Red Hat Enterprise Linux 7 update for kpatch-patch

Published: 2024-03-14 | Updated: 2024-06-16

Risk	High
Patch available	YES
Number of vulnerabilities	4
CVE-ID	CVE-2023-4921 CVE-2023-45871 CVE-2022-42896 CVE-2023-31436
CWE-ID	CWE-416 CWE-119 CWE-787
Exploitation vector	Network
Public exploit	N/A
Vulnerable software	Red Hat Enterprise Linux for Power, little endian Operating systems & Components / Operating system Red Hat Enterprise Linux Server Operating systems & Components / Operating system kpatch-patch-3_10_0-1160_99_1 (Red Hat package) Operating systems & Components / Operating system package or component kpatch-patch-3_10_0-1160_108_1 (Red Hat package) Operating systems & Components / Operating system package or component kpatch-patch-3_10_0-1160_105_1 (Red Hat package) Operating systems & Components / Operating system package or component kpatch-patch-3_10_0-1160_102_1 (Red Hat package) Operating systems & Components / Operating system package or component
Vendor	Red Hat Inc.

Security Bulletin

This security bulletin contains information about 4 vulnerabilities.

1) Use-after-free

EUVDB-ID: #VU81693

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-2023-4921

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 in the qfq_dequeue() function within the the Linux kernel's net/sched: sch_qfq component. A local user can trigger a use-after-free error and execute arbitrary code with elevated privileges.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Red Hat Enterprise Linux for Power, little endian: 7

Red Hat Enterprise Linux Server: 7

kpatch-patch-3_10_0-1160_99_1 (Red Hat package): before 1-4.el7

kpatch-patch-3_10_0-1160_108_1 (Red Hat package): before 1-1.el7

kpatch-patch-3_10_0-1160_105_1 (Red Hat package): before 1-2.el7

kpatch-patch-3_10_0-1160_102_1 (Red Hat package): before 1-3.el7

CPE2.3

External links

http://access.redhat.com/errata/RHSA-2024:1323

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) Buffer overflow

EUVDB-ID: #VU83381

Risk: High

CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-45871

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error within the IGB driver in drivers/net/ethernet/intel/igb/igb_main.c when handling frames larger than the MTU. A remote attacker can send specially crafted traffic to the system, trigger memory corruption and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Red Hat Enterprise Linux for Power, little endian: 7

Red Hat Enterprise Linux Server: 7

kpatch-patch-3_10_0-1160_99_1 (Red Hat package): before 1-4.el7

kpatch-patch-3_10_0-1160_108_1 (Red Hat package): before 1-1.el7

kpatch-patch-3_10_0-1160_105_1 (Red Hat package): before 1-2.el7

kpatch-patch-3_10_0-1160_102_1 (Red Hat package): before 1-3.el7

CPE2.3

External links

http://access.redhat.com/errata/RHSA-2024:1323

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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

3) Use-after-free

EUVDB-ID: #VU69795

Risk: Low

CVSSv3.1: 5.9 [CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-42896

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_connect() and l2cap_le_connect_req() function in net/bluetooth/l2cap_core.c. An attacker with physical proximity to the affected device can trigger a use-after-free error and execute arbitrary code on the system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Red Hat Enterprise Linux for Power, little endian: 7

Red Hat Enterprise Linux Server: 7

kpatch-patch-3_10_0-1160_99_1 (Red Hat package): before 1-4.el7

kpatch-patch-3_10_0-1160_108_1 (Red Hat package): before 1-1.el7

kpatch-patch-3_10_0-1160_105_1 (Red Hat package): before 1-2.el7

kpatch-patch-3_10_0-1160_102_1 (Red Hat package): before 1-3.el7

CPE2.3

External links

http://access.redhat.com/errata/RHSA-2024:1323

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.

4) Out-of-bounds write

EUVDB-ID: #VU76098

Risk: Low

CVSSv3.1: 7.1 [CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-31436

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 within the qfq_change_class() function in net/sched/sch_qfq.c when handling the MTU value provided to the QFQ Scheduler. A local user can trigger an out-of-bounds write and execute arbitrary code with elevated privileges.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Red Hat Enterprise Linux for Power, little endian: 7

Red Hat Enterprise Linux Server: 7

kpatch-patch-3_10_0-1160_99_1 (Red Hat package): before 1-4.el7

kpatch-patch-3_10_0-1160_108_1 (Red Hat package): before 1-1.el7

kpatch-patch-3_10_0-1160_105_1 (Red Hat package): before 1-2.el7

kpatch-patch-3_10_0-1160_102_1 (Red Hat package): before 1-3.el7

CPE2.3

External links

http://access.redhat.com/errata/RHSA-2024:1323

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.