SUSE update for the Linux Kernel (Live Patch 18 for SLE 15 SP4)

Published: 2024-04-01 | Updated: 2024-05-13

Risk	Low
Patch available	YES
Number of vulnerabilities	3
CVE-ID	CVE-2023-46813 CVE-2023-51779 CVE-2023-6531
CWE-ID	CWE-284 CWE-416 CWE-362
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_21-150400_24_55-default-debuginfo Operating systems & Components / Operating system package or component kernel-livepatch-SLE15-SP4_Update_15-debugsource Operating systems & Components / Operating system package or component kernel-livepatch-5_14_21-150400_24_88-default-debuginfo Operating systems & Components / Operating system package or component kernel-livepatch-5_14_21-150400_24_66-default Operating systems & Components / Operating system package or component kernel-livepatch-5_14_21-150400_24_63-default Operating systems & Components / Operating system package or component kernel-livepatch-5_14_21-150400_24_92-default-debuginfo Operating systems & Components / Operating system package or component kernel-livepatch-5_14_21-150400_24_69-default-debuginfo Operating systems & Components / Operating system package or component kernel-livepatch-SLE15-SP4_Update_19-debugsource Operating systems & Components / Operating system package or component kernel-livepatch-5_14_21-150400_24_81-default-debuginfo Operating systems & Components / Operating system package or component kernel-livepatch-SLE15-SP4_Update_14-debugsource Operating systems & Components / Operating system package or component kernel-livepatch-5_14_21-150400_24_66-default-debuginfo Operating systems & Components / Operating system package or component kernel-livepatch-5_14_21-150400_24_55-default Operating systems & Components / Operating system package or component kernel-livepatch-5_14_21-150400_24_74-default-debuginfo Operating systems & Components / Operating system package or component kernel-livepatch-5_14_21-150400_24_60-default-debuginfo Operating systems & Components / Operating system package or component kernel-livepatch-SLE15-SP4_Update_11-debugsource Operating systems & Components / Operating system package or component kernel-livepatch-5_14_21-150400_24_92-default Operating systems & Components / Operating system package or component kernel-livepatch-SLE15-SP4_Update_13-debugsource Operating systems & Components / Operating system package or component kernel-livepatch-SLE15-SP4_Update_12-debugsource Operating systems & Components / Operating system package or component kernel-livepatch-5_14_21-150400_24_69-default Operating systems & Components / Operating system package or component kernel-livepatch-SLE15-SP4_Update_16-debugsource Operating systems & Components / Operating system package or component kernel-livepatch-5_14_21-150400_24_88-default Operating systems & Components / Operating system package or component kernel-livepatch-5_14_21-150400_24_81-default Operating systems & Components / Operating system package or component kernel-livepatch-5_14_21-150400_24_63-default-debuginfo Operating systems & Components / Operating system package or component kernel-livepatch-5_14_21-150400_24_60-default Operating systems & Components / Operating system package or component kernel-livepatch-SLE15-SP4_Update_18-debugsource Operating systems & Components / Operating system package or component kernel-livepatch-5_14_21-150400_24_74-default Operating systems & Components / Operating system package or component kernel-livepatch-SLE15-SP4_Update_10-debugsource Operating systems & Components / Operating system package or component
Vendor	SUSE

Security Bulletin

This security bulletin contains information about 3 vulnerabilities.

1) Improper access control

EUVDB-ID: #VU82764

Risk: Low

CVSSv4.0: 7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:P/U:Clear]

CVE-ID: CVE-2023-46813

CWE-ID: CWE-284 - Improper Access Control

Exploit availability: Yes

Description

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

The vulnerability exists due to improper access checking in the #VC handler and instruction emulation of the SEV-ES emulation of MMIO accesses. A local user can gain arbitrary write access to kernel memory and execute arbitrary code with elevated privileges.

Mitigation

Update the affected package the Linux Kernel (Live Patch 18 for SLE 15 SP4) to the latest version.

Vulnerable software versions

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: 15.4

kernel-livepatch-5_14_21-150400_24_55-default-debuginfo: before 12-150400.2.3

kernel-livepatch-SLE15-SP4_Update_15-debugsource: before 8-150400.2.3

kernel-livepatch-5_14_21-150400_24_88-default-debuginfo: before 6-150400.2.2

kernel-livepatch-5_14_21-150400_24_66-default: before 9-150400.2.3

kernel-livepatch-5_14_21-150400_24_63-default: before 11-150400.2.3

kernel-livepatch-5_14_21-150400_24_92-default-debuginfo: before 5-150400.2.3

kernel-livepatch-5_14_21-150400_24_69-default-debuginfo: before 8-150400.2.3

kernel-livepatch-SLE15-SP4_Update_19-debugsource: before 5-150400.2.3

kernel-livepatch-5_14_21-150400_24_81-default-debuginfo: before 7-150400.2.3

kernel-livepatch-SLE15-SP4_Update_14-debugsource: before 8-150400.2.3

kernel-livepatch-5_14_21-150400_24_66-default-debuginfo: before 9-150400.2.3

kernel-livepatch-5_14_21-150400_24_55-default: before 12-150400.2.3

kernel-livepatch-5_14_21-150400_24_74-default-debuginfo: before 8-150400.2.3

kernel-livepatch-5_14_21-150400_24_60-default-debuginfo: before 11-150400.2.3

kernel-livepatch-SLE15-SP4_Update_11-debugsource: before 11-150400.2.3

kernel-livepatch-5_14_21-150400_24_92-default: before 5-150400.2.3

kernel-livepatch-SLE15-SP4_Update_13-debugsource: before 9-150400.2.3

kernel-livepatch-SLE15-SP4_Update_12-debugsource: before 11-150400.2.3

kernel-livepatch-5_14_21-150400_24_69-default: before 8-150400.2.3

kernel-livepatch-SLE15-SP4_Update_16-debugsource: before 7-150400.2.3

kernel-livepatch-5_14_21-150400_24_88-default: before 6-150400.2.2

kernel-livepatch-5_14_21-150400_24_81-default: before 7-150400.2.3

kernel-livepatch-5_14_21-150400_24_63-default-debuginfo: before 11-150400.2.3

kernel-livepatch-5_14_21-150400_24_60-default: before 11-150400.2.3

kernel-livepatch-SLE15-SP4_Update_18-debugsource: before 6-150400.2.2

kernel-livepatch-5_14_21-150400_24_74-default: before 8-150400.2.3

kernel-livepatch-SLE15-SP4_Update_10-debugsource: before 12-150400.2.3

CPE2.3

External links

https://www.suse.com/support/update/announcement/2024/suse-su-20241063-1/

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) Use-after-free

EUVDB-ID: #VU85023

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-2023-51779

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 when handling bt_sock_ioctl in the Bluetooth subsystem. A local user can trigger a use-after-free error and execute arbitrary code on the system.