Red Hat Enterprise Linux 8.8 Extended Update Support update for kpatch-patch

1) Use-after-free

EUVDB-ID: #VU78941

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-2023-3609

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 the Linux kernel net/sched: cls_u32 component. 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

kpatch-patch-4_18_0-477_27_1 (Red Hat package): before 1-1.el8_8

kpatch-patch-4_18_0-477_21_1 (Red Hat package): before 1-2.el8_8

kpatch-patch-4_18_0-477_15_1 (Red Hat package): before 1-3.el8_8

kpatch-patch-4_18_0-477_13_1 (Red Hat package): before 1-3.el8_8

kpatch-patch-4_18_0-477_10_1 (Red Hat package): before 1-4.el8_8

External links

http://access.redhat.com/errata/RHSA-2023:7558

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: #VU79486

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-2023-4128

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/sched/cls_fw.c in classifiers (cls_fw, cls_u32, and cls_route) in the Linux Kernel. 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

kpatch-patch-4_18_0-477_27_1 (Red Hat package): before 1-1.el8_8

kpatch-patch-4_18_0-477_21_1 (Red Hat package): before 1-2.el8_8

kpatch-patch-4_18_0-477_15_1 (Red Hat package): before 1-3.el8_8

kpatch-patch-4_18_0-477_13_1 (Red Hat package): before 1-3.el8_8

kpatch-patch-4_18_0-477_10_1 (Red Hat package): before 1-4.el8_8

External links

http://access.redhat.com/errata/RHSA-2023:7558

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.

3) Use-after-free

EUVDB-ID: #VU80580

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-2023-4206

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 the cls_route component in Linux kernel packet scheduler. A local user can trigger a use-after-free error and execute arbitrary code on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

kpatch-patch-4_18_0-477_27_1 (Red Hat package): before 1-1.el8_8

kpatch-patch-4_18_0-477_21_1 (Red Hat package): before 1-2.el8_8

kpatch-patch-4_18_0-477_15_1 (Red Hat package): before 1-3.el8_8

kpatch-patch-4_18_0-477_13_1 (Red Hat package): before 1-3.el8_8

kpatch-patch-4_18_0-477_10_1 (Red Hat package): before 1-4.el8_8

External links

http://access.redhat.com/errata/RHSA-2023:7558

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.

4) Use-after-free

EUVDB-ID: #VU80587

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-2023-4207

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 the cls_fw component in Linux kernel packet scheduler. 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

kpatch-patch-4_18_0-477_27_1 (Red Hat package): before 1-1.el8_8

kpatch-patch-4_18_0-477_21_1 (Red Hat package): before 1-2.el8_8

kpatch-patch-4_18_0-477_15_1 (Red Hat package): before 1-3.el8_8

kpatch-patch-4_18_0-477_13_1 (Red Hat package): before 1-3.el8_8

kpatch-patch-4_18_0-477_10_1 (Red Hat package): before 1-4.el8_8

External links

http://access.redhat.com/errata/RHSA-2023:7558

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.

5) Use-after-free

EUVDB-ID: #VU80586

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-2023-4208

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 the cls_u32 component in Linux kernel packet scheduler. 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

kpatch-patch-4_18_0-477_27_1 (Red Hat package): before 1-1.el8_8

kpatch-patch-4_18_0-477_21_1 (Red Hat package): before 1-2.el8_8

kpatch-patch-4_18_0-477_15_1 (Red Hat package): before 1-3.el8_8

kpatch-patch-4_18_0-477_13_1 (Red Hat package): before 1-3.el8_8

kpatch-patch-4_18_0-477_10_1 (Red Hat package): before 1-4.el8_8

External links

http://access.redhat.com/errata/RHSA-2023:7558

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.

6) Out-of-bounds write

EUVDB-ID: #VU81663

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-2023-42753

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 the netfilter subsystem in Linux kernel. 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

kpatch-patch-4_18_0-477_27_1 (Red Hat package): before 1-1.el8_8

kpatch-patch-4_18_0-477_21_1 (Red Hat package): before 1-2.el8_8

kpatch-patch-4_18_0-477_15_1 (Red Hat package): before 1-3.el8_8

kpatch-patch-4_18_0-477_13_1 (Red Hat package): before 1-3.el8_8

kpatch-patch-4_18_0-477_10_1 (Red Hat package): before 1-4.el8_8

External links

http://access.redhat.com/errata/RHSA-2023:7558

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.