SUSE update for the Linux Kernel (Live Patch 42 for SLE 12 SP3)
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 2 |
| CVE-ID | CVE-2021-0920 CVE-2021-28688 |
| CWE-ID | CWE-416 CWE-665 |
| Exploitation vector | Local |
| Public exploit | Vulnerability #1 is being exploited in the wild. |
| Vulnerable software |
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_153-default-debuginfo Operating systems & Components / Operating system package or component kgraft-patch-4_4_180-94_153-default Operating systems & Components / Operating system package or component |
| Vendor | SUSE |
Security Bulletin
This security bulletin contains information about 2 vulnerabilities.
1) Use-after-free
EUVDB-ID: #VU59811
Risk: Low
CVSSv4.0: 7.1 [CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Clear]
CVE-ID: CVE-2021-0920
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 within the unix_scm_to_skb() function of af_unix.c in Linux kernel. A local user can run a specially crafted program to trigger a race condition and execute arbitrary code with elevated privileges.
Update the affected package the Linux Kernel (Live Patch 42 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_153-default-debuginfo: before 2-2.1
kgraft-patch-4_4_180-94_153-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:*:*:*:*:*:*:*
- cpe:2.3:o:suse:kgraft-patch-4_4_180-94_153-default-debuginfo:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:o:suse:kgraft-patch-4_4_180-94_153-default:*:*:*:*:*:suse_linux:*:*
https://www.suse.com/support/update/announcement/2022/suse-su-20220668-1/
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?
Yes. This vulnerability is being exploited in the wild.
2) Improper Initialization
EUVDB-ID: #VU63658
Risk: Low
CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]
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 42 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_153-default-debuginfo: before 2-2.1
kgraft-patch-4_4_180-94_153-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:*:*:*:*:*:*:*
- cpe:2.3:o:suse:kgraft-patch-4_4_180-94_153-default-debuginfo:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:o:suse:kgraft-patch-4_4_180-94_153-default:*:*:*:*:*:suse_linux:*:*
https://www.suse.com/support/update/announcement/2022/suse-su-20220668-1/
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.
