SUSE update for the Linux-RT Kernel

Published: 2023-02-23 | Updated: 2023-06-27

Risk	Medium
Patch available	YES
Number of vulnerabilities	11
CVE-ID	CVE-2020-24588 CVE-2022-36280 CVE-2022-4382 CVE-2022-47929 CVE-2023-0045 CVE-2023-0122 CVE-2023-0179 CVE-2023-0266 CVE-2023-0590 CVE-2023-23454 CVE-2023-23455
CWE-ID	CWE-451 CWE-787 CWE-416 CWE-476 CWE-254 CWE-190 CWE-843
Exploitation vector	Network
Public exploit	Public exploit code for vulnerability #5 is available. Public exploit code for vulnerability #7 is available. Vulnerability #8 is being exploited in the wild.
Vulnerable software Subscribe	SUSE Real Time Module Operating systems & Components / Operating system SUSE Linux Enterprise Micro for Rancher Operating systems & Components / Operating system SUSE Linux Enterprise Micro Operating systems & Components / Operating system SUSE Linux Enterprise Live Patching Operating systems & Components / Operating system SUSE Linux Enterprise Server for SAP Applications 15 Operating systems & Components / Operating system SUSE Linux Enterprise Server 15 Operating systems & Components / Operating system SUSE Linux Enterprise Real Time 15 Operating systems & Components / Operating system SUSE Linux Enterprise High Performance Computing 15 Operating systems & Components / Operating system openSUSE Leap Micro Operating systems & Components / Operating system openSUSE Leap Operating systems & Components / Operating system kernel-livepatch-5_14_21-150400_15_11-rt-debuginfo Operating systems & Components / Operating system package or component kernel-livepatch-SLE15-SP4-RT_Update_3-debugsource Operating systems & Components / Operating system package or component kernel-livepatch-5_14_21-150400_15_11-rt Operating systems & Components / Operating system package or component kernel-rt_debug Operating systems & Components / Operating system package or component kernel-devel-rt Operating systems & Components / Operating system package or component kernel-source-rt Operating systems & Components / Operating system package or component kernel-rt_debug-debugsource Operating systems & Components / Operating system package or component kernel-rt-devel-debuginfo Operating systems & Components / Operating system package or component cluster-md-kmp-rt-debuginfo Operating systems & Components / Operating system package or component dlm-kmp-rt-debuginfo Operating systems & Components / Operating system package or component kernel-rt_debug-debuginfo Operating systems & Components / Operating system package or component ocfs2-kmp-rt-debuginfo Operating systems & Components / Operating system package or component gfs2-kmp-rt-debuginfo Operating systems & Components / Operating system package or component kernel-rt_debug-devel-debuginfo Operating systems & Components / Operating system package or component kernel-rt_debug-devel Operating systems & Components / Operating system package or component gfs2-kmp-rt Operating systems & Components / Operating system package or component dlm-kmp-rt Operating systems & Components / Operating system package or component cluster-md-kmp-rt Operating systems & Components / Operating system package or component kernel-syms-rt Operating systems & Components / Operating system package or component kernel-rt-devel Operating systems & Components / Operating system package or component ocfs2-kmp-rt Operating systems & Components / Operating system package or component kernel-rt-debugsource Operating systems & Components / Operating system package or component kernel-rt-debuginfo Operating systems & Components / Operating system package or component kernel-rt Operating systems & Components / Operating system package or component
Vendor	SUSE

Security Bulletin

This security bulletin contains information about 11 vulnerabilities.

1) Spoofing attack

EUVDB-ID: #VU53098

Risk: Low

CVSSv3.1: 4.7 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-24588

CWE-ID: CWE-451 - User Interface (UI) Misrepresentation of Critical Information (Clickjacking, spoofing)

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform spoofing attack.

The vulnerability exists due to incorrect processing of user-supplied data in Windows Wireless Networking. A remote attacker on the local network can spoof page content.

Mitigation

Update the affected package the Linux-RT Kernel to the latest version.

