SUSE update for the Linux Kernel (Live Patch 30 for SLE 15 SP2)

Published: 2022-10-18

Risk	High
Patch available	YES
Number of vulnerabilities	7
CVE-ID	CVE-2021-39698 CVE-2022-39189 CVE-2022-41222 CVE-2022-41674 CVE-2022-42719 CVE-2022-42720 CVE-2022-42721
CWE-ID	CWE-416 CWE-264 CWE-119
Exploitation vector	Local network
Public exploit	N/A
Vulnerable software	SUSE Linux Enterprise Server for SAP Applications Operating systems & Components / Operating system SUSE Linux Enterprise Server Operating systems & Components / Operating system SUSE Linux Enterprise Module for Live Patching Operating systems & Components / Operating system SUSE Linux Enterprise High Performance Computing Operating systems & Components / Operating system kernel-livepatch-SLE15-SP2_Update_30-debugsource Operating systems & Components / Operating system package or component kernel-livepatch-5_3_18-150200_24_129-default-debuginfo Operating systems & Components / Operating system package or component kernel-livepatch-5_3_18-150200_24_129-default Operating systems & Components / Operating system package or component
Vendor	SUSE

Security Bulletin

This security bulletin contains information about 7 vulnerabilities.

1) Use-after-free

EUVDB-ID: #VU61097

Risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-39698

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 Linux kernel. A local user can run a specially crafted program to trigger the use-after-free error and execute arbitrary code with elevated privileges.

Mitigation

Update the affected package the Linux Kernel (Live Patch 30 for SLE 15 SP2) to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server for SAP Applications: 15-SP2

SUSE Linux Enterprise Server: 15-SP2

SUSE Linux Enterprise Module for Live Patching: 15-SP2

SUSE Linux Enterprise High Performance Computing: 15-SP2

kernel-livepatch-SLE15-SP2_Update_30-debugsource: before 2-150200.2.1

kernel-livepatch-5_3_18-150200_24_129-default-debuginfo: before 2-150200.2.1

kernel-livepatch-5_3_18-150200_24_129-default: before 2-150200.2.1

CPE2.3

External links

https://www.suse.com/support/update/announcement/2022/suse-su-20223607-1/

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) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU68110

Risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-39189

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

Exploit availability: No

Description

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

The vulnerability exists due to incorrect handling of TLB flush operations in certain KVM_VCPU_PREEMPTED situations in the x86 KVM subsystem in the Linux kernel. An attacker with unprivileged access to the guest OS can escalate privileges on the guest.

Mitigation

Update the affected package the Linux Kernel (Live Patch 30 for SLE 15 SP2) to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server for SAP Applications: 15-SP2

SUSE Linux Enterprise Server: 15-SP2

SUSE Linux Enterprise Module for Live Patching: 15-SP2

SUSE Linux Enterprise High Performance Computing: 15-SP2

kernel-livepatch-SLE15-SP2_Update_30-debugsource: before 2-150200.2.1

kernel-livepatch-5_3_18-150200_24_129-default-debuginfo: before 2-150200.2.1

kernel-livepatch-5_3_18-150200_24_129-default: before 2-150200.2.1

CPE2.3

External links

https://www.suse.com/support/update/announcement/2022/suse-su-20223607-1/

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: #VU68422

Risk: Low

CVSSv4.0: 0.4 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

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 the Linux Kernel (Live Patch 30 for SLE 15 SP2) to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server for SAP Applications: 15-SP2

