ubuntu package): before 4.15.0-184.194

linux-image-4.15.0-184-generic (Ubuntu package): before 4.15.0-184.194

linux-image-4.15.0-1142-azure (Ubuntu package): before 4.15.0-1142.156

linux-image-4.15.0-1133-aws (Ubuntu package): before 4.15.0-1133.143

linux-image-4.15.0-1132-snapdragon (Ubuntu package): before 4.15.0-1132.142

linux-image-4.15.0-1119-kvm (Ubuntu package): before 4.15.0-1119.123

linux-image-4.15.0-1114-raspi2 (Ubuntu package): before 4.15.0-1114.122

linux-image-4.15.0-1098-oracle (Ubuntu package): before 4.15.0-1098.108

linux-image-gcp (Ubuntu package): before 5.13.0.1027.32~20.04.1

linux-image-gke (Ubuntu package): before 5.15.0.1005.10

linux-image-aws-hwe (Ubuntu package): before 4.15.0.1099.92

External links

http://ubuntu.com/security/notices/USN-5466-1


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: #VU62028

Risk: Low

CVSSv3.1: 2.9 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-1016

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a local user to gain access to sensitive information.

The vulnerability exists due to a use-after-free error in net/netfilter/nf_tables_core.c:nft_do_chain in Linux kernel.. A local user can trigger a use-after-free error and gain access to sensitive information.

Mitigation

Update the affected package linux to the latest version.

Vulnerable software versions

Ubuntu: 14.04 - 18.04

linux-image-virtual-hwe-16.04 (Ubuntu package): before 4.15.0.184.172

linux-image-virtual (Ubuntu package): before 4.15.0.184.172

linux-image-snapdragon (Ubuntu package): before 4.15.0.1132.133

linux-image-raspi2 (Ubuntu package): before 4.15.0.1114.111

linux-image-oracle-lts-18.04 (Ubuntu package): before 4.15.0.1098.107

linux-image-oracle (Ubuntu package): before 5.4.0.1076.83~18.04.54

linux-image-oem (Ubuntu package): before 5.4.0.117.132~18.04.99

linux-image-lowlatency-hwe-16.04 (Ubuntu package): before 4.15.0.184.172

linux-image-lowlatency (Ubuntu package): before 4.15.0.184.172

linux-image-kvm (Ubuntu package): before 4.15.0.1119.114

linux-image-generic-lpae (Ubuntu package): before 4.15.0.184.172

linux-image-generic-hwe-16.04 (Ubuntu package): before 4.15.0.184.172

linux-image-generic (Ubuntu package): before 4.15.0.184.172

linux-image-azure-lts-18.04 (Ubuntu package): before 4.15.0.1142.114

linux-image-azure (Ubuntu package): before 5.4.0.1083.61

linux-image-aws-lts-18.04 (Ubuntu package): before 4.15.0.1133.135

linux-image-4.15.0-184-lowlatency (Ubuntu package): before 4.15.0-184.194

linux-image-4.15.0-184-generic-lpae (Ubuntu package): before 4.15.0-184.194

linux-image-4.15.0-184-generic (Ubuntu package): before 4.15.0-184.194

linux-image-4.15.0-1142-azure (Ubuntu package): before 4.15.0-1142.156

linux-image-4.15.0-1133-aws (Ubuntu package): before 4.15.0-1133.143

linux-image-4.15.0-1132-snapdragon (Ubuntu package): before 4.15.0-1132.142

linux-image-4.15.0-1119-kvm (Ubuntu package): before 4.15.0-1119.123

linux-image-4.15.0-1114-raspi2 (Ubuntu package): before 4.15.0-1114.122

linux-image-4.15.0-1098-oracle (Ubuntu package): before 4.15.0-1098.108

linux-image-gcp (Ubuntu package): before 5.13.0.1027.32~20.04.1

linux-image-gke (Ubuntu package): before 5.15.0.1005.10

linux-image-aws-hwe (Ubuntu package): before 4.15.0.1099.92

External links

http://ubuntu.com/security/notices/USN-5466-1


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) Use-after-free

EUVDB-ID: #VU63418

Risk: Low

CVSSv3.1: 5.8 [CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-1419

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 in vgem_gem_dumb_create() function in Linux kernel. A local user can trigger a use-after-free error and execute arbitrary code with elevated privileges.

Mitigation

Update the affected package linux to the latest version.

