Red Hat Enterprise Linux Server 7.6 update for kpatch-patch

Published: 2022-02-15

Risk	Low
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2021-4155 CVE-2020-0466
CWE-ID	CWE-264
Exploitation vector	Local
Public exploit	N/A
Vulnerable software	kpatch-patch-3_10_0-957_84_1 (Red Hat package) Operating systems & Components / Operating system package or component kpatch-patch-3_10_0-957_80_1 (Red Hat package) Operating systems & Components / Operating system package or component kpatch-patch-3_10_0-957_78_2 (Red Hat package) Operating systems & Components / Operating system package or component kpatch-patch-3_10_0-957_76_1 (Red Hat package) Operating systems & Components / Operating system package or component kpatch-patch-3_10_0-957_72_1 (Red Hat package) Operating systems & Components / Operating system package or component kpatch-patch-3_10_0-957_70_1 (Red Hat package) Operating systems & Components / Operating system package or component Red Hat Enterprise Linux Server for x86_64 - Update Services for SAP Solutions Operating systems & Components / Operating system package or component Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions Operating systems & Components / Operating system package or component kpatch-patch-3_10_0-957_86_1 (Red Hat package) Operating systems & Components / Operating system package or component Red Hat Enterprise Linux Server - AUS Operating systems & Components / Operating system
Vendor	Red Hat Inc.

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU59812

Risk: Low

CVSSv4.0: 1.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-4155

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a local user to bypass implemented security restrictions.

The vulnerability exists due to the OS kernel does not impose correctly security restrictions. A local user can gain access to sensitive information on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

kpatch-patch-3_10_0-957_84_1 (Red Hat package): 1-1.el7

kpatch-patch-3_10_0-957_80_1 (Red Hat package): 1-1.el7 - 1-2.el7

kpatch-patch-3_10_0-957_78_2 (Red Hat package): 1-1.el7 - 1-3.el7

kpatch-patch-3_10_0-957_76_1 (Red Hat package): 1-1.el7 - 1-4.el7

kpatch-patch-3_10_0-957_72_1 (Red Hat package): 1-1.el7 - 1-4.el7

kpatch-patch-3_10_0-957_70_1 (Red Hat package): 1-2.el7 - 1-6.el7

Red Hat Enterprise Linux Server for x86_64 - Update Services for SAP Solutions: 7.6

Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions: 7.6

Red Hat Enterprise Linux Server - AUS: 7.6

kpatch-patch-3_10_0-957_86_1 (Red Hat package): before 1-1.el7

CPE2.3

External links

https://access.redhat.com/errata/RHSA-2022:0533

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) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU52033