SUSE update for the Linux Kernel (Live Patch 36 for SLE 12 SP3)
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 3 |
| CVE-ID | CVE-2021-26930 CVE-2021-26931 CVE-2021-28688 |
| CWE-ID | CWE-399 CWE-770 CWE-665 |
| Exploitation vector | Network |
| Public exploit | N/A |
| 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_138-default-debuginfo Operating systems & Components / Operating system package or component kgraft-patch-4_4_180-94_138-default Operating systems & Components / Operating system package or component kgraft-patch-4_4_180-94_135-default-debuginfo Operating systems & Components / Operating system package or component kgraft-patch-4_4_180-94_135-default Operating systems & Components / Operating system package or component kgraft-patch-4_4_180-94_130-default-debuginfo Operating systems & Components / Operating system package or component kgraft-patch-4_4_180-94_130-default Operating systems & Components / Operating system package or component kgraft-patch-4_4_180-94_127-default-debuginfo Operating systems & Components / Operating system package or component kgraft-patch-4_4_180-94_127-default Operating systems & Components / Operating system package or component kgraft-patch-4_4_180-94_124-default-debuginfo Operating systems & Components / Operating system package or component kgraft-patch-4_4_180-94_124-default Operating systems & Components / Operating system package or component kgraft-patch-4_4_180-94_121-default-debuginfo Operating systems & Components / Operating system package or component kgraft-patch-4_4_180-94_121-default Operating systems & Components / Operating system package or component kgraft-patch-4_4_180-94_116-default-debuginfo Operating systems & Components / Operating system package or component kgraft-patch-4_4_180-94_116-default Operating systems & Components / Operating system package or component |
| Vendor | SUSE |
Security Bulletin
This security bulletin contains information about 3 vulnerabilities.
1) Resource management error
EUVDB-ID: #VU51587
Risk: Medium
CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2021-26930
CWE-ID:
CWE-399 - Resource Management Errors
Exploit availability: No
DescriptionThe vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper management of internal resources when processing service requests to the PV backend within drivers/block/xen-blkback/blkback.c driver in Xen. A local user on the guest OS can perform a denial of service (DoS) attack.
MitigationUpdate the affected package the Linux Kernel (Live Patch 36 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_138-default-debuginfo: before 4-2.2
kgraft-patch-4_4_180-94_138-default: before 4-2.2
kgraft-patch-4_4_180-94_135-default-debuginfo: before 6-2.2
kgraft-patch-4_4_180-94_135-default: before 6-2.2
kgraft-patch-4_4_180-94_130-default-debuginfo: before 8-2.2
kgraft-patch-4_4_180-94_130-default: before 8-2.2
kgraft-patch-4_4_180-94_127-default-debuginfo: before 9-2.2
kgraft-patch-4_4_180-94_127-default: before 9-2.2
kgraft-patch-4_4_180-94_124-default-debuginfo: before 9-2.2
kgraft-patch-4_4_180-94_124-default: before 9-2.2
kgraft-patch-4_4_180-94_121-default-debuginfo: before 9-2.2
kgraft-patch-4_4_180-94_121-default: before 9-2.2
kgraft-patch-4_4_180-94_116-default-debuginfo: before 10-2.2
kgraft-patch-4_4_180-94_116-default: before 10-2.2
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:a:suse:kgraft-patch-4_4_180-94_138-default-debuginfo:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:kgraft-patch-4_4_180-94_138-default:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:kgraft-patch-4_4_180-94_135-default-debuginfo:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:kgraft-patch-4_4_180-94_135-default:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:kgraft-patch-4_4_180-94_130-default-debuginfo:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:kgraft-patch-4_4_180-94_130-default:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:kgraft-patch-4_4_180-94_127-default-debuginfo:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:kgraft-patch-4_4_180-94_127-default:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:kgraft-patch-4_4_180-94_124-default-debuginfo:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:kgraft-patch-4_4_180-94_124-default:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:kgraft-patch-4_4_180-94_121-default-debuginfo:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:kgraft-patch-4_4_180-94_121-default:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:kgraft-patch-4_4_180-94_116-default-debuginfo:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:kgraft-patch-4_4_180-94_116-default:*:*:*:*:*:suse_linux:*:*
https://www.suse.com/support/update/announcement/2021/suse-su-20211373-1/
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
2) Allocation of resources without limits or throttling
EUVDB-ID: #VU92418
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-2021-26931
CWE-ID:
CWE-770 - Allocation of Resources Without Limits or Throttling
Exploit availability: No
DescriptionThe vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to allocation of resources without limits or throttling error within the scsiback_gnttab_data_map_batch() function in drivers/xen/xen-scsiback.c. A local user can perform a denial of service (DoS) attack.