Vulnerable software versions

SUSE Real Time Module: 15-SP4

SUSE Linux Enterprise Micro for Rancher: 5.3

SUSE Linux Enterprise Micro: 5.3 - 5.4

SUSE Linux Enterprise Live Patching: 15-SP4

SUSE Linux Enterprise Server for SAP Applications 15: SP4

SUSE Linux Enterprise Server 15: SP4

SUSE Linux Enterprise Real Time 15: SP4

SUSE Linux Enterprise High Performance Computing 15: SP4

openSUSE Leap Micro: 5.3

openSUSE Leap: 15.4

kernel-livepatch-5_14_21-150400_15_11-rt-debuginfo: before 1-150400.1.3.1

kernel-livepatch-SLE15-SP4-RT_Update_3-debugsource: before 1-150400.1.3.1

kernel-livepatch-5_14_21-150400_15_11-rt: before 1-150400.1.3.1

kernel-rt_debug: before 5.14.21-150400.15.11.1

kernel-devel-rt: before 5.14.21-150400.15.11.1

kernel-source-rt: before 5.14.21-150400.15.11.1

kernel-rt_debug-debugsource: before 5.14.21-150400.15.11.1

kernel-rt-devel-debuginfo: before 5.14.21-150400.15.11.1

cluster-md-kmp-rt-debuginfo: before 5.14.21-150400.15.11.1

dlm-kmp-rt-debuginfo: before 5.14.21-150400.15.11.1

kernel-rt_debug-debuginfo: before 5.14.21-150400.15.11.1

ocfs2-kmp-rt-debuginfo: before 5.14.21-150400.15.11.1

gfs2-kmp-rt-debuginfo: before 5.14.21-150400.15.11.1

kernel-rt_debug-devel-debuginfo: before 5.14.21-150400.15.11.1

kernel-rt_debug-devel: before 5.14.21-150400.15.11.1

gfs2-kmp-rt: before 5.14.21-150400.15.11.1

dlm-kmp-rt: before 5.14.21-150400.15.11.1

cluster-md-kmp-rt: before 5.14.21-150400.15.11.1

kernel-syms-rt: before 5.14.21-150400.15.11.1

kernel-rt-devel: before 5.14.21-150400.15.11.1

ocfs2-kmp-rt: before 5.14.21-150400.15.11.1

kernel-rt-debugsource: before 5.14.21-150400.15.11.1

kernel-rt-debuginfo: before 5.14.21-150400.15.11.1

kernel-rt: before 5.14.21-150400.15.11.1

External links

http://www.suse.com/support/update/announcement/2023/suse-su-20230488-1/

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.

2) Out-of-bounds write

EUVDB-ID: #VU71480

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-2022-36280

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

Exploit availability: No

Description

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

The vulnerability exists due to a boundary error within the vmw_kms_cursor_snoo() function in drivers/gpu/vmxgfx/vmxgfx_kms.c in vmwgfx VMWare driver. A local user can trigger an out-of-bounds write and perform a denial of service (DoS) attack.

Mitigation

Update the affected package the Linux-RT Kernel to the latest version.

