Red Hat Enterprise Linux 8.4 update for kpatch-patch



| Updated: 2024-08-21
Risk Low
Patch available YES
Number of vulnerabilities 3
CVE-ID CVE-2021-4154
CVE-2022-0185
CVE-2021-4155
CWE-ID CWE-416
CWE-190
CWE-264
Exploitation vector Local
Public exploit Public exploit code for vulnerability #1 is available.
Vulnerability #2 is being exploited in the wild.
Vulnerable software
 kpatch-patch-4_18_0-305_7_1 (Red Hat package)
Operating systems & Components / Operating system package or component

kpatch-patch-4_18_0-305_3_1 (Red Hat package)
Operating systems & Components / Operating system package or component

kpatch-patch-4_18_0-305_25_1 (Red Hat package)
Operating systems & Components / Operating system package or component

kpatch-patch-4_18_0-305_19_1 (Red Hat package)
Operating systems & Components / Operating system package or component

kpatch-patch-4_18_0-305_17_1 (Red Hat package)
Operating systems & Components / Operating system package or component

kpatch-patch-4_18_0-305_12_1 (Red Hat package)
Operating systems & Components / Operating system package or component

kpatch-patch-4_18_0-305_10_2 (Red Hat package)
Operating systems & Components / Operating system package or component

kpatch-patch-4_18_0-305 (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-4_18_0-305_30_1 (Red Hat package)
Operating systems & Components / Operating system package or component

kpatch-patch-4_18_0-305_28_1 (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 for Power, little endian - Extended Update Support
Operating systems & Components / Operating system

Red Hat Enterprise Linux Server - AUS
Operating systems & Components / Operating system

Red Hat Enterprise Linux for x86_64 - Extended Update Support
Operating systems & Components / Operating system

Vendor Red Hat Inc.

Security Bulletin

This security bulletin contains information about 3 vulnerabilities.

1) Use-after-free

EUVDB-ID: #VU59840

Risk: Low

CVSSv4.0: 7.1 [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:P/U:Clear]

CVE-ID: CVE-2021-4154

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 error within the cgroup1_parse_param() function in kernel/cgroup/cgroup-v1.c in Linux kernel's cgroup v1 parser. A local user can execute arbitrary code via the fsconfig syscall parameter leading to a container breakout.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

kpatch-patch-4_18_0-305_7_1 (Red Hat package): 1-1.el8_4 - 1-6.el8_4

kpatch-patch-4_18_0-305_3_1 (Red Hat package): 1-1.el8_4 - 1-7.el8_4

kpatch-patch-4_18_0-305_25_1 (Red Hat package): 1-2.el8_4

kpatch-patch-4_18_0-305_19_1 (Red Hat package): 1-1.el8_4 - 1-3.el8_4

kpatch-patch-4_18_0-305_17_1 (Red Hat package): 1-1.el8_4 - 1-3.el8_4

kpatch-patch-4_18_0-305_12_1 (Red Hat package): 1-2.el8_4 - 1-4.el8_4

kpatch-patch-4_18_0-305_10_2 (Red Hat package): 1-3.el8_4 - 1-5.el8_4

kpatch-patch-4_18_0-305 (Red Hat package): 1-2.el8 - 1-8.el8

Red Hat Enterprise Linux Server for x86_64 - Update Services for SAP Solutions: 8.4

Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions: 8.4

Red Hat Enterprise Linux Server - TUS: 8.4

Red Hat Enterprise Linux for Power, little endian - Extended Update Support: 8.4

Red Hat Enterprise Linux Server - AUS: 8.4

Red Hat Enterprise Linux for x86_64 - Extended Update Support: 8.4

kpatch-patch-4_18_0-305_30_1 (Red Hat package): before 1-2.el8_4

kpatch-patch-4_18_0-305_28_1 (Red Hat package): before 1-2.el8_4

CPE2.3 External links

https://access.redhat.com/errata/RHSA-2022:0231


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. However, proof of concept for this vulnerability is available.

