SUSE update for the Linux Kernel (Live Patch 23 for SLE 15 SP4)

Published: 2024-04-24

Risk	Medium
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2023-52340 CVE-2024-26622
CWE-ID	CWE-400 CWE-416
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	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_108-default Operating systems & Components / Operating system package or component kernel-livepatch-SLE15-SP4_Update_23-debugsource Operating systems & Components / Operating system package or component kernel-livepatch-5_14_21-150400_24_108-default-debuginfo Operating systems & Components / Operating system package or component
Vendor	SUSE

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Resource exhaustion

EUVDB-ID: #VU88378

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-2023-52340

CWE-ID: CWE-400 - Resource exhaustion

Exploit availability: No

Description

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

The vulnerability exists due to an error when processing very large ICMPv6 packets. A remote attacker can send a flood of IPv6 ICMP6 PTB messages, cause the high lock contention and increased CPU usage, leading to a denial of service.

Successful vulnerability exploitation requires a attacker to be on the local network or have a high bandwidth connection.

Mitigation

Update the affected package the Linux Kernel (Live Patch 23 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_108-default: before 3-150400.9.8.1

kernel-livepatch-SLE15-SP4_Update_23-debugsource: before 3-150400.9.8.1

kernel-livepatch-5_14_21-150400_24_108-default-debuginfo: before 3-150400.9.8.1

External links

http://www.suse.com/support/update/announcement/2024/suse-su-20241411-1/

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.

2) Use-after-free

EUVDB-ID: #VU87193

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-2024-26622

CWE-ID: CWE-416 - Use After Free