Vulnerable software versions

SUSE Real Time Module: 15-SP4

SUSE Linux Enterprise Micro for Rancher: 5.3

SUSE Linux Enterprise Micro: 5.3 - 5.4

SUSE Linux Enterprise Live Patching: 15-SP4

SUSE Linux Enterprise Server for SAP Applications 15: SP4

SUSE Linux Enterprise Server 15: SP4

SUSE Linux Enterprise Real Time 15: SP4

SUSE Linux Enterprise High Performance Computing 15: SP4

openSUSE Leap Micro: 5.3

openSUSE Leap: 15.4

kernel-livepatch-5_14_21-150400_15_11-rt-debuginfo: before 1-150400.1.3.1

kernel-livepatch-SLE15-SP4-RT_Update_3-debugsource: before 1-150400.1.3.1

kernel-livepatch-5_14_21-150400_15_11-rt: before 1-150400.1.3.1

kernel-rt_debug: before 5.14.21-150400.15.11.1

kernel-devel-rt: before 5.14.21-150400.15.11.1

kernel-source-rt: before 5.14.21-150400.15.11.1

kernel-rt_debug-debugsource: before 5.14.21-150400.15.11.1

kernel-rt-devel-debuginfo: before 5.14.21-150400.15.11.1

cluster-md-kmp-rt-debuginfo: before 5.14.21-150400.15.11.1

dlm-kmp-rt-debuginfo: before 5.14.21-150400.15.11.1

kernel-rt_debug-debuginfo: before 5.14.21-150400.15.11.1

ocfs2-kmp-rt-debuginfo: before 5.14.21-150400.15.11.1

gfs2-kmp-rt-debuginfo: before 5.14.21-150400.15.11.1

kernel-rt_debug-devel-debuginfo: before 5.14.21-150400.15.11.1

kernel-rt_debug-devel: before 5.14.21-150400.15.11.1

gfs2-kmp-rt: before 5.14.21-150400.15.11.1

dlm-kmp-rt: before 5.14.21-150400.15.11.1

cluster-md-kmp-rt: before 5.14.21-150400.15.11.1

kernel-syms-rt: before 5.14.21-150400.15.11.1

kernel-rt-devel: before 5.14.21-150400.15.11.1

ocfs2-kmp-rt: before 5.14.21-150400.15.11.1

kernel-rt-debugsource: before 5.14.21-150400.15.11.1

kernel-rt-debuginfo: before 5.14.21-150400.15.11.1

kernel-rt: before 5.14.21-150400.15.11.1

External links

http://www.suse.com/support/update/announcement/2023/suse-su-20230488-1/

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: #VU72328

Risk: Low

CVSSv3.1: 5.9 [CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-4382

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows an attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error within the gadgetfs Linux driver. An attacker with physical access to the system can trigger a use-after-free by manipulating the external device with gadgetfs and execute arbitrary code.

Mitigation

Update the affected package the Linux-RT Kernel to the latest version.

Vulnerable software versions

SUSE Real Time Module: 15-SP4

SUSE Linux Enterprise Micro for Rancher: 5.3

SUSE Linux Enterprise Micro: 5.3 - 5.4

SUSE Linux Enterprise Live Patching: 15-SP4

SUSE Linux Enterprise Server for SAP Applications 15: SP4

SUSE Linux Enterprise Server 15: SP4

SUSE Linux Enterprise Real Time 15: SP4

SUSE Linux Enterprise High Performance Computing 15: SP4

openSUSE Leap Micro: 5.3

openSUSE Leap: 15.4

kernel-livepatch-5_14_21-150400_15_11-rt-debuginfo: before 1-150400.1.3.1

kernel-livepatch-SLE15-SP4-RT_Update_3-debugsource: before 1-150400.1.3.1

kernel-livepatch-5_14_21-150400_15_11-rt: before 1-150400.1.3.1

kernel-rt_debug: before 5.14.21-150400.15.11.1

kernel-devel-rt: before 5.14.21-150400.15.11.1

kernel-source-rt: before 5.14.21-150400.15.11.1

kernel-rt_debug-debugsource: before 5.14.21-150400.15.11.1

kernel-rt-devel-debuginfo: before 5.14.21-150400.15.11.1

cluster-md-kmp-rt-debuginfo: before 5.14.21-150400.15.11.1

dlm-kmp-rt-debuginfo: before 5.14.21-150400.15.11.1

kernel-rt_debug-debuginfo: before 5.14.21-150400.15.11.1

ocfs2-kmp-rt-debuginfo: before 5.14.21-150400.15.11.1

gfs2-kmp-rt-debuginfo: before 5.14.21-150400.15.11.1

kernel-rt_debug-devel-debuginfo: before 5.14.21-150400.15.11.1

kernel-rt_debug-devel: before 5.14.21-150400.15.11.1

gfs2-kmp-rt: before 5.14.21-150400.15.11.1

dlm-kmp-rt: before 5.14.21-150400.15.11.1

cluster-md-kmp-rt: before 5.14.21-150400.15.11.1

kernel-syms-rt: before 5.14.21-150400.15.11.1

kernel-rt-devel: before 5.14.21-150400.15.11.1

ocfs2-kmp-rt: before 5.14.21-150400.15.11.1

kernel-rt-debugsource: before 5.14.21-150400.15.11.1

kernel-rt-debuginfo: before 5.14.21-150400.15.11.1

kernel-rt: before 5.14.21-150400.15.11.1

External links

http://www.suse.com/support/update/announcement/2023/suse-su-20230488-1/

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.

4) NULL pointer dereference

EUVDB-ID: #VU71479

Risk: Medium

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-2022-47929

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 traffic control subsystem in Linux kernel. A local user can pass pass a specially crafted traffic control configuration that is set up with "tc qdisc" and "tc class" commands and perform a denial of service (DoS) attack.

Mitigation

Update the affected package the Linux-RT Kernel to the latest version.

