SUSE update for the Linux Kernel (Live Patch 3 for SLE 15 SP5)

1) Stack-based buffer overflow

EUVDB-ID: #VU79487

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-2023-4273

CWE-ID: CWE-121 - Stack-based buffer overflow

Exploit availability: No

Description

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

The vulnerability exists due to a boundary error in the implementation of the file name reconstruction function in the exFAT driver in Linux kernel. A local user can trigger a stack overflow and execute arbitrary code with elevated privileges.

Mitigation

Update the affected package the Linux Kernel (Live Patch 3 for SLE 15 SP5) 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: 15.4 - 15.5

kernel-livepatch-SLE15-SP5_Update_3-debugsource: before 2-150500.2.1

kernel-livepatch-5_14_21-150500_55_19-default-debuginfo: before 2-150500.2.1

kernel-livepatch-5_14_21-150500_55_19-default: before 2-150500.2.1

kernel-livepatch-5_14_21-150400_24_81-default: before 2-150400.2.1

kernel-livepatch-5_14_21-150400_24_81-default-debuginfo: before 2-150400.2.1

kernel-livepatch-SLE15-SP4_Update_16-debugsource: before 2-150400.2.1

CPE2.3

• cpe:2.3:o:suse:suse_linux_enterprise_micro:5.3:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_micro:5.4:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_micro:5.5:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_live_patching:15-SP4:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_live_patching:15-SP5:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_server_for_sap_applications_15:SP4:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_server_for_sap_applications_15:SP5:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_server_15:SP4:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_server_15:SP5:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_real_time_15:SP4:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_high_performance_computing_15:SP4:*:*:*:*:*:*:*
• cpe:2.3:o:suse:opensuse_leap:15.4:*:*:*:*:*:*:*
• cpe:2.3:o:suse:kernel-livepatch-sle15-sp5_update_3-debugsource:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:o:suse:kernel-livepatch-5_14_21-150500_55_19-default-debuginfo:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:o:suse:kernel-livepatch-5_14_21-150500_55_19-default:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:o:suse:kernel-livepatch-5_14_21-150400_24_81-default:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:o:suse:kernel-livepatch-5_14_21-150400_24_81-default-debuginfo:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:o:suse:kernel-livepatch-sle15-sp4_update_16-debugsource:*:*:*:*:*:suse_linux:*:*

External links

http://www.suse.com/support/update/announcement/2023/suse-su-20233929-1/

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.