2) Integer overflow

EUVDB-ID: #VU59695

Risk: Low

CVSSv4.0: 8.5 [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:A/U:Clear]

CVE-ID: CVE-2022-0185

CWE-ID: CWE-190 - Integer overflow

Exploit availability: Yes

Description

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

The vulnerability exists due to integer overflow in the legacy_parse_param() function in fs/fs_context.c in Linux kernel. A local user can tun a specially crafted program to trigger integer overflow and execute arbitrary code with root privileges.


Mitigation

Install updates from vendor's website.

Vulnerable software versions

kpatch-patch-4_18_0-305_7_1 (Red Hat package): 1-1.el8_4 - 1-6.el8_4

kpatch-patch-4_18_0-305_3_1 (Red Hat package): 1-1.el8_4 - 1-7.el8_4

kpatch-patch-4_18_0-305_25_1 (Red Hat package): 1-2.el8_4

kpatch-patch-4_18_0-305_19_1 (Red Hat package): 1-1.el8_4 - 1-3.el8_4

kpatch-patch-4_18_0-305_17_1 (Red Hat package): 1-1.el8_4 - 1-3.el8_4

kpatch-patch-4_18_0-305_12_1 (Red Hat package): 1-2.el8_4 - 1-4.el8_4

kpatch-patch-4_18_0-305_10_2 (Red Hat package): 1-3.el8_4 - 1-5.el8_4

kpatch-patch-4_18_0-305 (Red Hat package): 1-2.el8 - 1-8.el8

Red Hat Enterprise Linux Server for x86_64 - Update Services for SAP Solutions: 8.4

Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions: 8.4

Red Hat Enterprise Linux Server - TUS: 8.4

Red Hat Enterprise Linux for Power, little endian - Extended Update Support: 8.4

Red Hat Enterprise Linux Server - AUS: 8.4

Red Hat Enterprise Linux for x86_64 - Extended Update Support: 8.4

kpatch-patch-4_18_0-305_30_1 (Red Hat package): before 1-2.el8_4

kpatch-patch-4_18_0-305_28_1 (Red Hat package): before 1-2.el8_4

CPE2.3 External links

https://access.redhat.com/errata/RHSA-2022:0231


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?

Yes. This vulnerability is being exploited in the wild.

3) 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-4_18_0-305_7_1 (Red Hat package): 1-1.el8_4 - 1-6.el8_4

kpatch-patch-4_18_0-305_3_1 (Red Hat package): 1-1.el8_4 - 1-7.el8_4

kpatch-patch-4_18_0-305_25_1 (Red Hat package): 1-2.el8_4

kpatch-patch-4_18_0-305_19_1 (Red Hat package): 1-1.el8_4 - 1-3.el8_4

kpatch-patch-4_18_0-305_17_1 (Red Hat package): 1-1.el8_4 - 1-3.el8_4

kpatch-patch-4_18_0-305_12_1 (Red Hat package): 1-2.el8_4 - 1-4.el8_4

kpatch-patch-4_18_0-305_10_2 (Red Hat package): 1-3.el8_4 - 1-5.el8_4

kpatch-patch-4_18_0-305 (Red Hat package): 1-2.el8 - 1-8.el8

Red Hat Enterprise Linux Server for x86_64 - Update Services for SAP Solutions: 8.4

Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions: 8.4

Red Hat Enterprise Linux Server - TUS: 8.4

Red Hat Enterprise Linux for Power, little endian - Extended Update Support: 8.4

Red Hat Enterprise Linux Server - AUS: 8.4

Red Hat Enterprise Linux for x86_64 - Extended Update Support: 8.4

kpatch-patch-4_18_0-305_30_1 (Red Hat package): before 1-2.el8_4

kpatch-patch-4_18_0-305_28_1 (Red Hat package): before 1-2.el8_4

CPE2.3 External links

https://access.redhat.com/errata/RHSA-2022:0231


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.



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