Vulnerable software versions

SUSE Real Time Module: 15-SP4

SUSE Linux Enterprise Micro for Rancher: 5.3

SUSE Linux Enterprise Micro: 5.3 - 5.4

SUSE Linux Enterprise Live Patching: 15-SP4

SUSE Linux Enterprise Server for SAP Applications 15: SP4

SUSE Linux Enterprise Server 15: SP4

SUSE Linux Enterprise Real Time 15: SP4

SUSE Linux Enterprise High Performance Computing 15: SP4

openSUSE Leap Micro: 5.3

openSUSE Leap: 15.4

kernel-livepatch-5_14_21-150400_15_11-rt-debuginfo: before 1-150400.1.3.1

kernel-livepatch-SLE15-SP4-RT_Update_3-debugsource: before 1-150400.1.3.1

kernel-livepatch-5_14_21-150400_15_11-rt: before 1-150400.1.3.1

kernel-rt_debug: before 5.14.21-150400.15.11.1

kernel-devel-rt: before 5.14.21-150400.15.11.1

kernel-source-rt: before 5.14.21-150400.15.11.1

kernel-rt_debug-debugsource: before 5.14.21-150400.15.11.1

kernel-rt-devel-debuginfo: before 5.14.21-150400.15.11.1

cluster-md-kmp-rt-debuginfo: before 5.14.21-150400.15.11.1

dlm-kmp-rt-debuginfo: before 5.14.21-150400.15.11.1

kernel-rt_debug-debuginfo: before 5.14.21-150400.15.11.1

ocfs2-kmp-rt-debuginfo: before 5.14.21-150400.15.11.1

gfs2-kmp-rt-debuginfo: before 5.14.21-150400.15.11.1

kernel-rt_debug-devel-debuginfo: before 5.14.21-150400.15.11.1

kernel-rt_debug-devel: before 5.14.21-150400.15.11.1

gfs2-kmp-rt: before 5.14.21-150400.15.11.1

dlm-kmp-rt: before 5.14.21-150400.15.11.1

cluster-md-kmp-rt: before 5.14.21-150400.15.11.1

kernel-syms-rt: before 5.14.21-150400.15.11.1

kernel-rt-devel: before 5.14.21-150400.15.11.1

ocfs2-kmp-rt: before 5.14.21-150400.15.11.1

kernel-rt-debugsource: before 5.14.21-150400.15.11.1

kernel-rt-debuginfo: before 5.14.21-150400.15.11.1

kernel-rt: before 5.14.21-150400.15.11.1

External links

http://www.suse.com/support/update/announcement/2023/suse-su-20230488-1/

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) Security features bypass

EUVDB-ID: #VU72469

Risk: Low

CVSSv3.1: 2.6 [CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N/E:P/RL:O/RC:C]

CVE-ID: CVE-2023-0045

CWE-ID: CWE-254 - Security Features

Exploit availability: Yes

Description

The vulnerability allows a local user to bypass implemented security restrictions.

The vulnerability exists due to Linux kernel does not correctly mitigate SMT attacks. A local user can bypass Spectre-BTI user space mitigations and gain access to sensitive information.

Mitigation

Update the affected package the Linux-RT Kernel to the latest version.

Vulnerable software versions

SUSE Real Time Module: 15-SP4

SUSE Linux Enterprise Micro for Rancher: 5.3

SUSE Linux Enterprise Micro: 5.3 - 5.4

SUSE Linux Enterprise Live Patching: 15-SP4

SUSE Linux Enterprise Server for SAP Applications 15: SP4

SUSE Linux Enterprise Server 15: SP4

SUSE Linux Enterprise Real Time 15: SP4

SUSE Linux Enterprise High Performance Computing 15: SP4

openSUSE Leap Micro: 5.3

openSUSE Leap: 15.4

kernel-livepatch-5_14_21-150400_15_11-rt-debuginfo: before 1-150400.1.3.1

kernel-livepatch-SLE15-SP4-RT_Update_3-debugsource: before 1-150400.1.3.1

kernel-livepatch-5_14_21-150400_15_11-rt: before 1-150400.1.3.1

kernel-rt_debug: before 5.14.21-150400.15.11.1

kernel-devel-rt: before 5.14.21-150400.15.11.1

kernel-source-rt: before 5.14.21-150400.15.11.1

kernel-rt_debug-debugsource: before 5.14.21-150400.15.11.1

kernel-rt-devel-debuginfo: before 5.14.21-150400.15.11.1

cluster-md-kmp-rt-debuginfo: before 5.14.21-150400.15.11.1

dlm-kmp-rt-debuginfo: before 5.14.21-150400.15.11.1

kernel-rt_debug-debuginfo: before 5.14.21-150400.15.11.1

ocfs2-kmp-rt-debuginfo: before 5.14.21-150400.15.11.1

gfs2-kmp-rt-debuginfo: before 5.14.21-150400.15.11.1

kernel-rt_debug-devel-debuginfo: before 5.14.21-150400.15.11.1

kernel-rt_debug-devel: before 5.14.21-150400.15.11.1

gfs2-kmp-rt: before 5.14.21-150400.15.11.1

dlm-kmp-rt: before 5.14.21-150400.15.11.1

cluster-md-kmp-rt: before 5.14.21-150400.15.11.1

kernel-syms-rt: before 5.14.21-150400.15.11.1

kernel-rt-devel: before 5.14.21-150400.15.11.1

ocfs2-kmp-rt: before 5.14.21-150400.15.11.1

kernel-rt-debugsource: before 5.14.21-150400.15.11.1

kernel-rt-debuginfo: before 5.14.21-150400.15.11.1

kernel-rt: before 5.14.21-150400.15.11.1

External links

http://www.suse.com/support/update/announcement/2023/suse-su-20230488-1/

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) NULL pointer dereference

EUVDB-ID: #VU71138

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-2023-0122

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

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

The vulnerability exists due to a NULL pointer dereference error within the nvmet_setup_auth(0 function in drivers/nvme/target/auth.c. A remote attacker can send specially crafted data to the system and perform a denial of service (DoS) attack.

