Red Hat Enterprise Linux 9.0 Extended Update Support update for kpatch-patch

Published: 2023-03-23 | Updated: 2024-05-13

Risk	Medium
Patch available	YES
Number of vulnerabilities	5
CVE-ID	CVE-2022-3564 CVE-2022-4378 CVE-2022-4379 CVE-2023-0179 CVE-2023-0266
CWE-ID	CWE-416 CWE-121 CWE-190
Exploitation vector	Network
Public exploit	Public exploit code for vulnerability #2 is available. Public exploit code for vulnerability #4 is available. Vulnerability #5 is being exploited in the wild.
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-5_14_0-70_43_1 (Red Hat package) Operating systems & Components / Operating system package or component kpatch-patch-5_14_0-70_36_1 (Red Hat package) Operating systems & Components / Operating system package or component kpatch-patch-5_14_0-70_30_1 (Red Hat package) Operating systems & Components / Operating system package or component kpatch-patch-5_14_0-70_26_1 (Red Hat package) Operating systems & Components / Operating system package or component kpatch-patch-5_14_0-70_22_1 (Red Hat package) Operating systems & Components / Operating system package or component Red Hat Enterprise Linux for Power, little endian - Extended Update Support 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 5 vulnerabilities.

1) Use-after-free

EUVDB-ID: #VU69799

Risk: Low

CVSSv4.0: 4 [CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-3564

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows an attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error within the l2cap_reassemble_sdu() function in net/bluetooth/l2cap_core.c. An attacker with physical access to device can trigger a use-after-free error and execute arbitrary code on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions: 9.0

Red Hat Enterprise Linux for Power, little endian - Extended Update Support: 9.0

Red Hat Enterprise Linux for x86_64 - Extended Update Support: 9.0

kpatch-patch-5_14_0-70_43_1 (Red Hat package): before 1-1.el9_0

kpatch-patch-5_14_0-70_36_1 (Red Hat package): before 1-2.el9_0

kpatch-patch-5_14_0-70_30_1 (Red Hat package): before 1-3.el9_0

kpatch-patch-5_14_0-70_26_1 (Red Hat package): before 1-5.el9_0

kpatch-patch-5_14_0-70_22_1 (Red Hat package): before 1-6.el9_0

CPE2.3

External links

https://access.redhat.com/errata/RHSA-2023:1435

Q & A

Can this vulnerability be exploited remotely?

No. The attacker should have physical access to the system in order to successfully exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Stack-based buffer overflow

EUVDB-ID: #VU70442

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-2022-4378

CWE-ID: CWE-121 - Stack-based buffer overflow

Exploit availability: No

Description

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

The vulnerability exists due to a boundary error within the __do_proc_dointvec() function. A local user can trigger a stack-based buffer overflow and execute arbitrary code with elevated privileges.