Ubuntu update for linux-azure-fde

1) Out-of-bounds write

EUVDB-ID: #VU67866

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-2022-20422

CWE-ID: CWE-787 - Out-of-bounds write

Exploit availability: No

Description

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

The vulnerability exists due to a boundary error within emulation_proc_handler() in armv8 emulation in arch/arm64/kernel/armv8_deprecated.c. A local user can trigger an out-of-bounds write and execute arbitrary code with elevated privileges.

Mitigation

Update the affected package linux-azure-fde to the latest version.

Vulnerable software versions

Ubuntu: 18.04 - 20.04

linux-image-5.4.0-1095-azure-fde (Ubuntu package): before 5.4.0-1095.101+cvm1.1

linux-image-gke-5.4 (Ubuntu package): before 5.4.0.1087.94

linux-image-gkeop (Ubuntu package): before 5.4.0.1057.57

linux-image-5.4.0-1057-gkeop (Ubuntu package): before 5.4.0-1057.61

linux-image-5.4.0-1087-gke (Ubuntu package): before 5.4.0-1087.94

linux-image-azure-fde (Ubuntu package): before 5.4.0.1095.101+cvm1.33

linux-image-gke (Ubuntu package): before 5.4.0.1087.94

linux-image-gkeop-5.4 (Ubuntu package): before 5.4.0.1057.57

linux-image-raspi-hwe-18.04 (Ubuntu package): before 5.4.0.1074.73

linux-image-5.4.0-1074-raspi (Ubuntu package): before 5.4.0-1074.85~18.04.1

External links

http://ubuntu.com/security/notices/USN-5728-2

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: #VU64920

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-2022-2153

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 Linux kernel’s KVM when attempting to set a SynIC IRQ. A local user on the host can issue specific ioctl calls, causing a denial of service.

Mitigation

Update the affected package linux-azure-fde to the latest version.

Vulnerable software versions

Ubuntu: 18.04 - 20.04

linux-image-5.4.0-1095-azure-fde (Ubuntu package): before 5.4.0-1095.101+cvm1.1

linux-image-gke-5.4 (Ubuntu package): before 5.4.0.1087.94

linux-image-gkeop (Ubuntu package): before 5.4.0.1057.57

linux-image-5.4.0-1057-gkeop (Ubuntu package): before 5.4.0-1057.61

linux-image-5.4.0-1087-gke (Ubuntu package): before 5.4.0-1087.94

linux-image-azure-fde (Ubuntu package): before 5.4.0.1095.101+cvm1.33

linux-image-gke (Ubuntu package): before 5.4.0.1087.94

linux-image-gkeop-5.4 (Ubuntu package): before 5.4.0.1057.57

linux-image-raspi-hwe-18.04 (Ubuntu package): before 5.4.0.1074.73

linux-image-5.4.0-1074-raspi (Ubuntu package): before 5.4.0-1074.85~18.04.1

External links

http://ubuntu.com/security/notices/USN-5728-2

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: #VU67812

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-2022-2978

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 Linux kernel NILFS file system. A local user can trigger a use-after-free error and execute arbitrary code with elevated privileges.

Mitigation

Update the affected package linux-azure-fde to the latest version.

Vulnerable software versions

Ubuntu: 18.04 - 20.04

linux-image-5.4.0-1095-azure-fde (Ubuntu package): before 5.4.0-1095.101+cvm1.1

linux-image-gke-5.4 (Ubuntu package): before 5.4.0.1087.94

linux-image-gkeop (Ubuntu package): before 5.4.0.1057.57

linux-image-5.4.0-1057-gkeop (Ubuntu package): before 5.4.0-1057.61

linux-image-5.4.0-1087-gke (Ubuntu package): before 5.4.0-1087.94

linux-image-azure-fde (Ubuntu package): before 5.4.0.1095.101+cvm1.33

linux-image-gke (Ubuntu package): before 5.4.0.1087.94

linux-image-gkeop-5.4 (Ubuntu package): before 5.4.0.1057.57

linux-image-raspi-hwe-18.04 (Ubuntu package): before 5.4.0.1074.73

linux-image-5.4.0-1074-raspi (Ubuntu package): before 5.4.0-1074.85~18.04.1

External links

http://ubuntu.com/security/notices/USN-5728-2

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) Processor optimization removal or modification of security-critical code

EUVDB-ID: #VU65220

Risk: Low

CVSSv3.1: 4.1 [CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-29901

CWE-ID: CWE-1037 - Processor optimization removal or modification of security-critical code

Exploit availability: No

Description

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

The vulnerability exists due to the way non-transparent sharing of branch predictor targets between contexts. A local user can exploit the vulnerability to gain access to sensitive information.