Mitigation

Update the affected package the Linux-RT Kernel to the latest version.

Vulnerable software versions

SUSE Real Time Module: 15-SP4

SUSE Linux Enterprise Micro for Rancher: 5.3

SUSE Linux Enterprise Micro: 5.3 - 5.4

SUSE Linux Enterprise Live Patching: 15-SP4

SUSE Linux Enterprise Server for SAP Applications 15: SP4

SUSE Linux Enterprise Server 15: SP4

SUSE Linux Enterprise Real Time 15: SP4

SUSE Linux Enterprise High Performance Computing 15: SP4

openSUSE Leap Micro: 5.3

openSUSE Leap: 15.4

kernel-livepatch-5_14_21-150400_15_11-rt-debuginfo: before 1-150400.1.3.1

kernel-livepatch-SLE15-SP4-RT_Update_3-debugsource: before 1-150400.1.3.1

kernel-livepatch-5_14_21-150400_15_11-rt: before 1-150400.1.3.1

kernel-rt_debug: before 5.14.21-150400.15.11.1

kernel-devel-rt: before 5.14.21-150400.15.11.1

kernel-source-rt: before 5.14.21-150400.15.11.1

kernel-rt_debug-debugsource: before 5.14.21-150400.15.11.1

kernel-rt-devel-debuginfo: before 5.14.21-150400.15.11.1

cluster-md-kmp-rt-debuginfo: before 5.14.21-150400.15.11.1

dlm-kmp-rt-debuginfo: before 5.14.21-150400.15.11.1

kernel-rt_debug-debuginfo: before 5.14.21-150400.15.11.1

ocfs2-kmp-rt-debuginfo: before 5.14.21-150400.15.11.1

gfs2-kmp-rt-debuginfo: before 5.14.21-150400.15.11.1

kernel-rt_debug-devel-debuginfo: before 5.14.21-150400.15.11.1

kernel-rt_debug-devel: before 5.14.21-150400.15.11.1

gfs2-kmp-rt: before 5.14.21-150400.15.11.1

dlm-kmp-rt: before 5.14.21-150400.15.11.1

cluster-md-kmp-rt: before 5.14.21-150400.15.11.1

kernel-syms-rt: before 5.14.21-150400.15.11.1

kernel-rt-devel: before 5.14.21-150400.15.11.1

ocfs2-kmp-rt: before 5.14.21-150400.15.11.1

kernel-rt-debugsource: before 5.14.21-150400.15.11.1

kernel-rt-debuginfo: before 5.14.21-150400.15.11.1

kernel-rt: before 5.14.21-150400.15.11.1

External links

http://www.suse.com/support/update/announcement/2023/suse-su-20230488-1/

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.

7) Integer overflow

EUVDB-ID: #VU71173

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-2023-0179

CWE-ID: CWE-190 - Integer overflow

Exploit availability: Yes

Description

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

The vulnerability exists due to an integer overflow within the nft_payload_copy_vlan() function in Linux kernel Netfilter. A local user can trigger an integer overflow and execute arbitrary code with elevated privileges.

Mitigation

Update the affected package the Linux-RT Kernel to the latest version.

