SUSE update for the Linux Kernel (Live Patch 32 for SLE 12 SP4)

Published: 2023-04-25

Risk	Low
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2023-0590 CVE-2023-1118
CWE-ID	CWE-416
Exploitation vector	Local
Public exploit	N/A
Vulnerable software Subscribe	SUSE Linux Enterprise Live Patching Operating systems & Components / Operating system SUSE Linux Enterprise Server for SAP Applications 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 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-4_12_14-150100_197_126-default Operating systems & Components / Operating system package or component kernel-livepatch-4_12_14-150100_197_134-default Operating systems & Components / Operating system package or component kgraft-patch-4_12_14-122_133-default Operating systems & Components / Operating system package or component kgraft-patch-4_12_14-122_139-default Operating systems & Components / Operating system package or component kgraft-patch-4_12_14-95_114-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: #VU72098

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-2023-0590

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to a use-after-free error within the qdisc_graft() function in net/sched/sch_api.c. A local user can trigger a use-after-free error and crash the kernel.

Mitigation

Update the affected package the Linux Kernel (Live Patch 32 for SLE 12 SP4) to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Live Patching: 12-SP4 - 15-SP1

SUSE Linux Enterprise Server for SAP Applications 12: SP4 - SP5

SUSE Linux Enterprise Server 12: SP4 - SP5

SUSE Linux Enterprise High Performance Computing 12: SP4 - SP5

SUSE Linux Enterprise Server for SAP Applications 15: SP1

SUSE Linux Enterprise Server 15: SP1

SUSE Linux Enterprise High Performance Computing 15: SP1

kernel-livepatch-4_12_14-150100_197_126-default: before 6-150100.2.2

kernel-livepatch-4_12_14-150100_197_134-default: before 3-150100.2.2

kgraft-patch-4_12_14-122_133-default: before 7-2.2

kgraft-patch-4_12_14-122_139-default: before 5-2.2

kgraft-patch-4_12_14-95_114-default: before 4-2.2

CPE2.3

External links

http://www.suse.com/support/update/announcement/2023/suse-su-20231982-1/

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: #VU72734