MitigationUpdate the affected package the Linux Kernel (Live Patch 36 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_138-default-debuginfo: before 4-2.2
kgraft-patch-4_4_180-94_138-default: before 4-2.2
kgraft-patch-4_4_180-94_135-default-debuginfo: before 6-2.2
kgraft-patch-4_4_180-94_135-default: before 6-2.2
kgraft-patch-4_4_180-94_130-default-debuginfo: before 8-2.2
kgraft-patch-4_4_180-94_130-default: before 8-2.2
kgraft-patch-4_4_180-94_127-default-debuginfo: before 9-2.2
kgraft-patch-4_4_180-94_127-default: before 9-2.2
kgraft-patch-4_4_180-94_124-default-debuginfo: before 9-2.2
kgraft-patch-4_4_180-94_124-default: before 9-2.2
kgraft-patch-4_4_180-94_121-default-debuginfo: before 9-2.2
kgraft-patch-4_4_180-94_121-default: before 9-2.2
kgraft-patch-4_4_180-94_116-default-debuginfo: before 10-2.2
kgraft-patch-4_4_180-94_116-default: before 10-2.2
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:a:suse:kgraft-patch-4_4_180-94_138-default-debuginfo:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:kgraft-patch-4_4_180-94_138-default:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:kgraft-patch-4_4_180-94_135-default-debuginfo:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:kgraft-patch-4_4_180-94_135-default:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:kgraft-patch-4_4_180-94_130-default-debuginfo:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:kgraft-patch-4_4_180-94_130-default:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:kgraft-patch-4_4_180-94_127-default-debuginfo:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:kgraft-patch-4_4_180-94_127-default:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:kgraft-patch-4_4_180-94_124-default-debuginfo:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:kgraft-patch-4_4_180-94_124-default:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:kgraft-patch-4_4_180-94_121-default-debuginfo:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:kgraft-patch-4_4_180-94_121-default:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:kgraft-patch-4_4_180-94_116-default-debuginfo:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:kgraft-patch-4_4_180-94_116-default:*:*:*:*:*:suse_linux:*:*
https://www.suse.com/support/update/announcement/2021/suse-su-20211373-1/
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) 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 36 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_138-default-debuginfo: before 4-2.2
kgraft-patch-4_4_180-94_138-default: before 4-2.2
kgraft-patch-4_4_180-94_135-default-debuginfo: before 6-2.2
kgraft-patch-4_4_180-94_135-default: before 6-2.2
kgraft-patch-4_4_180-94_130-default-debuginfo: before 8-2.2
kgraft-patch-4_4_180-94_130-default: before 8-2.2
kgraft-patch-4_4_180-94_127-default-debuginfo: before 9-2.2
kgraft-patch-4_4_180-94_127-default: before 9-2.2
kgraft-patch-4_4_180-94_124-default-debuginfo: before 9-2.2
kgraft-patch-4_4_180-94_124-default: before 9-2.2
kgraft-patch-4_4_180-94_121-default-debuginfo: before 9-2.2
kgraft-patch-4_4_180-94_121-default: before 9-2.2
kgraft-patch-4_4_180-94_116-default-debuginfo: before 10-2.2
kgraft-patch-4_4_180-94_116-default: before 10-2.2
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:a:suse:kgraft-patch-4_4_180-94_138-default-debuginfo:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:kgraft-patch-4_4_180-94_138-default:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:kgraft-patch-4_4_180-94_135-default-debuginfo:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:kgraft-patch-4_4_180-94_135-default:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:kgraft-patch-4_4_180-94_130-default-debuginfo:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:kgraft-patch-4_4_180-94_130-default:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:kgraft-patch-4_4_180-94_127-default-debuginfo:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:kgraft-patch-4_4_180-94_127-default:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:kgraft-patch-4_4_180-94_124-default-debuginfo:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:kgraft-patch-4_4_180-94_124-default:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:kgraft-patch-4_4_180-94_121-default-debuginfo:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:kgraft-patch-4_4_180-94_121-default:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:kgraft-patch-4_4_180-94_116-default-debuginfo:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:kgraft-patch-4_4_180-94_116-default:*:*:*:*:*:suse_linux:*:*
https://www.suse.com/support/update/announcement/2021/suse-su-20211373-1/
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.