Vulnerable software versions

SUSE Real Time Module: 15-SP4

SUSE Linux Enterprise Micro for Rancher: 5.3

SUSE Linux Enterprise Micro: 5.3 - 5.4

SUSE Linux Enterprise Live Patching: 15-SP4

SUSE Linux Enterprise Server for SAP Applications 15: SP4

SUSE Linux Enterprise Server 15: SP4

SUSE Linux Enterprise Real Time 15: SP4

SUSE Linux Enterprise High Performance Computing 15: SP4

openSUSE Leap Micro: 5.3

openSUSE Leap: 15.4

kernel-livepatch-5_14_21-150400_15_11-rt-debuginfo: before 1-150400.1.3.1

kernel-livepatch-SLE15-SP4-RT_Update_3-debugsource: before 1-150400.1.3.1

kernel-livepatch-5_14_21-150400_15_11-rt: before 1-150400.1.3.1

kernel-rt_debug: before 5.14.21-150400.15.11.1

kernel-devel-rt: before 5.14.21-150400.15.11.1

kernel-source-rt: before 5.14.21-150400.15.11.1

kernel-rt_debug-debugsource: before 5.14.21-150400.15.11.1

kernel-rt-devel-debuginfo: before 5.14.21-150400.15.11.1

cluster-md-kmp-rt-debuginfo: before 5.14.21-150400.15.11.1

dlm-kmp-rt-debuginfo: before 5.14.21-150400.15.11.1

kernel-rt_debug-debuginfo: before 5.14.21-150400.15.11.1

ocfs2-kmp-rt-debuginfo: before 5.14.21-150400.15.11.1

gfs2-kmp-rt-debuginfo: before 5.14.21-150400.15.11.1

kernel-rt_debug-devel-debuginfo: before 5.14.21-150400.15.11.1

kernel-rt_debug-devel: before 5.14.21-150400.15.11.1

gfs2-kmp-rt: before 5.14.21-150400.15.11.1

dlm-kmp-rt: before 5.14.21-150400.15.11.1

cluster-md-kmp-rt: before 5.14.21-150400.15.11.1

kernel-syms-rt: before 5.14.21-150400.15.11.1

kernel-rt-devel: before 5.14.21-150400.15.11.1

ocfs2-kmp-rt: before 5.14.21-150400.15.11.1

kernel-rt-debugsource: before 5.14.21-150400.15.11.1

kernel-rt-debuginfo: before 5.14.21-150400.15.11.1

kernel-rt: before 5.14.21-150400.15.11.1

External links

http://www.suse.com/support/update/announcement/2023/suse-su-20230488-1/

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.

8) Use-after-free

EUVDB-ID: #VU71482

Risk: High

CVSSv3.1: 8.4 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:H/RL:O/RC:C]

CVE-ID: CVE-2023-0266

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 snd_ctl_elem_read() function in the Linux kernel sound subsystem. A local user can trigger a use-after-free error and execute arbitrary code on the system.

Note, the vulnerability is being actively exploited in the wild.

Mitigation

Update the affected package the Linux-RT Kernel to the latest version.

Vulnerable software versions

SUSE Real Time Module: 15-SP4

SUSE Linux Enterprise Micro for Rancher: 5.3

SUSE Linux Enterprise Micro: 5.3 - 5.4

SUSE Linux Enterprise Live Patching: 15-SP4

SUSE Linux Enterprise Server for SAP Applications 15: SP4

SUSE Linux Enterprise Server 15: SP4

SUSE Linux Enterprise Real Time 15: SP4

SUSE Linux Enterprise High Performance Computing 15: SP4

openSUSE Leap Micro: 5.3

openSUSE Leap: 15.4

kernel-livepatch-5_14_21-150400_15_11-rt-debuginfo: before 1-150400.1.3.1

kernel-livepatch-SLE15-SP4-RT_Update_3-debugsource: before 1-150400.1.3.1

kernel-livepatch-5_14_21-150400_15_11-rt: before 1-150400.1.3.1

kernel-rt_debug: before 5.14.21-150400.15.11.1

kernel-devel-rt: before 5.14.21-150400.15.11.1

kernel-source-rt: before 5.14.21-150400.15.11.1

kernel-rt_debug-debugsource: before 5.14.21-150400.15.11.1

kernel-rt-devel-debuginfo: before 5.14.21-150400.15.11.1

cluster-md-kmp-rt-debuginfo: before 5.14.21-150400.15.11.1

dlm-kmp-rt-debuginfo: before 5.14.21-150400.15.11.1

kernel-rt_debug-debuginfo: before 5.14.21-150400.15.11.1

ocfs2-kmp-rt-debuginfo: before 5.14.21-150400.15.11.1

gfs2-kmp-rt-debuginfo: before 5.14.21-150400.15.11.1

kernel-rt_debug-devel-debuginfo: before 5.14.21-150400.15.11.1

kernel-rt_debug-devel: before 5.14.21-150400.15.11.1

gfs2-kmp-rt: before 5.14.21-150400.15.11.1

dlm-kmp-rt: before 5.14.21-150400.15.11.1

cluster-md-kmp-rt: before 5.14.21-150400.15.11.1

kernel-syms-rt: before 5.14.21-150400.15.11.1

kernel-rt-devel: before 5.14.21-150400.15.11.1

ocfs2-kmp-rt: before 5.14.21-150400.15.11.1

kernel-rt-debugsource: before 5.14.21-150400.15.11.1

kernel-rt-debuginfo: before 5.14.21-150400.15.11.1

kernel-rt: before 5.14.21-150400.15.11.1

External links

http://www.suse.com/support/update/announcement/2023/suse-su-20230488-1/

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.

