SUSE update for the Linux Kernel RT (Live Patch 3 for SLE 15 SP4)

Published: 2024-02-05 | Updated: 2024-02-27

Risk	Low
Patch available	YES
Number of vulnerabilities	3
CVE-ID	CVE-2023-5178 CVE-2023-6176 CVE-2023-6932
CWE-ID	CWE-416 CWE-476
Exploitation vector	Local
Public exploit	Public exploit code for vulnerability #1 is available.
Vulnerable software	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 Operating systems & Components / Operating system kernel-livepatch-5_14_21-150500_13_21-rt Operating systems & Components / Operating system package or component kernel-livepatch-5_14_21-150500_13_5-rt-debuginfo Operating systems & Components / Operating system package or component kernel-livepatch-5_14_21-150500_13_21-rt-debuginfo Operating systems & Components / Operating system package or component kernel-livepatch-SLE15-SP5-RT_Update_3-debugsource Operating systems & Components / Operating system package or component kernel-livepatch-5_14_21-150500_13_11-rt Operating systems & Components / Operating system package or component kernel-livepatch-5_14_21-150500_11-rt-debuginfo Operating systems & Components / Operating system package or component kernel-livepatch-5_14_21-150500_13_5-rt Operating systems & Components / Operating system package or component kernel-livepatch-5_14_21-150500_11-rt Operating systems & Components / Operating system package or component kernel-livepatch-SLE15-SP5-RT_Update_6-debugsource Operating systems & Components / Operating system package or component kernel-livepatch-5_14_21-150500_13_11-rt-debuginfo Operating systems & Components / Operating system package or component kernel-livepatch-SLE15-SP5-RT_Update_0-debugsource Operating systems & Components / Operating system package or component kernel-livepatch-SLE15-SP5-RT_Update_1-debugsource Operating systems & Components / Operating system package or component kernel-livepatch-SLE15-SP4-RT_Update_14-debugsource Operating systems & Components / Operating system package or component kernel-livepatch-SLE15-SP4-RT_Update_7-debugsource Operating systems & Components / Operating system package or component kernel-livepatch-5_14_21-150400_15_53-rt-debuginfo Operating systems & Components / Operating system package or component kernel-livepatch-5_14_21-150400_15_40-rt-debuginfo Operating systems & Components / Operating system package or component kernel-livepatch-5_14_21-150400_15_53-rt Operating systems & Components / Operating system package or component kernel-livepatch-5_14_21-150400_15_11-rt-debuginfo Operating systems & Components / Operating system package or component kernel-livepatch-SLE15-SP4-RT_Update_2-debugsource Operating systems & Components / Operating system package or component kernel-livepatch-5_14_21-150400_15_18-rt-debuginfo Operating systems & Components / Operating system package or component kernel-livepatch-5_14_21-150400_15_23-rt Operating systems & Components / Operating system package or component kernel-livepatch-5_14_21-150400_15_37-rt Operating systems & Components / Operating system package or component kernel-livepatch-5_14_21-150400_15_8-rt-debuginfo Operating systems & Components / Operating system package or component kernel-livepatch-5_14_21-150400_15_46-rt-debuginfo Operating systems & Components / Operating system package or component kernel-livepatch-5_14_21-150400_15_37-rt-debuginfo Operating systems & Components / Operating system package or component kernel-livepatch-SLE15-SP4-RT_Update_8-debugsource Operating systems & Components / Operating system package or component kernel-livepatch-5_14_21-150400_15_18-rt Operating systems & Components / Operating system package or component kernel-livepatch-5_14_21-150400_15_28-rt Operating systems & Components / Operating system package or component kernel-livepatch-SLE15-SP4-RT_Update_13-debugsource Operating systems & Components / Operating system package or component kernel-livepatch-5_14_21-150400_15_23-rt-debuginfo Operating systems & Components / Operating system package or component kernel-livepatch-SLE15-SP4-RT_Update_9-debugsource 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_40-rt Operating systems & Components / Operating system package or component kernel-livepatch-5_14_21-150400_15_56-rt-debuginfo Operating systems & Components / Operating system package or component kernel-livepatch-5_14_21-150400_15_46-rt 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-livepatch-5_14_21-150400_15_56-rt Operating systems & Components / Operating system package or component kernel-livepatch-SLE15-SP4-RT_Update_11-debugsource Operating systems & Components / Operating system package or component kernel-livepatch-SLE15-SP4-RT_Update_6-debugsource Operating systems & Components / Operating system package or component kernel-livepatch-5_14_21-150400_15_8-rt Operating systems & Components / Operating system package or component kernel-livepatch-SLE15-SP4-RT_Update_5-debugsource Operating systems & Components / Operating system package or component
Vendor	SUSE

Security Bulletin

This security bulletin contains information about 3 vulnerabilities.

1) Use-after-free

EUVDB-ID: #VU82658

Risk: Low

CVSSv4.0: 7.1 [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:P/U:Clear]

CVE-ID: CVE-2023-5178

CWE-ID: CWE-416 - Use After Free

Exploit availability: Yes

Description

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

The vulnerability exists due to a use-after-free error within the drivers/nvme/target/tcp.c in nvmet_tcp_free_crypto due to a logical bug in the NVMe-oF/TCP subsystem in the Linux kernel. A local authenticated user can trigger a use-after-free error and escalate privileges on the system.