Vulnerable software versions

Ubuntu: 14.04 - 18.04

linux-image-virtual-hwe-16.04 (Ubuntu package): before 4.15.0.184.172

linux-image-virtual (Ubuntu package): before 4.15.0.184.172

linux-image-snapdragon (Ubuntu package): before 4.15.0.1132.133

linux-image-raspi2 (Ubuntu package): before 4.15.0.1114.111

linux-image-oracle-lts-18.04 (Ubuntu package): before 4.15.0.1098.107

linux-image-oracle (Ubuntu package): before 5.4.0.1076.83~18.04.54

linux-image-oem (Ubuntu package): before 5.4.0.117.132~18.04.99

linux-image-lowlatency-hwe-16.04 (Ubuntu package): before 4.15.0.184.172

linux-image-lowlatency (Ubuntu package): before 4.15.0.184.172

linux-image-kvm (Ubuntu package): before 4.15.0.1119.114

linux-image-generic-lpae (Ubuntu package): before 4.15.0.184.172

linux-image-generic-hwe-16.04 (Ubuntu package): before 4.15.0.184.172

linux-image-generic (Ubuntu package): before 4.15.0.184.172

linux-image-azure-lts-18.04 (Ubuntu package): before 4.15.0.1142.114

linux-image-azure (Ubuntu package): before 5.4.0.1083.61

linux-image-aws-lts-18.04 (Ubuntu package): before 4.15.0.1133.135

linux-image-4.15.0-184-lowlatency (Ubuntu package): before 4.15.0-184.194

linux-image-4.15.0-184-generic-lpae (Ubuntu package): before 4.15.0-184.194

linux-image-4.15.0-184-generic (Ubuntu package): before 4.15.0-184.194

linux-image-4.15.0-1142-azure (Ubuntu package): before 4.15.0-1142.156

linux-image-4.15.0-1133-aws (Ubuntu package): before 4.15.0-1133.143

linux-image-4.15.0-1132-snapdragon (Ubuntu package): before 4.15.0-1132.142

linux-image-4.15.0-1119-kvm (Ubuntu package): before 4.15.0-1119.123

linux-image-4.15.0-1114-raspi2 (Ubuntu package): before 4.15.0-1114.122

linux-image-4.15.0-1098-oracle (Ubuntu package): before 4.15.0-1098.108

linux-image-gcp (Ubuntu package): before 5.13.0.1027.32~20.04.1

linux-image-gke (Ubuntu package): before 5.15.0.1005.10

linux-image-aws-hwe (Ubuntu package): before 4.15.0.1099.92

External links

http://ubuntu.com/security/notices/USN-5466-1


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) Use-after-free

EUVDB-ID: #VU64070

Risk: Low

CVSSv3.1: 7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2022-1966

CWE-ID: CWE-416 - Use After Free

Exploit availability: Yes

Description

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

The vulnerability exists due to a use-after-free error in the Linux kernel's Netfilter subsystem in net/netfilter/nf_tables_api.c. A local user can trigger use-after-free error to escalate privileges on the system.

Mitigation

Update the affected package linux to the latest version.