9) Use-after-free

EUVDB-ID: #VU72098

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-2023-0590

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 qdisc_graft() function in net/sched/sch_api.c. A local user can trigger a use-after-free error and crash the kernel.

Mitigation

Update the affected package the Linux-RT Kernel to the latest version.

Vulnerable software versions

SUSE Real Time Module: 15-SP4

SUSE Linux Enterprise Micro for Rancher: 5.3

SUSE Linux Enterprise Micro: 5.3 - 5.4

SUSE Linux Enterprise Live Patching: 15-SP4

SUSE Linux Enterprise Server for SAP Applications 15: SP4

SUSE Linux Enterprise Server 15: SP4

SUSE Linux Enterprise Real Time 15: SP4

SUSE Linux Enterprise High Performance Computing 15: SP4

openSUSE Leap Micro: 5.3

openSUSE Leap: 15.4

kernel-livepatch-5_14_21-150400_15_11-rt-debuginfo: before 1-150400.1.3.1

kernel-livepatch-SLE15-SP4-RT_Update_3-debugsource: before 1-150400.1.3.1

kernel-livepatch-5_14_21-150400_15_11-rt: before 1-150400.1.3.1

kernel-rt_debug: before 5.14.21-150400.15.11.1

kernel-devel-rt: before 5.14.21-150400.15.11.1

kernel-source-rt: before 5.14.21-150400.15.11.1

kernel-rt_debug-debugsource: before 5.14.21-150400.15.11.1

kernel-rt-devel-debuginfo: before 5.14.21-150400.15.11.1

cluster-md-kmp-rt-debuginfo: before 5.14.21-150400.15.11.1

dlm-kmp-rt-debuginfo: before 5.14.21-150400.15.11.1

kernel-rt_debug-debuginfo: before 5.14.21-150400.15.11.1

ocfs2-kmp-rt-debuginfo: before 5.14.21-150400.15.11.1

gfs2-kmp-rt-debuginfo: before 5.14.21-150400.15.11.1

kernel-rt_debug-devel-debuginfo: before 5.14.21-150400.15.11.1

kernel-rt_debug-devel: before 5.14.21-150400.15.11.1

gfs2-kmp-rt: before 5.14.21-150400.15.11.1

dlm-kmp-rt: before 5.14.21-150400.15.11.1

cluster-md-kmp-rt: before 5.14.21-150400.15.11.1

kernel-syms-rt: before 5.14.21-150400.15.11.1

kernel-rt-devel: before 5.14.21-150400.15.11.1

ocfs2-kmp-rt: before 5.14.21-150400.15.11.1

kernel-rt-debugsource: before 5.14.21-150400.15.11.1

kernel-rt-debuginfo: before 5.14.21-150400.15.11.1

kernel-rt: before 5.14.21-150400.15.11.1

External links

http://www.suse.com/support/update/announcement/2023/suse-su-20230488-1/

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.

10) Type Confusion

EUVDB-ID: #VU71478

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-2023-23454

CWE-ID: CWE-843 - Type confusion

Exploit availability: No

Description

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

The vulnerability exists due to a type confusion error within the cbq_classify() function in net/sched/sch_cbq.c in the Linux kernel. A local user can trigger a type confusion error and crash the kernel.

Mitigation

Update the affected package the Linux-RT Kernel to the latest version.

