SUSE update for the Linux Kernel (Live Patch 34 for SLE 15 SP2)

Published: 2023-10-31

Risk	Low
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2023-3390 CVE-2023-4623
CWE-ID	CWE-416
Exploitation vector	Local
Public exploit	N/A
Vulnerable software	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 High Performance Computing 15 Operating systems & Components / Operating system kernel-livepatch-5_3_18-150200_24_145-default-debuginfo Operating systems & Components / Operating system package or component kernel-livepatch-SLE15-SP2_Update_34-debugsource Operating systems & Components / Operating system package or component kernel-livepatch-5_3_18-150200_24_145-default Operating systems & Components / Operating system package or component
Vendor	SUSE

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Use-after-free

EUVDB-ID: #VU78007

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-2023-3390

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 net/netfilter/nf_tables_api.c in the Linux kernel netfilter subsystem. A local user can trigger a use-after-fee error and escalate privileges on the system.

Mitigation

Update the affected package the Linux Kernel (Live Patch 34 for SLE 15 SP2) to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Live Patching: 15-SP2

SUSE Linux Enterprise Server for SAP Applications 15: SP2

SUSE Linux Enterprise Server 15: SP2

SUSE Linux Enterprise High Performance Computing 15: SP2

kernel-livepatch-5_3_18-150200_24_145-default-debuginfo: before 8-150200.2.1

kernel-livepatch-SLE15-SP2_Update_34-debugsource: before 8-150200.2.1

kernel-livepatch-5_3_18-150200_24_145-default: before 8-150200.2.1

CPE2.3

External links

https://www.suse.com/support/update/announcement/2023/suse-su-20234279-1/

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) Use-after-free

EUVDB-ID: #VU81664