SUSE update for the Linux Kernel

Published: 2023-03-16

Risk	Low
Patch available	YES
Number of vulnerabilities	7
CVE-ID	CVE-2021-4203 CVE-2022-38096 CVE-2022-4129 CVE-2023-0597 CVE-2023-1118 CVE-2023-23559 CVE-2023-26545
CWE-ID	CWE-416 CWE-476 CWE-401 CWE-190 CWE-415
Exploitation vector	Local
Public exploit	N/A
Vulnerable software Subscribe	SUSE Linux Enterprise Real Time 12 Operating systems & Components / Operating system SUSE Linux Enterprise Server 12 Operating systems & Components / Operating system SUSE Linux Enterprise High Performance Computing 12 Operating systems & Components / Operating system kernel-rt_debug Operating systems & Components / Operating system package or component kernel-rt Operating systems & Components / Operating system package or component kernel-source-rt Operating systems & Components / Operating system package or component kernel-devel-rt Operating systems & Components / Operating system package or component dlm-kmp-rt-debuginfo Operating systems & Components / Operating system package or component kernel-rt-devel-debuginfo Operating systems & Components / Operating system package or component kernel-rt-debugsource Operating systems & Components / Operating system package or component ocfs2-kmp-rt-debuginfo Operating systems & Components / Operating system package or component kernel-rt_debug-devel Operating systems & Components / Operating system package or component kernel-rt_debug-debugsource Operating systems & Components / Operating system package or component kernel-syms-rt Operating systems & Components / Operating system package or component gfs2-kmp-rt-debuginfo Operating systems & Components / Operating system package or component dlm-kmp-rt Operating systems & Components / Operating system package or component kernel-rt-base Operating systems & Components / Operating system package or component kernel-rt-devel Operating systems & Components / Operating system package or component cluster-md-kmp-rt Operating systems & Components / Operating system package or component gfs2-kmp-rt Operating systems & Components / Operating system package or component cluster-md-kmp-rt-debuginfo Operating systems & Components / Operating system package or component kernel-rt-debuginfo Operating systems & Components / Operating system package or component kernel-rt-base-debuginfo Operating systems & Components / Operating system package or component kernel-rt_debug-debuginfo Operating systems & Components / Operating system package or component ocfs2-kmp-rt Operating systems & Components / Operating system package or component kernel-rt_debug-devel-debuginfo 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: #VU63838

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-2021-4203

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 sock_getsockopt() function in net/core/sock.c due to SO_PEERCRED and SO_PEERGROUPS race with listen() function (and connect() function) in the Linux kernel. A local user can exploit the use-after-free error and crash the system or escalate privileges on the system.

Mitigation

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

Vulnerable software versions

SUSE Linux Enterprise Real Time 12: SP5

SUSE Linux Enterprise Server 12: SP5

SUSE Linux Enterprise High Performance Computing 12: SP5

kernel-rt_debug: before 4.12.14-10.118.1

kernel-rt: before 4.12.14-10.118.1

kernel-source-rt: before 4.12.14-10.118.1

kernel-devel-rt: before 4.12.14-10.118.1

dlm-kmp-rt-debuginfo: before 4.12.14-10.118.1

kernel-rt-devel-debuginfo: before 4.12.14-10.118.1

kernel-rt-debugsource: before 4.12.14-10.118.1

ocfs2-kmp-rt-debuginfo: before 4.12.14-10.118.1

kernel-rt_debug-devel: before 4.12.14-10.118.1

kernel-rt_debug-debugsource: before 4.12.14-10.118.1

kernel-syms-rt: before 4.12.14-10.118.1

gfs2-kmp-rt-debuginfo: before 4.12.14-10.118.1

dlm-kmp-rt: before 4.12.14-10.118.1

kernel-rt-base: before 4.12.14-10.118.1

kernel-rt-devel: before 4.12.14-10.118.1

cluster-md-kmp-rt: before 4.12.14-10.118.1

gfs2-kmp-rt: before 4.12.14-10.118.1

cluster-md-kmp-rt-debuginfo: before 4.12.14-10.118.1

kernel-rt-debuginfo: before 4.12.14-10.118.1

kernel-rt-base-debuginfo: before 4.12.14-10.118.1

kernel-rt_debug-debuginfo: before 4.12.14-10.118.1

ocfs2-kmp-rt: before 4.12.14-10.118.1

kernel-rt_debug-devel-debuginfo: before 4.12.14-10.118.1

External links

http://www.suse.com/support/update/announcement/2023/suse-su-20230747-1/

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: #VU73764

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-2022-38096

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 vmwgfx driver in drivers/gpu/vmxgfx/vmxgfx_execbuf.c in GPU component of Linux kernel with device file '/dev/dri/renderD128 (or Dxxx)'. A local user can perform a denial of service (DoS) attack.