Vulnerable software versions

SUSE Real Time Module: 15-SP4

SUSE Linux Enterprise Micro for Rancher: 5.3

SUSE Linux Enterprise Micro: 5.3 - 5.4

SUSE Linux Enterprise Live Patching: 15-SP4

SUSE Linux Enterprise Server for SAP Applications 15: SP4

SUSE Linux Enterprise Server 15: SP4

SUSE Linux Enterprise Real Time 15: SP4

SUSE Linux Enterprise High Performance Computing 15: SP4

openSUSE Leap Micro: 5.3

openSUSE Leap: 15.4

kernel-livepatch-5_14_21-150400_15_11-rt-debuginfo: before 1-150400.1.3.1

kernel-livepatch-SLE15-SP4-RT_Update_3-debugsource: before 1-150400.1.3.1

kernel-livepatch-5_14_21-150400_15_11-rt: before 1-150400.1.3.1

kernel-rt_debug: before 5.14.21-150400.15.11.1

kernel-devel-rt: before 5.14.21-150400.15.11.1

kernel-source-rt: before 5.14.21-150400.15.11.1

kernel-rt_debug-debugsource: before 5.14.21-150400.15.11.1

kernel-rt-devel-debuginfo: before 5.14.21-150400.15.11.1

cluster-md-kmp-rt-debuginfo: before 5.14.21-150400.15.11.1

dlm-kmp-rt-debuginfo: before 5.14.21-150400.15.11.1

kernel-rt_debug-debuginfo: before 5.14.21-150400.15.11.1

ocfs2-kmp-rt-debuginfo: before 5.14.21-150400.15.11.1

gfs2-kmp-rt-debuginfo: before 5.14.21-150400.15.11.1

kernel-rt_debug-devel-debuginfo: before 5.14.21-150400.15.11.1

kernel-rt_debug-devel: before 5.14.21-150400.15.11.1

gfs2-kmp-rt: before 5.14.21-150400.15.11.1

dlm-kmp-rt: before 5.14.21-150400.15.11.1

cluster-md-kmp-rt: before 5.14.21-150400.15.11.1

kernel-syms-rt: before 5.14.21-150400.15.11.1

kernel-rt-devel: before 5.14.21-150400.15.11.1

ocfs2-kmp-rt: before 5.14.21-150400.15.11.1

kernel-rt-debugsource: before 5.14.21-150400.15.11.1

kernel-rt-debuginfo: before 5.14.21-150400.15.11.1

kernel-rt: before 5.14.21-150400.15.11.1

External links

http://www.suse.com/support/update/announcement/2023/suse-su-20230488-1/

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.

11) Type Confusion

EUVDB-ID: #VU71477

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-2023-23455

CWE-ID: CWE-843 - Type confusion

Exploit availability: No

Description

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

The vulnerability exists due to a type confusion error within the atm_tc_enqueue() function in net/sched/sch_atm.c in the Linux kernel. A local user can trigger a type confusion error and perform a denial of service (DoS) attack.

Mitigation

Update the affected package the Linux-RT Kernel to the latest version.

Vulnerable software versions

SUSE Real Time Module: 15-SP4

SUSE Linux Enterprise Micro for Rancher: 5.3

SUSE Linux Enterprise Micro: 5.3 - 5.4

SUSE Linux Enterprise Live Patching: 15-SP4

SUSE Linux Enterprise Server for SAP Applications 15: SP4

SUSE Linux Enterprise Server 15: SP4

SUSE Linux Enterprise Real Time 15: SP4

SUSE Linux Enterprise High Performance Computing 15: SP4

openSUSE Leap Micro: 5.3

openSUSE Leap: 15.4

kernel-livepatch-5_14_21-150400_15_11-rt-debuginfo: before 1-150400.1.3.1

kernel-livepatch-SLE15-SP4-RT_Update_3-debugsource: before 1-150400.1.3.1

kernel-livepatch-5_14_21-150400_15_11-rt: before 1-150400.1.3.1

kernel-rt_debug: before 5.14.21-150400.15.11.1

kernel-devel-rt: before 5.14.21-150400.15.11.1

kernel-source-rt: before 5.14.21-150400.15.11.1

kernel-rt_debug-debugsource: before 5.14.21-150400.15.11.1

kernel-rt-devel-debuginfo: before 5.14.21-150400.15.11.1

cluster-md-kmp-rt-debuginfo: before 5.14.21-150400.15.11.1

dlm-kmp-rt-debuginfo: before 5.14.21-150400.15.11.1

kernel-rt_debug-debuginfo: before 5.14.21-150400.15.11.1

ocfs2-kmp-rt-debuginfo: before 5.14.21-150400.15.11.1

gfs2-kmp-rt-debuginfo: before 5.14.21-150400.15.11.1

kernel-rt_debug-devel-debuginfo: before 5.14.21-150400.15.11.1

kernel-rt_debug-devel: before 5.14.21-150400.15.11.1

gfs2-kmp-rt: before 5.14.21-150400.15.11.1

dlm-kmp-rt: before 5.14.21-150400.15.11.1

cluster-md-kmp-rt: before 5.14.21-150400.15.11.1

kernel-syms-rt: before 5.14.21-150400.15.11.1

kernel-rt-devel: before 5.14.21-150400.15.11.1

ocfs2-kmp-rt: before 5.14.21-150400.15.11.1

kernel-rt-debugsource: before 5.14.21-150400.15.11.1

kernel-rt-debuginfo: before 5.14.21-150400.15.11.1

kernel-rt: before 5.14.21-150400.15.11.1

External links

http://www.suse.com/support/update/announcement/2023/suse-su-20230488-1/

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.