Red Hat Enterprise Linux 9 update for kpatch-patch

Published: 2024-03-14

Risk	Low
Patch available	YES
Number of vulnerabilities	6
CVE-ID	CVE-2023-2163 CVE-2023-3390 CVE-2023-3609 CVE-2023-4622 CVE-2024-0646 CVE-2023-6546
CWE-ID	CWE-787 CWE-416 CWE-362
Exploitation vector	Local
Public exploit	N/A
Vulnerable software Subscribe	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_85_1 (Red Hat package) Operating systems & Components / Operating system package or component kpatch-patch-5_14_0-70_80_1 (Red Hat package) Operating systems & Components / Operating system package or component kpatch-patch-5_14_0-70_75_1 (Red Hat package) Operating systems & Components / Operating system package or component kpatch-patch-5_14_0-70_70_1 (Red Hat package) Operating systems & Components / Operating system package or component kpatch-patch-5_14_0-70_64_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 6 vulnerabilities.

1) Out-of-bounds write

EUVDB-ID: #VU79673

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-2023-2163

CWE-ID: CWE-787 - Out-of-bounds write

Exploit availability: No

Description

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

The vulnerability exists due to a boundary error in BPF verifier caused by improper marking of registers for precision tracking in certain situations. A local user can trigger an out-of-bounds write 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: 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_85_1 (Red Hat package): before 1-2.el9_0

kpatch-patch-5_14_0-70_80_1 (Red Hat package): before 1-3.el9_0

kpatch-patch-5_14_0-70_75_1 (Red Hat package): before 1-4.el9_0

kpatch-patch-5_14_0-70_70_1 (Red Hat package): before 1-5.el9_0

kpatch-patch-5_14_0-70_64_1 (Red Hat package): before 1-6.el9_0

External links

http://access.redhat.com/errata/RHSA-2024:1253

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: #VU78007

Risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-3390

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 net/netfilter/nf_tables_api.c in the Linux kernel netfilter subsystem. A local user can trigger a use-after-fee error and escalate privileges on the system.