Red Hat Enterprise Linux 7.6 update for kernel

Published: 2022-08-02 | Updated: 2022-08-25

Risk	Low
Patch available	YES
Number of vulnerabilities	1
CVE-ID	CVE-2022-32250
CWE-ID	CWE-416
Exploitation vector	Local
Public exploit	Public exploit code for vulnerability #1 is available.
Vulnerable software Subscribe	Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions Operating systems & Components / Operating system package or component 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 one low risk vulnerability.

1) Use-after-free

EUVDB-ID: #VU64668

Risk: Low

CVSSv3.1:

CVE-ID: CVE-2022-32250

CWE-ID: CWE-416 - Use After Free

Exploit availability: Yes

Description

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

The vulnerability exists due to a use-after-free incorrect NFT_STATEFUL_EXPR in net/netfilter/nf_tables_api.c in Linux kernel. A local user with ability to create user/net namespaces can execute arbitrary code with root privileges.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

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

Red Hat Enterprise Linux Server - TUS: 7.6

Red Hat Enterprise Linux Server - AUS: 7.6

kernel (Red Hat package): before 3.10.0-957.95.1.el7

CPE2.3

cpe:2.3:o:red_hat:red_hat_enterprise_linux_server_\(for_ibm_power_le\)_-_update_services_for_sap_solutions:7.6:*:*:*:*:*:*:*

External links

http://access.redhat.com/errata/RHSA-2022:5802

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?