Mitigation

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

Vulnerable software versions

SUSE Linux Enterprise Real Time 12: SP5

SUSE Linux Enterprise Server 12: SP5

SUSE Linux Enterprise High Performance Computing 12: SP5

kernel-rt_debug: before 4.12.14-10.118.1

kernel-rt: before 4.12.14-10.118.1

kernel-source-rt: before 4.12.14-10.118.1

kernel-devel-rt: before 4.12.14-10.118.1

dlm-kmp-rt-debuginfo: before 4.12.14-10.118.1

kernel-rt-devel-debuginfo: before 4.12.14-10.118.1

kernel-rt-debugsource: before 4.12.14-10.118.1

ocfs2-kmp-rt-debuginfo: before 4.12.14-10.118.1

kernel-rt_debug-devel: before 4.12.14-10.118.1

kernel-rt_debug-debugsource: before 4.12.14-10.118.1

kernel-syms-rt: before 4.12.14-10.118.1

gfs2-kmp-rt-debuginfo: before 4.12.14-10.118.1

dlm-kmp-rt: before 4.12.14-10.118.1

kernel-rt-base: before 4.12.14-10.118.1

kernel-rt-devel: before 4.12.14-10.118.1

cluster-md-kmp-rt: before 4.12.14-10.118.1

gfs2-kmp-rt: before 4.12.14-10.118.1

cluster-md-kmp-rt-debuginfo: before 4.12.14-10.118.1

kernel-rt-debuginfo: before 4.12.14-10.118.1

kernel-rt-base-debuginfo: before 4.12.14-10.118.1

kernel-rt_debug-debuginfo: before 4.12.14-10.118.1

ocfs2-kmp-rt: before 4.12.14-10.118.1

kernel-rt_debug-devel-debuginfo: before 4.12.14-10.118.1

External links

http://www.suse.com/support/update/announcement/2023/suse-su-20230747-1/

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) NULL pointer dereference

EUVDB-ID: #VU70486

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-2022-4129

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 Layer 2 Tunneling Protocol (L2TP). A missing lock when clearing sk_user_data can lead to a race condition and NULL pointer dereference. A local user could use this flaw to potentially crash the system causing a denial of service.

Mitigation

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

Vulnerable software versions

SUSE Linux Enterprise Real Time 12: SP5

SUSE Linux Enterprise Server 12: SP5

SUSE Linux Enterprise High Performance Computing 12: SP5

kernel-rt_debug: before 4.12.14-10.118.1

kernel-rt: before 4.12.14-10.118.1

kernel-source-rt: before 4.12.14-10.118.1

kernel-devel-rt: before 4.12.14-10.118.1

dlm-kmp-rt-debuginfo: before 4.12.14-10.118.1

kernel-rt-devel-debuginfo: before 4.12.14-10.118.1

kernel-rt-debugsource: before 4.12.14-10.118.1

ocfs2-kmp-rt-debuginfo: before 4.12.14-10.118.1

kernel-rt_debug-devel: before 4.12.14-10.118.1

kernel-rt_debug-debugsource: before 4.12.14-10.118.1

kernel-syms-rt: before 4.12.14-10.118.1

gfs2-kmp-rt-debuginfo: before 4.12.14-10.118.1

dlm-kmp-rt: before 4.12.14-10.118.1

kernel-rt-base: before 4.12.14-10.118.1

kernel-rt-devel: before 4.12.14-10.118.1

cluster-md-kmp-rt: before 4.12.14-10.118.1

gfs2-kmp-rt: before 4.12.14-10.118.1

cluster-md-kmp-rt-debuginfo: before 4.12.14-10.118.1

kernel-rt-debuginfo: before 4.12.14-10.118.1

kernel-rt-base-debuginfo: before 4.12.14-10.118.1

kernel-rt_debug-debuginfo: before 4.12.14-10.118.1

ocfs2-kmp-rt: before 4.12.14-10.118.1

kernel-rt_debug-devel-debuginfo: before 4.12.14-10.118.1

External links

http://www.suse.com/support/update/announcement/2023/suse-su-20230747-1/

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) Memory leak

EUVDB-ID: #VU73765

Risk: Low

CVSSv3.1: 5.7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-0597

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

Exploit availability: No

Description

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

The vulnerability exists due to memory leak within the Linux kernel cpu_entry_area mapping of X86 CPU data. A local user can gain access to sensitive information.