Mitigation

Update the affected package linux-azure-fde to the latest version.

Vulnerable software versions

Ubuntu: 18.04 - 20.04

linux-image-5.4.0-1095-azure-fde (Ubuntu package): before 5.4.0-1095.101+cvm1.1

linux-image-gke-5.4 (Ubuntu package): before 5.4.0.1087.94

linux-image-gkeop (Ubuntu package): before 5.4.0.1057.57

linux-image-5.4.0-1057-gkeop (Ubuntu package): before 5.4.0-1057.61

linux-image-5.4.0-1087-gke (Ubuntu package): before 5.4.0-1087.94

linux-image-azure-fde (Ubuntu package): before 5.4.0.1095.101+cvm1.33

linux-image-gke (Ubuntu package): before 5.4.0.1087.94

linux-image-gkeop-5.4 (Ubuntu package): before 5.4.0.1057.57

linux-image-raspi-hwe-18.04 (Ubuntu package): before 5.4.0.1074.73

linux-image-5.4.0-1074-raspi (Ubuntu package): before 5.4.0-1074.85~18.04.1

External links

http://ubuntu.com/security/notices/USN-5728-2

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) Race condition

EUVDB-ID: #VU67477

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-2022-3028

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

Exploit availability: No

Description

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

The vulnerability exists due to a race condition in the Linux kernel's IP framework for transforming packets (XFRM subsystem) when multiple calls to xfrm_probe_algs occurred simultaneously. A local user can exploit the race and escalate privileges on the system.

Mitigation

Update the affected package linux-azure-fde to the latest version.

Vulnerable software versions

Ubuntu: 18.04 - 20.04

linux-image-5.4.0-1095-azure-fde (Ubuntu package): before 5.4.0-1095.101+cvm1.1

linux-image-gke-5.4 (Ubuntu package): before 5.4.0.1087.94

linux-image-gkeop (Ubuntu package): before 5.4.0.1057.57

linux-image-5.4.0-1057-gkeop (Ubuntu package): before 5.4.0-1057.61

linux-image-5.4.0-1087-gke (Ubuntu package): before 5.4.0-1087.94

linux-image-azure-fde (Ubuntu package): before 5.4.0.1095.101+cvm1.33

linux-image-gke (Ubuntu package): before 5.4.0.1087.94

linux-image-gkeop-5.4 (Ubuntu package): before 5.4.0.1057.57

linux-image-raspi-hwe-18.04 (Ubuntu package): before 5.4.0.1074.73

linux-image-5.4.0-1074-raspi (Ubuntu package): before 5.4.0-1074.85~18.04.1

External links

http://ubuntu.com/security/notices/USN-5728-2

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) Use-after-free

EUVDB-ID: #VU69397

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-2022-3625

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 devlink_param_set() and devlink_param_get() function in net/core/devlink.c in IPsec component of 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-azure-fde to the latest version.

Vulnerable software versions

Ubuntu: 18.04 - 20.04

linux-image-5.4.0-1095-azure-fde (Ubuntu package): before 5.4.0-1095.101+cvm1.1

linux-image-gke-5.4 (Ubuntu package): before 5.4.0.1087.94

linux-image-gkeop (Ubuntu package): before 5.4.0.1057.57

linux-image-5.4.0-1057-gkeop (Ubuntu package): before 5.4.0-1057.61

linux-image-5.4.0-1087-gke (Ubuntu package): before 5.4.0-1087.94

linux-image-azure-fde (Ubuntu package): before 5.4.0.1095.101+cvm1.33

linux-image-gke (Ubuntu package): before 5.4.0.1087.94

linux-image-gkeop-5.4 (Ubuntu package): before 5.4.0.1057.57

linux-image-raspi-hwe-18.04 (Ubuntu package): before 5.4.0.1074.73

linux-image-5.4.0-1074-raspi (Ubuntu package): before 5.4.0-1074.85~18.04.1

External links

http://ubuntu.com/security/notices/USN-5728-2

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) Use-after-free

EUVDB-ID: #VU69398

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-2022-3635

CWE-ID: CWE-416 - Use After 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 use-after-free error within the drivers/atm/idt77252.c in IPsec component of Linux kernel. A local user can trigger a use-after-free error and crash the kernel.

