SUSE update for the Linux Kernel (Live Patch 31 for SLE 12 SP4)
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 3 |
| CVE-ID | CVE-2023-1390 CVE-2023-23455 CVE-2023-31436 |
| CWE-ID | CWE-835 CWE-843 CWE-787 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
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 Live Patching Operating systems & Components / Operating system kgraft-patch-4_12_14-95_111-default Operating systems & Components / Operating system package or component |
| Vendor | SUSE |
Security Bulletin
This security bulletin contains information about 3 vulnerabilities.
1) Infinite loop
EUVDB-ID: #VU74631
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-2023-1390
CWE-ID:
CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to infinite loop in tipc_link_xmit() within the Linux kernel TIPC kernel module when parsing UDp packets. A remote attacker can send two small UDP packets to a system with a UDP bearer and consume all available CPU resources.
Update the affected package the Linux Kernel (Live Patch 31 for SLE 12 SP4) to the latest version.
Vulnerable software versionsSUSE Linux Enterprise Server for SAP Applications 12: SP4
SUSE Linux Enterprise Server 12: SP4
SUSE Linux Enterprise High Performance Computing 12: SP4
SUSE Linux Enterprise Live Patching: 12-SP4
kgraft-patch-4_12_14-95_111-default: before 8-2.2
CPE2.3- cpe:2.3:o:suse:suse_linux_enterprise_server_for_sap_applications_12:SP4:*:*:*:*:*:*:
- cpe:2.3:o:suse:suse_linux_enterprise_server_12:SP4:*:*:*:*:*:*:
- cpe:2.3:o:suse:suse_linux_enterprise_high_performance_computing_12:SP4:*:*:*:*:*:*:
- cpe:2.3:o:suse:suse_linux_enterprise_live_patching:12-SP4:*:*:*:*:*:*:
http://www.suse.com/support/update/announcement/2023/suse-su-20232708-1/
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) Type Confusion
EUVDB-ID: #VU71477
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-2023-23455
CWE-ID:
CWE-843 - Type confusion
Exploit availability: No
DescriptionThe vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to a type confusion error within the atm_tc_enqueue() function in net/sched/sch_atm.c in the Linux kernel. A local user can trigger a type confusion error and perform a denial of service (DoS) attack.
Update the affected package the Linux Kernel (Live Patch 31 for SLE 12 SP4) to the latest version.
Vulnerable software versionsSUSE Linux Enterprise Server for SAP Applications 12: SP4
SUSE Linux Enterprise Server 12: SP4
SUSE Linux Enterprise High Performance Computing 12: SP4
SUSE Linux Enterprise Live Patching: 12-SP4
kgraft-patch-4_12_14-95_111-default: before 8-2.2
CPE2.3- cpe:2.3:o:suse:suse_linux_enterprise_server_for_sap_applications_12:SP4:*:*:*:*:*:*:
- cpe:2.3:o:suse:suse_linux_enterprise_server_12:SP4:*:*:*:*:*:*:
- cpe:2.3:o:suse:suse_linux_enterprise_high_performance_computing_12:SP4:*:*:*:*:*:*:
- cpe:2.3:o:suse:suse_linux_enterprise_live_patching:12-SP4:*:*:*:*:*:*:
http://www.suse.com/support/update/announcement/2023/suse-su-20232708-1/
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.
3) Out-of-bounds write
EUVDB-ID: #VU76098
Risk: Low
CVSSv3.1: 7.1 [CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2023-31436
CWE-ID:
CWE-787 - Out-of-bounds write
Exploit availability: No
Description The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error within the qfq_change_class() function in net/sched/sch_qfq.c when handling the MTU value provided to the QFQ Scheduler. A local user can trigger an out-of-bounds write and execute arbitrary code with elevated privileges.
Update the affected package the Linux Kernel (Live Patch 31 for SLE 12 SP4) to the latest version.
Vulnerable software versionsSUSE Linux Enterprise Server for SAP Applications 12: SP4
SUSE Linux Enterprise Server 12: SP4
SUSE Linux Enterprise High Performance Computing 12: SP4
SUSE Linux Enterprise Live Patching: 12-SP4
kgraft-patch-4_12_14-95_111-default: before 8-2.2
CPE2.3- cpe:2.3:o:suse:suse_linux_enterprise_server_for_sap_applications_12:SP4:*:*:*:*:*:*:
- cpe:2.3:o:suse:suse_linux_enterprise_server_12:SP4:*:*:*:*:*:*:
- cpe:2.3:o:suse:suse_linux_enterprise_high_performance_computing_12:SP4:*:*:*:*:*:*:
- cpe:2.3:o:suse:suse_linux_enterprise_live_patching:12-SP4:*:*:*:*:*:*:
http://www.suse.com/support/update/announcement/2023/suse-su-20232708-1/
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.