Mitigation

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

Vulnerable software versions

SUSE Linux Enterprise Real Time 12: SP5

SUSE Linux Enterprise Server 12: SP5

SUSE Linux Enterprise High Performance Computing 12: SP5

kernel-rt_debug: before 4.12.14-10.118.1

kernel-rt: before 4.12.14-10.118.1

kernel-source-rt: before 4.12.14-10.118.1

kernel-devel-rt: before 4.12.14-10.118.1

dlm-kmp-rt-debuginfo: before 4.12.14-10.118.1

kernel-rt-devel-debuginfo: before 4.12.14-10.118.1

kernel-rt-debugsource: before 4.12.14-10.118.1

ocfs2-kmp-rt-debuginfo: before 4.12.14-10.118.1

kernel-rt_debug-devel: before 4.12.14-10.118.1

kernel-rt_debug-debugsource: before 4.12.14-10.118.1

kernel-syms-rt: before 4.12.14-10.118.1

gfs2-kmp-rt-debuginfo: before 4.12.14-10.118.1

dlm-kmp-rt: before 4.12.14-10.118.1

kernel-rt-base: before 4.12.14-10.118.1

kernel-rt-devel: before 4.12.14-10.118.1

cluster-md-kmp-rt: before 4.12.14-10.118.1

gfs2-kmp-rt: before 4.12.14-10.118.1

cluster-md-kmp-rt-debuginfo: before 4.12.14-10.118.1

kernel-rt-debuginfo: before 4.12.14-10.118.1

kernel-rt-base-debuginfo: before 4.12.14-10.118.1

kernel-rt_debug-debuginfo: before 4.12.14-10.118.1

ocfs2-kmp-rt: before 4.12.14-10.118.1

kernel-rt_debug-devel-debuginfo: before 4.12.14-10.118.1

External links

http://www.suse.com/support/update/announcement/2023/suse-su-20230747-1/

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) Use-after-free

EUVDB-ID: #VU72734

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-2023-1118

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 the Linux kernel integrated infrared receiver/transceiver driver "drivers/media/rc/ene_ir.c" when detaching rc device. A local user can trigger a use-after-free error and execute arbitrary code with elevated privileges.

Mitigation

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

Vulnerable software versions

SUSE Linux Enterprise Real Time 12: SP5

SUSE Linux Enterprise Server 12: SP5

SUSE Linux Enterprise High Performance Computing 12: SP5

kernel-rt_debug: before 4.12.14-10.118.1

kernel-rt: before 4.12.14-10.118.1

kernel-source-rt: before 4.12.14-10.118.1

kernel-devel-rt: before 4.12.14-10.118.1

dlm-kmp-rt-debuginfo: before 4.12.14-10.118.1

kernel-rt-devel-debuginfo: before 4.12.14-10.118.1

kernel-rt-debugsource: before 4.12.14-10.118.1

ocfs2-kmp-rt-debuginfo: before 4.12.14-10.118.1

kernel-rt_debug-devel: before 4.12.14-10.118.1

kernel-rt_debug-debugsource: before 4.12.14-10.118.1

kernel-syms-rt: before 4.12.14-10.118.1

gfs2-kmp-rt-debuginfo: before 4.12.14-10.118.1

dlm-kmp-rt: before 4.12.14-10.118.1

kernel-rt-base: before 4.12.14-10.118.1

kernel-rt-devel: before 4.12.14-10.118.1

cluster-md-kmp-rt: before 4.12.14-10.118.1

gfs2-kmp-rt: before 4.12.14-10.118.1

cluster-md-kmp-rt-debuginfo: before 4.12.14-10.118.1

kernel-rt-debuginfo: before 4.12.14-10.118.1

kernel-rt-base-debuginfo: before 4.12.14-10.118.1

kernel-rt_debug-debuginfo: before 4.12.14-10.118.1

ocfs2-kmp-rt: before 4.12.14-10.118.1

kernel-rt_debug-devel-debuginfo: before 4.12.14-10.118.1

External links

http://www.suse.com/support/update/announcement/2023/suse-su-20230747-1/

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) Integer overflow

EUVDB-ID: #VU72468

Risk: Low

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

CVE-ID: CVE-2023-23559

CWE-ID: CWE-190 - Integer overflow

Exploit availability: No

Description

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

The vulnerability exists due to integer overflow within the rndis_query_oid() function in drivers/net/wireless/rndis_wlan.c. A local user can trigger an integer overflow and execute arbitrary code with elevated privileges.

