Red Hat Enterprise Linux 7.6 update for kpatch-patch



| Updated: 2024-03-30
Risk Low
Patch available YES
Number of vulnerabilities 4
CVE-ID CVE-2021-4083
CVE-2021-0920
CVE-2022-22942
CVE-2022-0330
CWE-ID CWE-416
CWE-264
CWE-119
Exploitation vector Local
Public exploit Vulnerability #2 is being exploited in the wild.
Vulnerability #3 is being exploited in the wild.
Vulnerable software
Subscribe 		kpatch-patch-3_10_0-957_86_1 (Red Hat package)
Operating systems & Components / Operating system package or component

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

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_88_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 4 vulnerabilities.

1) Use-after-free

EUVDB-ID: #VU61246

Risk: Low

CVSSv3.1: 6.1 [CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-4083

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

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 Linux kernel's garbage collection for Unix domain socket file handlers. A local user can call close() and fget() simultaneously and can potentially trigger a race condition, which in turn leads to a use-after-free error and allows privilege escalation.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

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

kpatch-patch-3_10_0-957_84_1 (Red Hat package): 1-1.el7 - 1-2.el7

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

kpatch-patch-3_10_0-957_78_2 (Red Hat package): 1-1.el7 - 1-4.el7

kpatch-patch-3_10_0-957_76_1 (Red Hat package): 1-1.el7 - 1-5.el7

kpatch-patch-3_10_0-957_72_1 (Red Hat package): 1-1.el7 - 1-5.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_88_1 (Red Hat package): before 1-1.el7

CPE2.3 External links

http://access.redhat.com/errata/RHSA-2022:1103


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) Use-after-free

EUVDB-ID: #VU59811

Risk: Low

CVSSv3.1: 6.1 [CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C]

CVE-ID: CVE-2021-0920

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

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 unix_scm_to_skb() function of af_unix.c in Linux kernel. A local user can run a specially crafted program to trigger a race condition and execute arbitrary code with elevated privileges.


Mitigation

Install updates from vendor's website.

Vulnerable software versions

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

kpatch-patch-3_10_0-957_84_1 (Red Hat package): 1-1.el7 - 1-2.el7

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

kpatch-patch-3_10_0-957_78_2 (Red Hat package): 1-1.el7 - 1-4.el7

kpatch-patch-3_10_0-957_76_1 (Red Hat package): 1-1.el7 - 1-5.el7

kpatch-patch-3_10_0-957_72_1 (Red Hat package): 1-1.el7 - 1-5.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_88_1 (Red Hat package): before 1-1.el7

CPE2.3 External links

http://access.redhat.com/errata/RHSA-2022:1103


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: #VU61217

Risk: Low

CVSSv3.1: 7.5 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C]

CVE-ID: CVE-2022-22942

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 an error in the vmwgfx driver in Linux kernel. A local unprivileged user can gain access to files opened by other processes on the system through a dangling 'file' pointer.

Exploiting this vulnerability requires an attacker to have access to either /dev/dri/card0 or /dev/dri/rendererD128 and be able to issue an ioctl() on the resulting file descriptor.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

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

kpatch-patch-3_10_0-957_84_1 (Red Hat package): 1-1.el7 - 1-2.el7

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

kpatch-patch-3_10_0-957_78_2 (Red Hat package): 1-1.el7 - 1-4.el7

kpatch-patch-3_10_0-957_76_1 (Red Hat package): 1-1.el7 - 1-5.el7

kpatch-patch-3_10_0-957_72_1 (Red Hat package): 1-1.el7 - 1-5.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_88_1 (Red Hat package): before 1-1.el7

CPE2.3 External links

http://access.redhat.com/errata/RHSA-2022:1103


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.

4) Buffer overflow

EUVDB-ID: #VU60988

Risk: Low

CVSSv3.1: 7.7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-0330

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

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

The vulnerability exists due to a random memory access flaw caused by a missing TLB flush in Linux kernel GPU i915 kernel driver functionality. A local user can execute arbitrary code on the system with elevated privileges.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

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

kpatch-patch-3_10_0-957_84_1 (Red Hat package): 1-1.el7 - 1-2.el7

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

kpatch-patch-3_10_0-957_78_2 (Red Hat package): 1-1.el7 - 1-4.el7

kpatch-patch-3_10_0-957_76_1 (Red Hat package): 1-1.el7 - 1-5.el7

kpatch-patch-3_10_0-957_72_1 (Red Hat package): 1-1.el7 - 1-5.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_88_1 (Red Hat package): before 1-1.el7

CPE2.3 External links

http://access.redhat.com/errata/RHSA-2022:1103


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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