Mitigation

Update the affected package linux-azure-fde to the latest version.

Vulnerable software versions

Ubuntu: 18.04 - 20.04

linux-image-5.4.0-1095-azure-fde (Ubuntu package): before 5.4.0-1095.101+cvm1.1

linux-image-gke-5.4 (Ubuntu package): before 5.4.0.1087.94

linux-image-gkeop (Ubuntu package): before 5.4.0.1057.57

linux-image-5.4.0-1057-gkeop (Ubuntu package): before 5.4.0-1057.61

linux-image-5.4.0-1087-gke (Ubuntu package): before 5.4.0-1087.94

linux-image-azure-fde (Ubuntu package): before 5.4.0.1095.101+cvm1.33

linux-image-gke (Ubuntu package): before 5.4.0.1087.94

linux-image-gkeop-5.4 (Ubuntu package): before 5.4.0.1057.57

linux-image-raspi-hwe-18.04 (Ubuntu package): before 5.4.0.1074.73

linux-image-5.4.0-1074-raspi (Ubuntu package): before 5.4.0-1074.85~18.04.1

External links

http://ubuntu.com/security/notices/USN-5728-2

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.

8) Race condition

EUVDB-ID: #VU67478

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-2022-39188

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

Exploit availability: No

Description

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

The vulnerability exists due to a race condition within include/asm-generic/tlb.h in the Linux kernel. A local user can exploit the race and escalate privileges on the system.

Note, this only occurs in situations with VM_PFNMAP VMAs.

Mitigation

Update the affected package linux-azure-fde to the latest version.

Vulnerable software versions

Ubuntu: 18.04 - 20.04

linux-image-5.4.0-1095-azure-fde (Ubuntu package): before 5.4.0-1095.101+cvm1.1

linux-image-gke-5.4 (Ubuntu package): before 5.4.0.1087.94

linux-image-gkeop (Ubuntu package): before 5.4.0.1057.57

linux-image-5.4.0-1057-gkeop (Ubuntu package): before 5.4.0-1057.61

linux-image-5.4.0-1087-gke (Ubuntu package): before 5.4.0-1087.94

linux-image-azure-fde (Ubuntu package): before 5.4.0.1095.101+cvm1.33

linux-image-gke (Ubuntu package): before 5.4.0.1087.94

linux-image-gkeop-5.4 (Ubuntu package): before 5.4.0.1057.57

linux-image-raspi-hwe-18.04 (Ubuntu package): before 5.4.0.1074.73

linux-image-5.4.0-1074-raspi (Ubuntu package): before 5.4.0-1074.85~18.04.1

External links

http://ubuntu.com/security/notices/USN-5728-2

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.

9) Improper access control

EUVDB-ID: #VU67587

Risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-40768

CWE-ID: CWE-284 - Improper Access Control

Exploit availability: No

Description

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

The vulnerability exists due to improper access restrictions in the drivers/scsi/stex.c in the Linux kernel. A local user can obtain sensitive information from kernel memory because stex_queuecommand_lck lacks a memset for the PASSTHRU_CMD case.

Mitigation

Update the affected package linux-azure-fde to the latest version.

Vulnerable software versions

Ubuntu: 18.04 - 20.04

linux-image-5.4.0-1095-azure-fde (Ubuntu package): before 5.4.0-1095.101+cvm1.1

linux-image-gke-5.4 (Ubuntu package): before 5.4.0.1087.94

linux-image-gkeop (Ubuntu package): before 5.4.0.1057.57

linux-image-5.4.0-1057-gkeop (Ubuntu package): before 5.4.0-1057.61

linux-image-5.4.0-1087-gke (Ubuntu package): before 5.4.0-1087.94

linux-image-azure-fde (Ubuntu package): before 5.4.0.1095.101+cvm1.33

linux-image-gke (Ubuntu package): before 5.4.0.1087.94

linux-image-gkeop-5.4 (Ubuntu package): before 5.4.0.1057.57

linux-image-raspi-hwe-18.04 (Ubuntu package): before 5.4.0.1074.73

linux-image-5.4.0-1074-raspi (Ubuntu package): before 5.4.0-1074.85~18.04.1

External links

http://ubuntu.com/security/notices/USN-5728-2

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.

