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): 3.10.0-1160.6.1.el7 - 3.10.0-1160.62.1.el7

Red Hat Enterprise Linux for Power, little endian: 7

Red Hat Enterprise Linux for Power, big endian: 7

Red Hat Enterprise Linux for IBM z Systems: 7

Red Hat Enterprise Linux for Scientific Computing: 7

Red Hat Enterprise Linux Desktop: 7

Red Hat Enterprise Linux Workstation: 7

Red Hat Enterprise Linux Server: 7

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CPE2.3

• cpe:2.3:o:red_hat:kernel:3.10.0-1160.62.1.el7:*:*:*:*:red_hat_enterprise_linux:*:*

External links

http://access.redhat.com/errata/RHSA-2022:4642

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?