SUSE update for the Linux Kernel (Live Patch 26 for SLE 15 SP2)
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 3 |
| CVE-ID | CVE-2021-39698 CVE-2022-1011 CVE-2022-1158 |
| CWE-ID | CWE-416 CWE-787 |
| Exploitation vector | Network |
| Public exploit | Public exploit code for vulnerability #2 is available. |
| Vulnerable software |
SUSE Linux Enterprise Server for SAP Applications Operating systems & Components / Operating system SUSE Linux Enterprise Server Operating systems & Components / Operating system SUSE Linux Enterprise Module for Live Patching Operating systems & Components / Operating system SUSE Linux Enterprise High Performance Computing Operating systems & Components / Operating system kernel-livepatch-SLE15-SP2_Update_26-debugsource Operating systems & Components / Operating system package or component kernel-livepatch-5_3_18-150200_24_112-default-debuginfo Operating systems & Components / Operating system package or component kernel-livepatch-5_3_18-150200_24_112-default Operating systems & Components / Operating system package or component |
| Vendor | SUSE |
Security Bulletin
This security bulletin contains information about 3 vulnerabilities.
1) Use-after-free
EUVDB-ID: #VU61097
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-2021-39698
CWE-ID:
CWE-416 - Use After Free
Exploit availability: No
DescriptionThe vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error in Linux kernel. A local user can run a specially crafted program to trigger the use-after-free error and execute arbitrary code with elevated privileges.
Update the affected package the Linux Kernel (Live Patch 26 for SLE 15 SP2) to the latest version.
Vulnerable software versionsSUSE Linux Enterprise Server for SAP Applications: 15-SP2
SUSE Linux Enterprise Server: 15-SP2
SUSE Linux Enterprise Module for Live Patching: 15-SP2
SUSE Linux Enterprise High Performance Computing: 15-SP2
kernel-livepatch-SLE15-SP2_Update_26-debugsource: before 2-150200.2.1
kernel-livepatch-5_3_18-150200_24_112-default-debuginfo: before 2-150200.2.1
kernel-livepatch-5_3_18-150200_24_112-default: before 2-150200.2.1
CPE2.3- cpe:2.3:o:suse:suse_linux_enterprise_server_for_sap_applications:15-SP2:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_linux_enterprise_server:15-SP2:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_linux_enterprise_module_for_live_patching:15-SP2:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_linux_enterprise_high_performance_computing:15-SP2:*:*:*:*:*:*:*
- cpe:2.3:o:suse:kernel-livepatch-sle15-sp2_update_26-debugsource:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:o:suse:kernel-livepatch-5_3_18-150200_24_112-default-debuginfo:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:o:suse:kernel-livepatch-5_3_18-150200_24_112-default:*:*:*:*:*:suse_linux:*:*
https://www.suse.com/support/update/announcement/2022/suse-su-20221634-1/
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: #VU63386
Risk: Low
CVSSv4.0: 7.1 [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:P/U:Clear]
CVE-ID: CVE-2022-1011
CWE-ID:
CWE-416 - Use After Free
Exploit availability: Yes
DescriptionThe vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error in the write() function of FUSE filesystem. A local user can retireve (partial) /etc/shadow hashes and execute arbitrary code with elevated privileges.
MitigationUpdate the affected package the Linux Kernel (Live Patch 26 for SLE 15 SP2) to the latest version.
Vulnerable software versionsSUSE Linux Enterprise Server for SAP Applications: 15-SP2
SUSE Linux Enterprise Server: 15-SP2
SUSE Linux Enterprise Module for Live Patching: 15-SP2
SUSE Linux Enterprise High Performance Computing: 15-SP2
kernel-livepatch-SLE15-SP2_Update_26-debugsource: before 2-150200.2.1
kernel-livepatch-5_3_18-150200_24_112-default-debuginfo: before 2-150200.2.1
kernel-livepatch-5_3_18-150200_24_112-default: before 2-150200.2.1
CPE2.3- cpe:2.3:o:suse:suse_linux_enterprise_server_for_sap_applications:15-SP2:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_linux_enterprise_server:15-SP2:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_linux_enterprise_module_for_live_patching:15-SP2:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_linux_enterprise_high_performance_computing:15-SP2:*:*:*:*:*:*:*
- cpe:2.3:o:suse:kernel-livepatch-sle15-sp2_update_26-debugsource:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:o:suse:kernel-livepatch-5_3_18-150200_24_112-default-debuginfo:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:o:suse:kernel-livepatch-5_3_18-150200_24_112-default:*:*:*:*:*:suse_linux:*:*
https://www.suse.com/support/update/announcement/2022/suse-su-20221634-1/
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. However, proof of concept for this vulnerability is available.
3) Out-of-bounds write
EUVDB-ID: #VU63166
Risk: Medium
CVSSv4.0: 4.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2022-1158
CWE-ID:
CWE-787 - Out-of-bounds write
Exploit availability: No
Description The vulnerability allows a remote user to perform a denial of service (DoS) attack.
The vulnerability exists due the KVM implementation in Linux kernel does not properly perform guest page table updates in some situations. A remote user on the guest operating system can trigger memory corruption and perform a denial of service attack against the host OS.
Update the affected package the Linux Kernel (Live Patch 26 for SLE 15 SP2) to the latest version.
Vulnerable software versionsSUSE Linux Enterprise Server for SAP Applications: 15-SP2
SUSE Linux Enterprise Server: 15-SP2
SUSE Linux Enterprise Module for Live Patching: 15-SP2
SUSE Linux Enterprise High Performance Computing: 15-SP2
kernel-livepatch-SLE15-SP2_Update_26-debugsource: before 2-150200.2.1
kernel-livepatch-5_3_18-150200_24_112-default-debuginfo: before 2-150200.2.1
kernel-livepatch-5_3_18-150200_24_112-default: before 2-150200.2.1
CPE2.3- cpe:2.3:o:suse:suse_linux_enterprise_server_for_sap_applications:15-SP2:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_linux_enterprise_server:15-SP2:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_linux_enterprise_module_for_live_patching:15-SP2:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_linux_enterprise_high_performance_computing:15-SP2:*:*:*:*:*:*:*
- cpe:2.3:o:suse:kernel-livepatch-sle15-sp2_update_26-debugsource:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:o:suse:kernel-livepatch-5_3_18-150200_24_112-default-debuginfo:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:o:suse:kernel-livepatch-5_3_18-150200_24_112-default:*:*:*:*:*:suse_linux:*:*
https://www.suse.com/support/update/announcement/2022/suse-su-20221634-1/
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