Mitigation

Update the affected package the Linux Kernel RT (Live Patch 3 for SLE 15 SP4) to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Micro: 5.3 - 5.5

SUSE Linux Enterprise Live Patching: 15-SP4 - 15-SP5

SUSE Linux Enterprise Server for SAP Applications 15: SP4 - SP5

SUSE Linux Enterprise Server 15: SP4 - SP5

SUSE Linux Enterprise Real Time 15: SP4 - SP5

SUSE Linux Enterprise High Performance Computing 15: SP4 - SP5

openSUSE Leap: 15.5

kernel-livepatch-5_14_21-150500_13_21-rt: before 3-150500.2.1

kernel-livepatch-5_14_21-150500_13_5-rt-debuginfo: before 6-150500.2.1

kernel-livepatch-5_14_21-150500_13_21-rt-debuginfo: before 3-150500.2.1

kernel-livepatch-SLE15-SP5-RT_Update_3-debugsource: before 5-150500.2.1

kernel-livepatch-5_14_21-150500_13_11-rt: before 5-150500.2.1

kernel-livepatch-5_14_21-150500_11-rt-debuginfo: before 7-150500.3.1

kernel-livepatch-5_14_21-150500_13_5-rt: before 6-150500.2.1

kernel-livepatch-5_14_21-150500_11-rt: before 7-150500.3.1

kernel-livepatch-SLE15-SP5-RT_Update_6-debugsource: before 3-150500.2.1

kernel-livepatch-5_14_21-150500_13_11-rt-debuginfo: before 5-150500.2.1

kernel-livepatch-SLE15-SP5-RT_Update_0-debugsource: before 7-150500.3.1

kernel-livepatch-SLE15-SP5-RT_Update_1-debugsource: before 6-150500.2.1

kernel-livepatch-SLE15-SP4-RT_Update_14-debugsource: before 3-150400.2.1

kernel-livepatch-SLE15-SP4-RT_Update_7-debugsource: before 9-150400.2.1

kernel-livepatch-5_14_21-150400_15_53-rt-debuginfo: before 4-150400.2.1

kernel-livepatch-5_14_21-150400_15_40-rt-debuginfo: before 6-150400.2.1

kernel-livepatch-5_14_21-150400_15_53-rt: before 4-150400.2.1

kernel-livepatch-5_14_21-150400_15_11-rt-debuginfo: before 11-150400.2.2

kernel-livepatch-SLE15-SP4-RT_Update_2-debugsource: before 12-150400.2.2

kernel-livepatch-5_14_21-150400_15_18-rt-debuginfo: before 10-150400.2.1

kernel-livepatch-5_14_21-150400_15_23-rt: before 9-150400.2.1

kernel-livepatch-5_14_21-150400_15_37-rt: before 6-150400.2.1

kernel-livepatch-5_14_21-150400_15_8-rt-debuginfo: before 12-150400.2.2

kernel-livepatch-5_14_21-150400_15_46-rt-debuginfo: before 5-150400.2.1

kernel-livepatch-5_14_21-150400_15_37-rt-debuginfo: before 6-150400.2.1

kernel-livepatch-SLE15-SP4-RT_Update_8-debugsource: before 6-150400.2.1

kernel-livepatch-5_14_21-150400_15_18-rt: before 10-150400.2.1

kernel-livepatch-5_14_21-150400_15_28-rt: before 9-150400.2.1

kernel-livepatch-SLE15-SP4-RT_Update_13-debugsource: before 4-150400.2.1

kernel-livepatch-5_14_21-150400_15_23-rt-debuginfo: before 9-150400.2.1

kernel-livepatch-SLE15-SP4-RT_Update_9-debugsource: before 6-150400.2.1

kernel-livepatch-SLE15-SP4-RT_Update_3-debugsource: before 11-150400.2.2

kernel-livepatch-5_14_21-150400_15_40-rt: before 6-150400.2.1

kernel-livepatch-5_14_21-150400_15_56-rt-debuginfo: before 3-150400.2.1

kernel-livepatch-5_14_21-150400_15_46-rt: before 5-150400.2.1

kernel-livepatch-5_14_21-150400_15_11-rt: before 11-150400.2.2

kernel-livepatch-5_14_21-150400_15_56-rt: before 3-150400.2.1

kernel-livepatch-SLE15-SP4-RT_Update_11-debugsource: before 5-150400.2.1

kernel-livepatch-SLE15-SP4-RT_Update_6-debugsource: before 9-150400.2.1

kernel-livepatch-5_14_21-150400_15_8-rt: before 12-150400.2.2

kernel-livepatch-SLE15-SP4-RT_Update_5-debugsource: before 10-150400.2.1

CPE2.3

External links

https://www.suse.com/support/update/announcement/2024/suse-su-20240331-1/

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.

2) NULL pointer dereference

EUVDB-ID: #VU84096

Risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-6176

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 API for the cryptographic algorithm scatterwalk functionality in scatterwalk_copychunks(). A local user can send a malicious packet with specific socket configuration and crash the OS kernel.