Ubuntu update for linux

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU64134

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-2022-20141

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

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

The vulnerability exists due to improper imposition of security restrictions in the Linux kernel's components. A local user can trigger the vulnerability to bypass security restrictions bypass and escalate privileges on the system.

Mitigation

Update the affected package linux to the latest version.

Vulnerable software versions

Ubuntu: 14.04 - 16.04

linux-image-virtual-lts-xenial (Ubuntu package): before 4.4.0230.264

linux-image-generic-lts-xenial (Ubuntu package): before 4.4.0230.264

linux-image-lowlatency-lts-xenial (Ubuntu package): before 4.4.0230.264

linux-image-4.4.0-1110-aws (Ubuntu package): before 4.4.0230.264

linux-image-lowlatency (Ubuntu package): before 4.4.0230.264

linux-image-kvm (Ubuntu package): before 4.4.0230.264

linux-image-4.4.0-1111-kvm (Ubuntu package): before 4.4.0230.264

linux-image-4.4.0-1146-aws (Ubuntu package): before 4.4.0230.264

linux-image-4.4.0-230-generic (Ubuntu package): before 4.4.0230.264

linux-image-aws (Ubuntu package): before 4.4.0230.264

linux-image-generic (Ubuntu package): before 4.4.0230.264

linux-image-virtual (Ubuntu package): before 4.4.0230.264

linux-image-4.4.0-230-lowlatency (Ubuntu package): before 4.4.0230.264

External links

http://ubuntu.com/security/notices/USN-5540-1

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) NULL pointer dereference

EUVDB-ID: #VU61270

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-2022-25258

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

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

The vulnerability exists due to a NULL pointer dereference error drivers/usb/gadget/composite.c in the Linux kernel. The USB Gadget subsystem lacks certain validation of interface OS descriptor requests (ones with a large array index and ones associated with NULL function pointer retrieval). A local user can run a specially crafted program to trigger memory corruption and perform a denial of service (DoS) attack.

Mitigation

Update the affected package linux to the latest version.

Vulnerable software versions

Ubuntu: 14.04 - 16.04

linux-image-virtual-lts-xenial (Ubuntu package): before 4.4.0230.264

linux-image-generic-lts-xenial (Ubuntu package): before 4.4.0230.264

linux-image-lowlatency-lts-xenial (Ubuntu package): before 4.4.0230.264

linux-image-4.4.0-1110-aws (Ubuntu package): before 4.4.0230.264

linux-image-lowlatency (Ubuntu package): before 4.4.0230.264

linux-image-kvm (Ubuntu package): before 4.4.0230.264

linux-image-4.4.0-1111-kvm (Ubuntu package): before 4.4.0230.264

linux-image-4.4.0-1146-aws (Ubuntu package): before 4.4.0230.264

linux-image-4.4.0-230-generic (Ubuntu package): before 4.4.0230.264

linux-image-aws (Ubuntu package): before 4.4.0230.264

linux-image-generic (Ubuntu package): before 4.4.0230.264

linux-image-virtual (Ubuntu package): before 4.4.0230.264

linux-image-4.4.0-230-lowlatency (Ubuntu package): before 4.4.0230.264

External links

http://ubuntu.com/security/notices/USN-5540-1

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) Exposure of Resource to Wrong Sphere

EUVDB-ID: #VU61269

Risk: Low

CVSSv3.1: 3.4 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N/E:P/RL:O/RC:C]

CVE-ID: CVE-2022-25375

CWE-ID: CWE-668 - Exposure of resource to wrong sphere

Exploit availability: Yes

Description

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

The vulnerability exists due to improper access restrictions in drivers/usb/gadget/function/rndis.c in the Linux kernel. The RNDIS USB gadget lacks validation of the size of the RNDIS_MSG_SET command. A local user can run a specially crafted program to gain access to kernel memory.

Mitigation

Update the affected package linux to the latest version.

Vulnerable software versions

Ubuntu: 14.04 - 16.04

linux-image-virtual-lts-xenial (Ubuntu package): before 4.4.0230.264

linux-image-generic-lts-xenial (Ubuntu package): before 4.4.0230.264

linux-image-lowlatency-lts-xenial (Ubuntu package): before 4.4.0230.264

linux-image-4.4.0-1110-aws (Ubuntu package): before 4.4.0230.264

linux-image-lowlatency (Ubuntu package): before 4.4.0230.264

linux-image-kvm (Ubuntu package): before 4.4.0230.264

linux-image-4.4.0-1111-kvm (Ubuntu package): before 4.4.0230.264

linux-image-4.4.0-1146-aws (Ubuntu package): before 4.4.0230.264

linux-image-4.4.0-230-generic (Ubuntu package): before 4.4.0230.264

linux-image-aws (Ubuntu package): before 4.4.0230.264

linux-image-generic (Ubuntu package): before 4.4.0230.264

linux-image-virtual (Ubuntu package): before 4.4.0230.264

linux-image-4.4.0-230-lowlatency (Ubuntu package): before 4.4.0230.264

External links

http://ubuntu.com/security/notices/USN-5540-1

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.

4) Type Confusion

EUVDB-ID: #VU65360

Risk: Low

CVSSv3.1: 7.5 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C]

CVE-ID: CVE-2022-34918

CWE-ID: CWE-843 - Type confusion

Exploit availability: Yes

Description

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

The vulnerability exists in the Linux kernel’s Netfilter subsystem in the way a user provides incorrect input of the NFT_DATA_VERDICT type. A local user can pass specially crafted data to the application, trigger a type confusion error and escalate privileges on the system.

Mitigation

Update the affected package linux to the latest version.

Vulnerable software versions

Ubuntu: 14.04 - 16.04

linux-image-virtual-lts-xenial (Ubuntu package): before 4.4.0230.264

linux-image-generic-lts-xenial (Ubuntu package): before 4.4.0230.264

linux-image-lowlatency-lts-xenial (Ubuntu package): before 4.4.0230.264

linux-image-4.4.0-1110-aws (Ubuntu package): before 4.4.0230.264

linux-image-lowlatency (Ubuntu package): before 4.4.0230.264

linux-image-kvm (Ubuntu package): before 4.4.0230.264

linux-image-4.4.0-1111-kvm (Ubuntu package): before 4.4.0230.264

linux-image-4.4.0-1146-aws (Ubuntu package): before 4.4.0230.264

linux-image-4.4.0-230-generic (Ubuntu package): before 4.4.0230.264

linux-image-aws (Ubuntu package): before 4.4.0230.264

linux-image-generic (Ubuntu package): before 4.4.0230.264

linux-image-virtual (Ubuntu package): before 4.4.0230.264

linux-image-4.4.0-230-lowlatency (Ubuntu package): before 4.4.0230.264

External links

http://ubuntu.com/security/notices/USN-5540-1

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?

Yes. This vulnerability is being exploited in the wild.