Red Hat Enterprise Linux 8.1 Update Services for SAP Solutions update for kpatch-patch

Published: 2023-05-17

Risk	Medium
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2023-0461 CVE-2023-1390
CWE-ID	CWE-416 CWE-835
Exploitation vector	Network
Public exploit	N/A
Vulnerable software	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_0-147_81_1 (Red Hat package) Operating systems & Components / Operating system package or component kpatch-patch-4_18_0-147_80_1 (Red Hat package) Operating systems & Components / Operating system package or component kpatch-patch-4_18_0-147_78_1 (Red Hat package) Operating systems & Components / Operating system package or component kpatch-patch-4_18_0-147_77_1 (Red Hat package) Operating systems & Components / Operating system package or component kpatch-patch-4_18_0-147_76_1 (Red Hat package) Operating systems & Components / Operating system package or component
Vendor	Red Hat Inc.

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Use-after-free

EUVDB-ID: #VU72506

Risk: Low

CVSSv4.0: 5.9 [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:U/U:Clear]

CVE-ID: CVE-2023-0461

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 Upper Level Protocol (ULP) subsystem in Linux kernel caused by improper handling of sockets entering the LISTEN state in certain protocols. A local user can trigger a use-after-free error and execute arbitrary code with elevated privileges.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions: 8.1

kpatch-patch-4_18_0-147_81_1 (Red Hat package): before 1-1.el8_1

kpatch-patch-4_18_0-147_80_1 (Red Hat package): before 1-2.el8_1

kpatch-patch-4_18_0-147_78_1 (Red Hat package): before 1-3.el8_1

kpatch-patch-4_18_0-147_77_1 (Red Hat package): before 1-4.el8_1

kpatch-patch-4_18_0-147_76_1 (Red Hat package): before 1-4.el8_1

CPE2.3

External links

https://access.redhat.com/errata/RHSA-2023:3191

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) Infinite loop

EUVDB-ID: #VU74631

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-1390

CWE-ID: CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')