SUSE update for the Linux Kernel (Live Patch 44 for SLE 15 SP3)

Published: 2024-08-28

Risk	Medium
Patch available	YES
Number of vulnerabilities	8
CVE-ID	CVE-2021-47378 CVE-2021-47383 CVE-2021-47402 CVE-2023-1829 CVE-2024-26828 CVE-2024-26923 CVE-2024-27398 CVE-2024-35950
CWE-ID	CWE-416 CWE-125 CWE-191 CWE-667
Exploitation vector	Local network
Public exploit	Public exploit code for vulnerability #4 is available.
Vulnerable software Subscribe	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 SUSE Linux Enterprise Micro Operating systems & Components / Operating system openSUSE Leap Operating systems & Components / Operating system kernel-livepatch-5_3_18-150300_59_161-preempt Operating systems & Components / Operating system package or component kernel-livepatch-5_3_18-150300_59_161-preempt-debuginfo Operating systems & Components / Operating system package or component kernel-livepatch-5_3_18-150300_59_161-default-debuginfo Operating systems & Components / Operating system package or component kernel-livepatch-5_3_18-150300_59_161-default Operating systems & Components / Operating system package or component kernel-livepatch-SLE15-SP3_Update_44-debugsource Operating systems & Components / Operating system package or component kernel-livepatch-SLE15-SP2_Update_48-debugsource Operating systems & Components / Operating system package or component kernel-livepatch-5_3_18-150200_24_191-default Operating systems & Components / Operating system package or component kernel-livepatch-5_3_18-150200_24_191-default-debuginfo Operating systems & Components / Operating system package or component
Vendor	SUSE

Security Bulletin

This security bulletin contains information about 8 vulnerabilities.

1) Use-after-free

EUVDB-ID: #VU91058

Risk: Low

CVSSv3.1: 7.7 [AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-47378

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 the nvme_rdma_free_queue(), nvme_rdma_conn_established(), nvme_rdma_route_resolved() and nvme_rdma_cm_handler() functions in drivers/nvme/host/rdma.c. A local user can escalate privileges on the system.

Mitigation

Update the affected package the Linux Kernel (Live Patch 44 for SLE 15 SP3) to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Live Patching: 15-SP2 - 15-SP3

SUSE Linux Enterprise Server for SAP Applications 15: SP2 - SP3

SUSE Linux Enterprise Server 15: SP2 - SP3

SUSE Linux Enterprise High Performance Computing 15: SP2 - SP3

SUSE Linux Enterprise Micro: 5.1 - 5.2

openSUSE Leap: 15.3

kernel-livepatch-5_3_18-150300_59_161-preempt: before 5-150300.7.6.1

kernel-livepatch-5_3_18-150300_59_161-preempt-debuginfo: before 5-150300.7.6.1

kernel-livepatch-5_3_18-150300_59_161-default-debuginfo: before 5-150300.7.6.1

kernel-livepatch-5_3_18-150300_59_161-default: before 5-150300.7.6.1

kernel-livepatch-SLE15-SP3_Update_44-debugsource: before 5-150300.7.6.1

kernel-livepatch-SLE15-SP2_Update_48-debugsource: before 5-150200.5.6.1

kernel-livepatch-5_3_18-150200_24_191-default: before 5-150200.5.6.1

kernel-livepatch-5_3_18-150200_24_191-default-debuginfo: before 5-150200.5.6.1

External links

http://www.suse.com/support/update/announcement/2024/suse-su-20243039-1/

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) Out-of-bounds read

EUVDB-ID: #VU91390

Risk: Low

CVSSv3.1: 4.8 [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-2021-47383

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

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

The vulnerability exists due to an out-of-bounds read error within the vc_do_resize() function in drivers/tty/vt/vt.c. A local user can perform a denial of service (DoS) attack.