Vulnerable software versions

Ubuntu: 14.04 - 18.04

linux-image-virtual-hwe-16.04 (Ubuntu package): before 4.15.0.184.172

linux-image-virtual (Ubuntu package): before 4.15.0.184.172

linux-image-snapdragon (Ubuntu package): before 4.15.0.1132.133

linux-image-raspi2 (Ubuntu package): before 4.15.0.1114.111

linux-image-oracle-lts-18.04 (Ubuntu package): before 4.15.0.1098.107

linux-image-oracle (Ubuntu package): before 5.4.0.1076.83~18.04.54

linux-image-oem (Ubuntu package): before 5.4.0.117.132~18.04.99

linux-image-lowlatency-hwe-16.04 (Ubuntu package): before 4.15.0.184.172

linux-image-lowlatency (Ubuntu package): before 4.15.0.184.172

linux-image-kvm (Ubuntu package): before 4.15.0.1119.114

linux-image-generic-lpae (Ubuntu package): before 4.15.0.184.172

linux-image-generic-hwe-16.04 (Ubuntu package): before 4.15.0.184.172

linux-image-generic (Ubuntu package): before 4.15.0.184.172

linux-image-azure-lts-18.04 (Ubuntu package): before 4.15.0.1142.114

linux-image-azure (Ubuntu package): before 5.4.0.1083.61

linux-image-aws-lts-18.04 (Ubuntu package): before 4.15.0.1133.135

linux-image-4.15.0-184-lowlatency (Ubuntu package): before 4.15.0-184.194

linux-image-4.15.0-184-generic-lpae (Ubuntu package): before 4.15.0-184.194

linux-image-4.15.0-184-generic (Ubuntu package): before 4.15.0-184.194

linux-image-4.15.0-1142-azure (Ubuntu package): before 4.15.0-1142.156

linux-image-4.15.0-1133-aws (Ubuntu package): before 4.15.0-1133.143

linux-image-4.15.0-1132-snapdragon (Ubuntu package): before 4.15.0-1132.142

linux-image-4.15.0-1119-kvm (Ubuntu package): before 4.15.0-1119.123

linux-image-4.15.0-1114-raspi2 (Ubuntu package): before 4.15.0-1114.122

linux-image-4.15.0-1098-oracle (Ubuntu package): before 4.15.0-1098.108

linux-image-gcp (Ubuntu package): before 5.13.0.1027.32~20.04.1

linux-image-gke (Ubuntu package): before 5.15.0.1005.10

linux-image-aws-hwe (Ubuntu package): before 4.15.0.1099.92

External links

http://ubuntu.com/security/notices/USN-5466-1


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.

6) 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 - 18.04

linux-image-virtual-hwe-16.04 (Ubuntu package): before 4.15.0.184.172

linux-image-virtual (Ubuntu package): before 4.15.0.184.172

linux-image-snapdragon (Ubuntu package): before 4.15.0.1132.133

linux-image-raspi2 (Ubuntu package): before 4.15.0.1114.111

linux-image-oracle-lts-18.04 (Ubuntu package): before 4.15.0.1098.107

linux-image-oracle (Ubuntu package): before 5.4.0.1076.83~18.04.54

linux-image-oem (Ubuntu package): before 5.4.0.117.132~18.04.99

linux-image-lowlatency-hwe-16.04 (Ubuntu package): before 4.15.0.184.172

linux-image-lowlatency (Ubuntu package): before 4.15.0.184.172

linux-image-kvm (Ubuntu package): before 4.15.0.1119.114

linux-image-generic-lpae (Ubuntu package): before 4.15.0.184.172

linux-image-generic-hwe-16.04 (Ubuntu package): before 4.15.0.184.172

linux-image-generic (Ubuntu package): before 4.15.0.184.172

linux-image-azure-lts-18.04 (Ubuntu package): before 4.15.0.1142.114

linux-image-azure (Ubuntu package): before 5.4.0.1083.61

linux-image-aws-lts-18.04 (Ubuntu package): before 4.15.0.1133.135

linux-image-4.15.0-184-lowlatency (Ubuntu package): before 4.15.0-184.194

linux-image-4.15.0-184-generic-lpae (Ubuntu package): before 4.15.0-184.194

linux-image-4.15.0-184-generic (Ubuntu package): before 4.15.0-184.194

linux-image-4.15.0-1142-azure (Ubuntu package): before 4.15.0-1142.156

linux-image-4.15.0-1133-aws (Ubuntu package): before 4.15.0-1133.143

linux-image-4.15.0-1132-snapdragon (Ubuntu package): before 4.15.0-1132.142

linux-image-4.15.0-1119-kvm (Ubuntu package): before 4.15.0-1119.123

linux-image-4.15.0-1114-raspi2 (Ubuntu package): before 4.15.0-1114.122

linux-image-4.15.0-1098-oracle (Ubuntu package): before 4.15.0-1098.108

linux-image-gcp (Ubuntu package): before 5.13.0.1027.32~20.04.1

linux-image-gke (Ubuntu package): before 5.15.0.1005.10

linux-image-aws-hwe (Ubuntu package): before 4.15.0.1099.92

External links

http://ubuntu.com/security/notices/USN-5466-1


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) Memory leak

EUVDB-ID: #VU63390

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-2022-28356

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 in net/llc/af_llc.c component. A remote attacker can force the system to leak memory and perform denial of service attack.

Mitigation

Update the affected package linux to the latest version.

