SUSE update for the Linux Kernel (Live Patch 17 for SLE 12 SP5)
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 3 |
| CVE-ID | CVE-2021-23134 CVE-2021-32399 CVE-2021-33034 |
| CWE-ID | CWE-416 CWE-362 |
| Exploitation vector | Local |
| Public exploit | N/A |
| Vulnerable software |
SUSE Linux Enterprise Module for Live Patching Operating systems & Components / Operating system SUSE Linux Enterprise Live Patching Operating systems & Components / Operating system kgraft-patch-4_12_14-122_66-default Operating systems & Components / Operating system package or component kernel-livepatch-SLE15-SP2_Update_12-debugsource Operating systems & Components / Operating system package or component kernel-livepatch-5_3_18-24_61-default-debuginfo Operating systems & Components / Operating system package or component kernel-livepatch-5_3_18-24_61-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: #VU63657
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-2021-23134
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 nfc sockets in the Linux Kernel. A local user with the CAP_NET_RAW capability can trigger use-after-free and escalate privileges on the system.
MitigationUpdate the affected package the Linux Kernel (Live Patch 17 for SLE 12 SP5) to the latest version.
Vulnerable software versionsSUSE Linux Enterprise Module for Live Patching: 15-SP2
SUSE Linux Enterprise Live Patching: 12-SP5
kgraft-patch-4_12_14-122_66-default: before 3-2.1
kernel-livepatch-SLE15-SP2_Update_12-debugsource: before 2-2.1
kernel-livepatch-5_3_18-24_61-default-debuginfo: before 2-2.1
kernel-livepatch-5_3_18-24_61-default: before 2-2.1
CPE2.3- cpe:2.3:o:suse:suse_linux_enterprise_module_for_live_patching:15-SP2:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_linux_enterprise_live_patching:12-SP5:*:*:*:*:*:*:*
- cpe:2.3:a:suse:kgraft-patch-4_12_14-122_66-default:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:kernel-livepatch-sle15-sp2_update_12-debugsource:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:kernel-livepatch-5_3_18-24_61-default-debuginfo:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:kernel-livepatch-5_3_18-24_61-default:*:*:*:*:*:suse_linux:*:*
https://www.suse.com/support/update/announcement/2021/suse-su-20212067-1/
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) Race condition
EUVDB-ID: #VU55257
Risk: Low
CVSSv4.0: 4.4 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2021-32399
Exploit availability: No
DescriptionThe vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a race condition for removal of the HCI controller within net/bluetooth/hci_request.c in the Linux kernel. 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 17 for SLE 12 SP5) to the latest version.
Vulnerable software versionsSUSE Linux Enterprise Module for Live Patching: 15-SP2
SUSE Linux Enterprise Live Patching: 12-SP5
kgraft-patch-4_12_14-122_66-default: before 3-2.1
kernel-livepatch-SLE15-SP2_Update_12-debugsource: before 2-2.1
kernel-livepatch-5_3_18-24_61-default-debuginfo: before 2-2.1
kernel-livepatch-5_3_18-24_61-default: before 2-2.1
CPE2.3- cpe:2.3:o:suse:suse_linux_enterprise_module_for_live_patching:15-SP2:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_linux_enterprise_live_patching:12-SP5:*:*:*:*:*:*:*
- cpe:2.3:a:suse:kgraft-patch-4_12_14-122_66-default:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:kernel-livepatch-sle15-sp2_update_12-debugsource:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:kernel-livepatch-5_3_18-24_61-default-debuginfo:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:kernel-livepatch-5_3_18-24_61-default:*:*:*:*:*:suse_linux:*:*
https://www.suse.com/support/update/announcement/2021/suse-su-20212067-1/
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: #VU54454
Risk: Low
CVSSv4.0: 4.4 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2021-33034
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 net/bluetooth/hci_event.c when destroying an hci_chan. A local user can escalate privileges on the system.
Update the affected package the Linux Kernel (Live Patch 17 for SLE 12 SP5) to the latest version.
Vulnerable software versionsSUSE Linux Enterprise Module for Live Patching: 15-SP2
SUSE Linux Enterprise Live Patching: 12-SP5
kgraft-patch-4_12_14-122_66-default: before 3-2.1
kernel-livepatch-SLE15-SP2_Update_12-debugsource: before 2-2.1
kernel-livepatch-5_3_18-24_61-default-debuginfo: before 2-2.1
kernel-livepatch-5_3_18-24_61-default: before 2-2.1
CPE2.3- cpe:2.3:o:suse:suse_linux_enterprise_module_for_live_patching:15-SP2:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_linux_enterprise_live_patching:12-SP5:*:*:*:*:*:*:*
- cpe:2.3:a:suse:kgraft-patch-4_12_14-122_66-default:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:kernel-livepatch-sle15-sp2_update_12-debugsource:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:kernel-livepatch-5_3_18-24_61-default-debuginfo:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:kernel-livepatch-5_3_18-24_61-default:*:*:*:*:*:suse_linux:*:*
https://www.suse.com/support/update/announcement/2021/suse-su-20212067-1/
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.
