Red Hat Enterprise Linux 7.6 update for kernel

Published: 2022-05-12 | Updated: 2022-08-28

Risk	Low
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2022-0492 CVE-2021-4028
CWE-ID	CWE-264 CWE-416
Exploitation vector	Local
Public exploit	Public exploit code for vulnerability #1 is available.
Vulnerable software Subscribe	kernel (Red Hat package) Operating systems & Components / Operating system package or component Red Hat Enterprise Linux Server - TUS Operating systems & Components / Operating system 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: #VU61245

Risk: Low

CVSSv3.1:

CVE-ID: CVE-2022-0492

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

Exploit availability: Yes

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a logic error within the cgroup_release_agent_write() function in kernel/cgroup/cgroup-v1.c. A local user can use the cgroups v1 release_agent feature to escalate privileges and bypass the namespace isolation.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

kernel (Red Hat package): 3.10.0-957.1.3.el7 - 3.10.0-957.el7

Red Hat Enterprise Linux Server - TUS: 7.6

Red Hat Enterprise Linux Server - AUS: 7.6

CPE2.3

cpe:2.3:o:red_hat:kernel:3.10.0-957.92.1.el7:*:*:*:*:red_hat_enterprise_linux:*:*

External links

http://access.redhat.com/errata/RHSA-2022:2186

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?

2) Use-after-free

EUVDB-ID: #VU60797