Vulnerable software versions

Ubuntu: 14.04 - 18.04

linux-image-virtual-hwe-16.04 (Ubuntu package): before 4.15.0.184.172

linux-image-virtual (Ubuntu package): before 4.15.0.184.172

linux-image-snapdragon (Ubuntu package): before 4.15.0.1132.133

linux-image-raspi2 (Ubuntu package): before 4.15.0.1114.111

linux-image-oracle-lts-18.04 (Ubuntu package): before 4.15.0.1098.107

linux-image-oracle (Ubuntu package): before 5.4.0.1076.83~18.04.54

linux-image-oem (Ubuntu package): before 5.4.0.117.132~18.04.99

linux-image-lowlatency-hwe-16.04 (Ubuntu package): before 4.15.0.184.172

linux-image-lowlatency (Ubuntu package): before 4.15.0.184.172

linux-image-kvm (Ubuntu package): before 4.15.0.1119.114

linux-image-generic-lpae (Ubuntu package): before 4.15.0.184.172

linux-image-generic-hwe-16.04 (Ubuntu package): before 4.15.0.184.172

linux-image-generic (Ubuntu package): before 4.15.0.184.172

linux-image-azure-lts-18.04 (Ubuntu package): before 4.15.0.1142.114

linux-image-azure (Ubuntu package): before 5.4.0.1083.61

linux-image-aws-lts-18.04 (Ubuntu package): before 4.15.0.1133.135

linux-image-4.15.0-184-lowlatency (Ubuntu package): before 4.15.0-184.194

linux-image-4.15.0-184-generic-lpae (Ubuntu package): before 4.15.0-184.194

linux-image-4.15.0-184-generic (Ubuntu package): before 4.15.0-184.194

linux-image-4.15.0-1142-azure (Ubuntu package): before 4.15.0-1142.156

linux-image-4.15.0-1133-aws (Ubuntu package): before 4.15.0-1133.143

linux-image-4.15.0-1132-snapdragon (Ubuntu package): before 4.15.0-1132.142

linux-image-4.15.0-1119-kvm (Ubuntu package): before 4.15.0-1119.123

linux-image-4.15.0-1114-raspi2 (Ubuntu package): before 4.15.0-1114.122

linux-image-4.15.0-1098-oracle (Ubuntu package): before 4.15.0-1098.108

linux-image-gcp (Ubuntu package): before 5.13.0.1027.32~20.04.1

linux-image-gke (Ubuntu package): before 5.15.0.1005.10

linux-image-aws-hwe (Ubuntu package): before 4.15.0.1099.92

External links

http://ubuntu.com/security/notices/USN-5466-1


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.

8) Double Free

EUVDB-ID: #VU63164

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-2022-28390

CWE-ID: CWE-415 - Double Free

Exploit availability: No

Description

The vulnerability allows a local user to execute arbitrary code with elevated privileges.

The vulnerability exists due to boundary error in ems_usb_start_xmit in drivers/net/can/usb/ems_usb.c. A local user can pass specially crafted data to the application, trigger double free error and execute arbitrary code with elevated privileges.

Mitigation

Update the affected package linux to the latest version.

Vulnerable software versions

Ubuntu: 14.04 - 18.04

linux-image-virtual-hwe-16.04 (Ubuntu package): before 4.15.0.184.172

linux-image-virtual (Ubuntu package): before 4.15.0.184.172

linux-image-snapdragon (Ubuntu package): before 4.15.0.1132.133

linux-image-raspi2 (Ubuntu package): before 4.15.0.1114.111

linux-image-oracle-lts-18.04 (Ubuntu package): before 4.15.0.1098.107

linux-image-oracle (Ubuntu package): before 5.4.0.1076.83~18.04.54

linux-image-oem (Ubuntu package): before 5.4.0.117.132~18.04.99

linux-image-lowlatency-hwe-16.04 (Ubuntu package): before 4.15.0.184.172

linux-image-lowlatency (Ubuntu package): before 4.15.0.184.172

linux-image-kvm (Ubuntu package): before 4.15.0.1119.114

linux-image-generic-lpae (Ubuntu package): before 4.15.0.184.172

linux-image-generic-hwe-16.04 (Ubuntu package): before 4.15.0.184.172

linux-image-generic (Ubuntu package): before 4.15.0.184.172

linux-image-azure-lts-18.04 (Ubuntu package): before 4.15.0.1142.114

linux-image-azure (Ubuntu package): before 5.4.0.1083.61

linux-image-aws-lts-18.04 (Ubuntu package): before 4.15.0.1133.135

linux-image-4.15.0-184-lowlatency (Ubuntu package): before 4.15.0-184.194

linux-image-4.15.0-184-generic-lpae (Ubuntu package): before 4.15.0-184.194

linux-image-4.15.0-184-generic (Ubuntu package): before 4.15.0-184.194

linux-image-4.15.0-1142-azure (Ubuntu package): before 4.15.0-1142.156

linux-image-4.15.0-1133-aws (Ubuntu package): before 4.15.0-1133.143

linux-image-4.15.0-1132-snapdragon (Ubuntu package): before 4.15.0-1132.142

linux-image-4.15.0-1119-kvm (Ubuntu package): before 4.15.0-1119.123

linux-image-4.15.0-1114-raspi2 (Ubuntu package): before 4.15.0-1114.122

linux-image-4.15.0-1098-oracle (Ubuntu package): before 4.15.0-1098.108

linux-image-gcp (Ubuntu package): before 5.13.0.1027.32~20.04.1

linux-image-gke (Ubuntu package): before 5.15.0.1005.10

linux-image-aws-hwe (Ubuntu package): before 4.15.0.1099.92

External links

http://ubuntu.com/security/notices/USN-5466-1


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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