Mitigation

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

Vulnerable software versions

SUSE Linux Enterprise Real Time 12: SP5

SUSE Linux Enterprise Server 12: SP5

SUSE Linux Enterprise High Performance Computing 12: SP5

kernel-rt_debug: before 4.12.14-10.118.1

kernel-rt: before 4.12.14-10.118.1

kernel-source-rt: before 4.12.14-10.118.1

kernel-devel-rt: before 4.12.14-10.118.1

dlm-kmp-rt-debuginfo: before 4.12.14-10.118.1

kernel-rt-devel-debuginfo: before 4.12.14-10.118.1

kernel-rt-debugsource: before 4.12.14-10.118.1

ocfs2-kmp-rt-debuginfo: before 4.12.14-10.118.1

kernel-rt_debug-devel: before 4.12.14-10.118.1

kernel-rt_debug-debugsource: before 4.12.14-10.118.1

kernel-syms-rt: before 4.12.14-10.118.1

gfs2-kmp-rt-debuginfo: before 4.12.14-10.118.1

dlm-kmp-rt: before 4.12.14-10.118.1

kernel-rt-base: before 4.12.14-10.118.1

kernel-rt-devel: before 4.12.14-10.118.1

cluster-md-kmp-rt: before 4.12.14-10.118.1

gfs2-kmp-rt: before 4.12.14-10.118.1

cluster-md-kmp-rt-debuginfo: before 4.12.14-10.118.1

kernel-rt-debuginfo: before 4.12.14-10.118.1

kernel-rt-base-debuginfo: before 4.12.14-10.118.1

kernel-rt_debug-debuginfo: before 4.12.14-10.118.1

ocfs2-kmp-rt: before 4.12.14-10.118.1

kernel-rt_debug-devel-debuginfo: before 4.12.14-10.118.1

External links

http://www.suse.com/support/update/announcement/2023/suse-su-20230747-1/

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.

7) Double Free

EUVDB-ID: #VU73766

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-2023-26545

CWE-ID: CWE-415 - Double Free

Exploit availability: No

Description

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

The vulnerability exists due to a double free in net/mpls/af_mpls.c during the renaming of a device. A local user can trigger a double free error and execute arbitrary code with elevated privileges.

Mitigation

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

Vulnerable software versions

SUSE Linux Enterprise Real Time 12: SP5

SUSE Linux Enterprise Server 12: SP5

SUSE Linux Enterprise High Performance Computing 12: SP5

kernel-rt_debug: before 4.12.14-10.118.1

kernel-rt: before 4.12.14-10.118.1

kernel-source-rt: before 4.12.14-10.118.1

kernel-devel-rt: before 4.12.14-10.118.1

dlm-kmp-rt-debuginfo: before 4.12.14-10.118.1

kernel-rt-devel-debuginfo: before 4.12.14-10.118.1

kernel-rt-debugsource: before 4.12.14-10.118.1

ocfs2-kmp-rt-debuginfo: before 4.12.14-10.118.1

kernel-rt_debug-devel: before 4.12.14-10.118.1

kernel-rt_debug-debugsource: before 4.12.14-10.118.1

kernel-syms-rt: before 4.12.14-10.118.1

gfs2-kmp-rt-debuginfo: before 4.12.14-10.118.1

dlm-kmp-rt: before 4.12.14-10.118.1

kernel-rt-base: before 4.12.14-10.118.1

kernel-rt-devel: before 4.12.14-10.118.1

cluster-md-kmp-rt: before 4.12.14-10.118.1

gfs2-kmp-rt: before 4.12.14-10.118.1

cluster-md-kmp-rt-debuginfo: before 4.12.14-10.118.1

kernel-rt-debuginfo: before 4.12.14-10.118.1

kernel-rt-base-debuginfo: before 4.12.14-10.118.1

kernel-rt_debug-debuginfo: before 4.12.14-10.118.1

ocfs2-kmp-rt: before 4.12.14-10.118.1

kernel-rt_debug-devel-debuginfo: before 4.12.14-10.118.1

External links

http://www.suse.com/support/update/announcement/2023/suse-su-20230747-1/

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.