SUSE update for the Linux Kernel (Live Patch 36 for SLE 12 SP3)
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 2 |
| CVE-ID | CVE-2021-3609 CVE-2021-37576 |
| CWE-ID | CWE-362 CWE-787 |
| Exploitation vector | Network |
| Public exploit | Public exploit code for vulnerability #1 is available. |
| 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_144-default-debuginfo Operating systems & Components / Operating system package or component kgraft-patch-4_4_180-94_144-default Operating systems & Components / Operating system package or component kgraft-patch-4_4_180-94_141-default-debuginfo Operating systems & Components / Operating system package or component kgraft-patch-4_4_180-94_141-default Operating systems & Components / Operating system package or component 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 |
| Vendor | SUSE |
Security Bulletin
This security bulletin contains information about 2 vulnerabilities.
1) Race condition
EUVDB-ID: #VU54292
Risk: Medium
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:Green]
CVE-ID: CVE-2021-3609
Exploit availability: No
DescriptionThe vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a race condition in the CAN BCM networking protocol (net/can/bcm.c) in the Linux kernel ranging from version 2.6.25 to mainline 5.13-rc6. A local user can exploit the race and gain unauthorized access to sensitive information and escalate privileges on the system.
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_144-default-debuginfo: before 5-2.1
kgraft-patch-4_4_180-94_144-default: before 5-2.1
kgraft-patch-4_4_180-94_141-default-debuginfo: before 8-2.2
kgraft-patch-4_4_180-94_141-default: before 8-2.2
kgraft-patch-4_4_180-94_138-default-debuginfo: before 9-2.2
kgraft-patch-4_4_180-94_138-default: before 9-2.2
kgraft-patch-4_4_180-94_135-default-debuginfo: before 11-2.2
kgraft-patch-4_4_180-94_135-default: before 11-2.2
kgraft-patch-4_4_180-94_130-default-debuginfo: before 13-2.2
kgraft-patch-4_4_180-94_130-default: before 13-2.2
kgraft-patch-4_4_180-94_127-default-debuginfo: before 14-2.2
kgraft-patch-4_4_180-94_127-default: before 14-2.2
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_144-default-debuginfo:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:kgraft-patch-4_4_180-94_144-default:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:kgraft-patch-4_4_180-94_141-default-debuginfo:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:kgraft-patch-4_4_180-94_141-default:*:*:*:*:*:suse_linux:*:*
- 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:*:*
https://www.suse.com/support/update/announcement/2021/suse-su-20212842-1/
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.
2) Out-of-bounds write
EUVDB-ID: #VU57101
Risk: Medium
CVSSv4.0: 4.8 [CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2021-37576
CWE-ID:
CWE-787 - Out-of-bounds write
Exploit availability: No
DescriptionThe vulnerability allows a remote user to escalate privileges on the system.
The vulnerability exists due to a boundary error in arch/powerpc/kvm/book3s_rtas.c in the Linux kernel through 5.13.5 on the powerpc platform. An attacker on KVM guest OS can cause host OS memory corruption via rtas_args.nargs and execute arbitrary code on the host OS.
Update 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_144-default-debuginfo: before 5-2.1
kgraft-patch-4_4_180-94_144-default: before 5-2.1
kgraft-patch-4_4_180-94_141-default-debuginfo: before 8-2.2
kgraft-patch-4_4_180-94_141-default: before 8-2.2
kgraft-patch-4_4_180-94_138-default-debuginfo: before 9-2.2
kgraft-patch-4_4_180-94_138-default: before 9-2.2
kgraft-patch-4_4_180-94_135-default-debuginfo: before 11-2.2
kgraft-patch-4_4_180-94_135-default: before 11-2.2
kgraft-patch-4_4_180-94_130-default-debuginfo: before 13-2.2
kgraft-patch-4_4_180-94_130-default: before 13-2.2
kgraft-patch-4_4_180-94_127-default-debuginfo: before 14-2.2
kgraft-patch-4_4_180-94_127-default: before 14-2.2
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_144-default-debuginfo:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:kgraft-patch-4_4_180-94_144-default:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:kgraft-patch-4_4_180-94_141-default-debuginfo:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:kgraft-patch-4_4_180-94_141-default:*:*:*:*:*:suse_linux:*:*
- 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:*:*
https://www.suse.com/support/update/announcement/2021/suse-su-20212842-1/
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.
