SUSE update for the Linux Kernel (Live Patch 44 for SLE 12 SP3)
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 3 |
| CVE-ID | CVE-2021-28688 CVE-2021-39713 CVE-2022-1011 |
| CWE-ID | CWE-665 CWE-254 CWE-416 |
| Exploitation vector | Local |
| Public exploit | Public exploit code for vulnerability #3 is available. |
| Vulnerable software Subscribe |
SUSE Linux Enterprise Server for SAP Operating systems & Components / Operating system SUSE Linux Enterprise Server Operating systems & Components / Operating system kgraft-patch-4_4_180-94_161-default-debuginfo Operating systems & Components / Operating system package or component kgraft-patch-4_4_180-94_161-default Operating systems & Components / Operating system package or component |
| Vendor | SUSE |
Security Bulletin
This security bulletin contains information about 3 vulnerabilities.
1) Improper Initialization
EUVDB-ID: #VU63658
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-2021-28688
CWE-ID:
CWE-665 - Improper Initialization
Exploit availability: No
DescriptionThe vulnerability allows a local user to perform a denial of service attack.
The vulnerability exists due to improper initialization of pointers such that subsequent cleanup code wouldn't use uninitialized or stale values. A local user can perform a denial of service attack.
MitigationUpdate the affected package the Linux Kernel (Live Patch 44 for SLE 12 SP3) to the latest version.
Vulnerable software versionsSUSE Linux Enterprise Server for SAP: 12-SP3
SUSE Linux Enterprise Server: 12-SP3-LTSS
kgraft-patch-4_4_180-94_161-default-debuginfo: before 2-2.1
kgraft-patch-4_4_180-94_161-default: before 2-2.1
CPE2.3- cpe:2.3:o:suse:suse_linux_enterprise_server_for_sap:12-SP3:*:*:*:*:*:*:
- cpe:2.3:o:suse:suse_linux_enterprise_server:12-SP3-LTSS:*:*:*:*:*:*:
http://www.suse.com/support/update/announcement/2022/suse-su-20221641-1/
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) Security features bypass
EUVDB-ID: #VU63350
Risk: Low
CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-39713
CWE-ID:
CWE-254 - Security Features
Exploit availability: No
DescriptionThe vulnerability allows a local application to escalate privileges on the system.
The vulnerability exists due to multiple issues in Qdisc implementation related to rcu read lock. A local application can execute arbitrary code with elevated privileges.
Update the affected package the Linux Kernel (Live Patch 44 for SLE 12 SP3) to the latest version.
Vulnerable software versionsSUSE Linux Enterprise Server for SAP: 12-SP3
SUSE Linux Enterprise Server: 12-SP3-LTSS
kgraft-patch-4_4_180-94_161-default-debuginfo: before 2-2.1
kgraft-patch-4_4_180-94_161-default: before 2-2.1
CPE2.3- cpe:2.3:o:suse:suse_linux_enterprise_server_for_sap:12-SP3:*:*:*:*:*:*:
- cpe:2.3:o:suse:suse_linux_enterprise_server:12-SP3-LTSS:*:*:*:*:*:*:
http://www.suse.com/support/update/announcement/2022/suse-su-20221641-1/
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) Use-after-free
EUVDB-ID: #VU63386
Risk: Low
CVSSv3.1: 7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C]
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 44 for SLE 12 SP3) to the latest version.
Vulnerable software versionsSUSE Linux Enterprise Server for SAP: 12-SP3
SUSE Linux Enterprise Server: 12-SP3-LTSS
kgraft-patch-4_4_180-94_161-default-debuginfo: before 2-2.1
kgraft-patch-4_4_180-94_161-default: before 2-2.1
CPE2.3- cpe:2.3:o:suse:suse_linux_enterprise_server_for_sap:12-SP3:*:*:*:*:*:*:
- cpe:2.3:o:suse:suse_linux_enterprise_server:12-SP3-LTSS:*:*:*:*:*:*:
http://www.suse.com/support/update/announcement/2022/suse-su-20221641-1/
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.
