SUSE update for the Linux Kernel (Live Patch 23 for SLE 15)
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 2 |
| CVE-ID | CVE-2021-28688 CVE-2021-3444 |
| CWE-ID | CWE-665 CWE-125 |
| 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_14-95_71-default Operating systems & Components / Operating system package or component kernel-livepatch-4_12_14-150_69-default-debuginfo Operating systems & Components / Operating system package or component kernel-livepatch-4_12_14-150_69-default Operating systems & Components / Operating system package or component |
| Vendor | SUSE |
Security Bulletin
This security bulletin contains information about 2 vulnerabilities.
1) 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 23 for SLE 15) to the latest version.
Vulnerable software versionsSUSE Linux Enterprise Module for Live Patching: 15-SP4
SUSE Linux Enterprise Live Patching: 12-SP4
kgraft-patch-4_12_14-95_71-default: before 3-2.2
kernel-livepatch-4_12_14-150_69-default-debuginfo: before 3-2.2
kernel-livepatch-4_12_14-150_69-default: before 3-2.2
CPE2.3- cpe:2.3:o:suse:suse_linux_enterprise_module_for_live_patching:15-SP4:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_linux_enterprise_live_patching:12-SP4:*:*:*:*:*:*:*
- cpe:2.3:a:suse:kgraft-patch-4_12_14-95_71-default:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:kernel-livepatch-4_12_14-150_69-default-debuginfo:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:kernel-livepatch-4_12_14-150_69-default:*:*:*:*:*:suse_linux:*:*
https://www.suse.com/support/update/announcement/2021/suse-su-20211347-1/
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) Out-of-bounds read
EUVDB-ID: #VU90368
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-2021-3444
CWE-ID:
CWE-125 - Out-of-bounds read
Exploit availability: No
DescriptionThe vulnerability allows a local user to execute arbitrary code.
The vulnerability exists due to an out-of-bounds read error within the fixup_bpf_calls() function in kernel/bpf/verifier.c. A local user can execute arbitrary code.
MitigationUpdate the affected package the Linux Kernel (Live Patch 23 for SLE 15) to the latest version.
Vulnerable software versionsSUSE Linux Enterprise Module for Live Patching: 15-SP4
SUSE Linux Enterprise Live Patching: 12-SP4
kgraft-patch-4_12_14-95_71-default: before 3-2.2
kernel-livepatch-4_12_14-150_69-default-debuginfo: before 3-2.2
kernel-livepatch-4_12_14-150_69-default: before 3-2.2
CPE2.3- cpe:2.3:o:suse:suse_linux_enterprise_module_for_live_patching:15-SP4:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_linux_enterprise_live_patching:12-SP4:*:*:*:*:*:*:*
- cpe:2.3:a:suse:kgraft-patch-4_12_14-95_71-default:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:kernel-livepatch-4_12_14-150_69-default-debuginfo:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:kernel-livepatch-4_12_14-150_69-default:*:*:*:*:*:suse_linux:*:*
https://www.suse.com/support/update/announcement/2021/suse-su-20211347-1/
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.