SUSE Linux Enterprise Server: 15-SP2

SUSE Linux Enterprise Module for Live Patching: 15-SP2

SUSE Linux Enterprise High Performance Computing: 15-SP2

kernel-livepatch-SLE15-SP2_Update_30-debugsource: before 2-150200.2.1

kernel-livepatch-5_3_18-150200_24_129-default-debuginfo: before 2-150200.2.1

kernel-livepatch-5_3_18-150200_24_129-default: before 2-150200.2.1

CPE2.3

External links

https://www.suse.com/support/update/announcement/2022/suse-su-20223607-1/

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) Buffer overflow

EUVDB-ID: #VU68311

Risk: High

CVSSv4.0: 6.3 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2022-41674

CWE-ID: CWE-119 - Memory corruption

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 when processing WLAN frames within the ieee80211_bss_info_update() function in net/mac80211/scan.c in Linux kernel. A remote attacker on the local network can send specially crafted WLAN frames to the affected system, trigger memory corruption and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Update the affected package the Linux Kernel (Live Patch 30 for SLE 15 SP2) to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server for SAP Applications: 15-SP2

SUSE Linux Enterprise Server: 15-SP2

SUSE Linux Enterprise Module for Live Patching: 15-SP2

SUSE Linux Enterprise High Performance Computing: 15-SP2

kernel-livepatch-SLE15-SP2_Update_30-debugsource: before 2-150200.2.1

kernel-livepatch-5_3_18-150200_24_129-default-debuginfo: before 2-150200.2.1

kernel-livepatch-5_3_18-150200_24_129-default: before 2-150200.2.1

CPE2.3

External links

https://www.suse.com/support/update/announcement/2022/suse-su-20223607-1/

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.

5) Use-after-free

EUVDB-ID: #VU68313

Risk: High

CVSSv4.0: 6.3 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

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 the Linux Kernel (Live Patch 30 for SLE 15 SP2) to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server for SAP Applications: 15-SP2

SUSE Linux Enterprise Server: 15-SP2

SUSE Linux Enterprise Module for Live Patching: 15-SP2

SUSE Linux Enterprise High Performance Computing: 15-SP2

kernel-livepatch-SLE15-SP2_Update_30-debugsource: before 2-150200.2.1

kernel-livepatch-5_3_18-150200_24_129-default-debuginfo: before 2-150200.2.1

kernel-livepatch-5_3_18-150200_24_129-default: before 2-150200.2.1

CPE2.3

External links

https://www.suse.com/support/update/announcement/2022/suse-su-20223607-1/

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.

6) Use-after-free

EUVDB-ID: #VU68314

Risk: High

CVSSv4.0: 6.3 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2022-42720

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-BSS 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 the Linux Kernel (Live Patch 30 for SLE 15 SP2) to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server for SAP Applications: 15-SP2

SUSE Linux Enterprise Server: 15-SP2

SUSE Linux Enterprise Module for Live Patching: 15-SP2

SUSE Linux Enterprise High Performance Computing: 15-SP2

kernel-livepatch-SLE15-SP2_Update_30-debugsource: before 2-150200.2.1

kernel-livepatch-5_3_18-150200_24_129-default-debuginfo: before 2-150200.2.1

kernel-livepatch-5_3_18-150200_24_129-default: before 2-150200.2.1

CPE2.3

External links

https://www.suse.com/support/update/announcement/2022/suse-su-20223607-1/

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.

7) Buffer overflow

EUVDB-ID: #VU68316

Risk: High

CVSSv4.0: 6.3 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2022-42721

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

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

The vulnerability exists due to a list management error in the mac80211 stack in the Linux kernel when handling BSS. A remote attacker on the local network can send specially crafted WLAN frames to the system, trigger linked list corruption and execute arbitrary code.

Mitigation

Update the affected package the Linux Kernel (Live Patch 30 for SLE 15 SP2) to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server for SAP Applications: 15-SP2

SUSE Linux Enterprise Server: 15-SP2

SUSE Linux Enterprise Module for Live Patching: 15-SP2

SUSE Linux Enterprise High Performance Computing: 15-SP2

kernel-livepatch-SLE15-SP2_Update_30-debugsource: before 2-150200.2.1

kernel-livepatch-5_3_18-150200_24_129-default-debuginfo: before 2-150200.2.1

kernel-livepatch-5_3_18-150200_24_129-default: before 2-150200.2.1

CPE2.3

External links

https://www.suse.com/support/update/announcement/2022/suse-su-20223607-1/

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.