Ubuntu update for linux-oem-5.14

1) Input validation error

EUVDB-ID: #VU61215

Risk: Low

CVSSv3.1: 4 [CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-43976

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows an attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input within the mwifiex_usb_recv() function in drivers/net/wireless/marvell/mwifiex/usb.c in Linux kernel. An attacker with physical access to the system can insert a specially crafted USB device 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-5.14.0-1024-oem (Ubuntu package): before 5.14.0-1024.26

linux-image-oem-20.04 (Ubuntu package): before 5.14.0.1024.22

linux-image-oem-20.04d (Ubuntu package): before 5.14.0.1024.22

linux-image-oem-20.04b (Ubuntu package): before 5.14.0.1024.22

linux-image-oem-20.04c (Ubuntu package): before 5.14.0.1024.22

External links

http://ubuntu.com/security/notices/USN-5302-1

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) NULL pointer dereference

EUVDB-ID: #VU62483

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-2021-44879

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 in the gc_data_segment() function in fs/f2fs/gc.c. A local user can mount a specially crafted f2fs image, trigger a NULL pointer dereference 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-5.14.0-1024-oem (Ubuntu package): before 5.14.0-1024.26

linux-image-oem-20.04 (Ubuntu package): before 5.14.0.1024.22

linux-image-oem-20.04d (Ubuntu package): before 5.14.0.1024.22

linux-image-oem-20.04b (Ubuntu package): before 5.14.0.1024.22

linux-image-oem-20.04c (Ubuntu package): before 5.14.0.1024.22

External links

http://ubuntu.com/security/notices/USN-5302-1

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) Stack-based buffer overflow

EUVDB-ID: #VU61216

Risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-0435

CWE-ID: CWE-121 - Stack-based buffer overflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error in the Linux kernel networking module for the Transparent Inter-Process Communication (TIPC) protocol. A remote unauthenticated attacker can send specially crafted traffic to the system, trigger a stack-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system but requires that the TIPC bearer is set up.

Mitigation

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

Vulnerable software versions

Ubuntu: 20.04

linux-image-5.14.0-1024-oem (Ubuntu package): before 5.14.0-1024.26

linux-image-oem-20.04 (Ubuntu package): before 5.14.0.1024.22

linux-image-oem-20.04d (Ubuntu package): before 5.14.0.1024.22

linux-image-oem-20.04b (Ubuntu package): before 5.14.0.1024.22

linux-image-oem-20.04c (Ubuntu package): before 5.14.0.1024.22

External links

http://ubuntu.com/security/notices/USN-5302-1

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.

4) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU61245

Risk: Low

CVSSv3.1: 7.2 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C]

CVE-ID: CVE-2022-0492

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

Exploit availability: Yes

Description

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

The vulnerability exists due to a logic error within the cgroup_release_agent_write() function in  kernel/cgroup/cgroup-v1.c. A local user can use the cgroups v1 release_agent feature to escalate privileges and bypass the namespace isolation.

Mitigation

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

Vulnerable software versions

Ubuntu: 20.04

linux-image-5.14.0-1024-oem (Ubuntu package): before 5.14.0-1024.26

linux-image-oem-20.04 (Ubuntu package): before 5.14.0.1024.22

linux-image-oem-20.04d (Ubuntu package): before 5.14.0.1024.22

linux-image-oem-20.04b (Ubuntu package): before 5.14.0.1024.22

linux-image-oem-20.04c (Ubuntu package): before 5.14.0.1024.22

External links

http://ubuntu.com/security/notices/USN-5302-1

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, a fully functional exploit for this vulnerability is available.

5) Missing initialization of resource

EUVDB-ID: #VU61211

Risk: Low

CVSSv3.1: 3.3 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-24448

CWE-ID: CWE-909 - Missing initialization of resource

Exploit availability: No

Description

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

The vulnerability exists due to missing initialization of resource within the fs/nfs/dir.c in the Linux kernel. If an application sets the O_DIRECTORY flag, and tries to open a regular file, nfs_atomic_open() performs a regular lookup. If a regular file is found, ENOTDIR should occur, but the server instead returns uninitialized data in the file descriptor.

Mitigation

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

Vulnerable software versions

Ubuntu: 20.04

linux-image-5.14.0-1024-oem (Ubuntu package): before 5.14.0-1024.26

linux-image-oem-20.04 (Ubuntu package): before 5.14.0.1024.22

linux-image-oem-20.04d (Ubuntu package): before 5.14.0.1024.22

linux-image-oem-20.04b (Ubuntu package): before 5.14.0.1024.22

linux-image-oem-20.04c (Ubuntu package): before 5.14.0.1024.22

External links

http://ubuntu.com/security/notices/USN-5302-1

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.

6) Memory leak

EUVDB-ID: #VU62482

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-2022-24959

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

Exploit availability: No

Description

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

The vulnerability exists due to memory leak within the yam_siocdevprivate() function in drivers/net/hamradio/yam.c. A local user can perform a denial of service attack.

Mitigation

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

Vulnerable software versions

Ubuntu: 20.04

linux-image-5.14.0-1024-oem (Ubuntu package): before 5.14.0-1024.26

linux-image-oem-20.04 (Ubuntu package): before 5.14.0.1024.22

linux-image-oem-20.04d (Ubuntu package): before 5.14.0.1024.22

linux-image-oem-20.04b (Ubuntu package): before 5.14.0.1024.22

linux-image-oem-20.04c (Ubuntu package): before 5.14.0.1024.22

External links

http://ubuntu.com/security/notices/USN-5302-1

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.