10) Use-after-free

EUVDB-ID: #VU68422

Risk: Low

CVSSv3.1: 2.2 [CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-41222

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 caused by a stale TLB in mm/mremap.c, because an rmap lock is not held during a PUD move. A local user can gain access to sensitive information.

Mitigation

Update the affected package linux-azure-fde to the latest version.

Vulnerable software versions

Ubuntu: 18.04 - 20.04

linux-image-5.4.0-1095-azure-fde (Ubuntu package): before 5.4.0-1095.101+cvm1.1

linux-image-gke-5.4 (Ubuntu package): before 5.4.0.1087.94

linux-image-gkeop (Ubuntu package): before 5.4.0.1057.57

linux-image-5.4.0-1057-gkeop (Ubuntu package): before 5.4.0-1057.61

linux-image-5.4.0-1087-gke (Ubuntu package): before 5.4.0-1087.94

linux-image-azure-fde (Ubuntu package): before 5.4.0.1095.101+cvm1.33

linux-image-gke (Ubuntu package): before 5.4.0.1087.94

linux-image-gkeop-5.4 (Ubuntu package): before 5.4.0.1057.57

linux-image-raspi-hwe-18.04 (Ubuntu package): before 5.4.0.1074.73

linux-image-5.4.0-1074-raspi (Ubuntu package): before 5.4.0-1074.85~18.04.1

External links

http://ubuntu.com/security/notices/USN-5728-2

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.

11) Use-after-free

EUVDB-ID: #VU69297

Risk: Low

CVSSv3.1: 5 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2022-42703

CWE-ID: CWE-416 - Use After Free

Exploit availability: Yes

Description

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

The vulnerability exists due to a use-after-free error within the mm/rmap.c in the Linux kernel, related to leaf anon_vma double reuse. A local user can trigger a use-after-free error and crash the kernel.

Mitigation

Update the affected package linux-azure-fde to the latest version.

Vulnerable software versions

Ubuntu: 18.04 - 20.04

linux-image-5.4.0-1095-azure-fde (Ubuntu package): before 5.4.0-1095.101+cvm1.1

linux-image-gke-5.4 (Ubuntu package): before 5.4.0.1087.94

linux-image-gkeop (Ubuntu package): before 5.4.0.1057.57

linux-image-5.4.0-1057-gkeop (Ubuntu package): before 5.4.0-1057.61

linux-image-5.4.0-1087-gke (Ubuntu package): before 5.4.0-1087.94

linux-image-azure-fde (Ubuntu package): before 5.4.0.1095.101+cvm1.33

linux-image-gke (Ubuntu package): before 5.4.0.1087.94

linux-image-gkeop-5.4 (Ubuntu package): before 5.4.0.1057.57

linux-image-raspi-hwe-18.04 (Ubuntu package): before 5.4.0.1074.73

linux-image-5.4.0-1074-raspi (Ubuntu package): before 5.4.0-1074.85~18.04.1

External links

http://ubuntu.com/security/notices/USN-5728-2

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.

12) Use-after-free

EUVDB-ID: #VU68313

Risk: High

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

CVE-ID: CVE-2022-42719

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error in the mac80211 stack in Linux kernel when parsing a multi-BSSID element. A remote attacker on the local network can send specially crafted WLAN frames to the affected system, trigger a use-after-free error and execute arbitrary code.

Mitigation

Update the affected package linux-azure-fde to the latest version.

Vulnerable software versions

Ubuntu: 18.04 - 20.04

linux-image-5.4.0-1095-azure-fde (Ubuntu package): before 5.4.0-1095.101+cvm1.1

linux-image-gke-5.4 (Ubuntu package): before 5.4.0.1087.94

linux-image-gkeop (Ubuntu package): before 5.4.0.1057.57

linux-image-5.4.0-1057-gkeop (Ubuntu package): before 5.4.0-1057.61

linux-image-5.4.0-1087-gke (Ubuntu package): before 5.4.0-1087.94

linux-image-azure-fde (Ubuntu package): before 5.4.0.1095.101+cvm1.33

linux-image-gke (Ubuntu package): before 5.4.0.1087.94

linux-image-gkeop-5.4 (Ubuntu package): before 5.4.0.1057.57

linux-image-raspi-hwe-18.04 (Ubuntu package): before 5.4.0.1074.73

linux-image-5.4.0-1074-raspi (Ubuntu package): before 5.4.0-1074.85~18.04.1

External links

http://ubuntu.com/security/notices/USN-5728-2

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.