SUSE update for the Linux Kernel (Live Patch 13 for SLE 15 SP2)
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 3 |
| CVE-ID | CVE-2021-23134 CVE-2021-33034 CVE-2021-33200 |
| CWE-ID | CWE-416 CWE-787 |
| Exploitation vector | Local |
| Public exploit | N/A |
| Vulnerable software |
SUSE Linux Enterprise Module for Live Patching Operating systems & Components / Operating system kernel-livepatch-SLE15-SP2_Update_13-debugsource Operating systems & Components / Operating system package or component kernel-livepatch-5_3_18-24_64-default-debuginfo Operating systems & Components / Operating system package or component kernel-livepatch-5_3_18-24_64-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 13 for SLE 15 SP2) to the latest version.
Vulnerable software versionsSUSE Linux Enterprise Module for Live Patching: 15-SP2
kernel-livepatch-SLE15-SP2_Update_13-debugsource: before 2-2.1
kernel-livepatch-5_3_18-24_64-default-debuginfo: before 2-2.1
kernel-livepatch-5_3_18-24_64-default: before 2-2.1
CPE2.3- cpe:2.3:o:suse:suse_linux_enterprise_module_for_live_patching:15-SP2:*:*:*:*:*:*:*
- cpe:2.3:a:suse:kernel-livepatch-sle15-sp2_update_13-debugsource:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:kernel-livepatch-5_3_18-24_64-default-debuginfo:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:kernel-livepatch-5_3_18-24_64-default:*:*:*:*:*:suse_linux:*:*
https://www.suse.com/support/update/announcement/2021/suse-su-20212027-1/
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) 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 13 for SLE 15 SP2) to the latest version.
Vulnerable software versionsSUSE Linux Enterprise Module for Live Patching: 15-SP2
kernel-livepatch-SLE15-SP2_Update_13-debugsource: before 2-2.1
kernel-livepatch-5_3_18-24_64-default-debuginfo: before 2-2.1
kernel-livepatch-5_3_18-24_64-default: before 2-2.1
CPE2.3- cpe:2.3:o:suse:suse_linux_enterprise_module_for_live_patching:15-SP2:*:*:*:*:*:*:*
- cpe:2.3:a:suse:kernel-livepatch-sle15-sp2_update_13-debugsource:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:kernel-livepatch-5_3_18-24_64-default-debuginfo:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:kernel-livepatch-5_3_18-24_64-default:*:*:*:*:*:suse_linux:*:*
https://www.suse.com/support/update/announcement/2021/suse-su-20212027-1/
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) Out-of-bounds write
EUVDB-ID: #VU87989
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-2021-33200
CWE-ID:
CWE-787 - Out-of-bounds write
Exploit availability: No
Description The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error in kernel/bpf/verifier.c. A local user can trigger an out-of-bounds write and escalate privileges on the system.
Update the affected package the Linux Kernel (Live Patch 13 for SLE 15 SP2) to the latest version.
Vulnerable software versionsSUSE Linux Enterprise Module for Live Patching: 15-SP2
kernel-livepatch-SLE15-SP2_Update_13-debugsource: before 2-2.1
kernel-livepatch-5_3_18-24_64-default-debuginfo: before 2-2.1
kernel-livepatch-5_3_18-24_64-default: before 2-2.1
CPE2.3- cpe:2.3:o:suse:suse_linux_enterprise_module_for_live_patching:15-SP2:*:*:*:*:*:*:*
- cpe:2.3:a:suse:kernel-livepatch-sle15-sp2_update_13-debugsource:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:kernel-livepatch-5_3_18-24_64-default-debuginfo:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:kernel-livepatch-5_3_18-24_64-default:*:*:*:*:*:suse_linux:*:*
https://www.suse.com/support/update/announcement/2021/suse-su-20212027-1/
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.
