Red Hat Enterprise Linux 8 update for kpatch-patch



| Updated: 2025-01-10
Risk Low
Patch available YES
Number of vulnerabilities 6
CVE-ID CVE-2023-3090
CVE-2023-3390
CVE-2023-35001
CVE-2023-35788
CVE-2023-3776
CVE-2023-4004
CWE-ID CWE-787
CWE-416
Exploitation vector Local
Public exploit Public exploit code for vulnerability #3 is available.
Public exploit code for vulnerability #6 is available.
Vulnerable software
 Red Hat Enterprise Linux for Power, little endian
Operating systems & Components / Operating system

Red Hat Enterprise Linux for x86_64
Operating systems & Components / Operating system

kpatch-patch-4_18_0-477_21_1 (Red Hat package)
Operating systems & Components / Operating system package or component

kpatch-patch-4_18_0-477_15_1 (Red Hat package)
Operating systems & Components / Operating system package or component

kpatch-patch-4_18_0-477_13_1 (Red Hat package)
Operating systems & Components / Operating system package or component

kpatch-patch-4_18_0-477_10_1 (Red Hat package)
Operating systems & Components / Operating system package or component

Vendor Red Hat Inc.

Security Bulletin

This security bulletin contains information about 6 vulnerabilities.

1) Out-of-bounds write

EUVDB-ID: #VU78010

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-2023-3090

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 ipvlan network driver 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

Red Hat Enterprise Linux for Power, little endian: 8

Red Hat Enterprise Linux for x86_64: 8.0

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

kpatch-patch-4_18_0-477_15_1 (Red Hat package): before 1-2.el8_8

kpatch-patch-4_18_0-477_13_1 (Red Hat package): before 1-2.el8_8

kpatch-patch-4_18_0-477_10_1 (Red Hat package): before 1-3.el8_8

CPE2.3 External links

https://access.redhat.com/errata/RHSA-2023:5221


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

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-2023-3390

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.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Red Hat Enterprise Linux for Power, little endian: 8

Red Hat Enterprise Linux for x86_64: 8.0

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

kpatch-patch-4_18_0-477_15_1 (Red Hat package): before 1-2.el8_8

kpatch-patch-4_18_0-477_13_1 (Red Hat package): before 1-2.el8_8

kpatch-patch-4_18_0-477_10_1 (Red Hat package): before 1-3.el8_8

CPE2.3 External links

https://access.redhat.com/errata/RHSA-2023:5221


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) Out-of-bounds write

EUVDB-ID: #VU78326

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-2023-35001

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

Exploit availability: Yes

Description

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

The vulnerability exists due to a boundary error within the nft_byteorder() function. A local user can trigger an out-of-bounds write and execute arbitrary code on the target system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Red Hat Enterprise Linux for Power, little endian: 8

Red Hat Enterprise Linux for x86_64: 8.0

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

kpatch-patch-4_18_0-477_15_1 (Red Hat package): before 1-2.el8_8

kpatch-patch-4_18_0-477_13_1 (Red Hat package): before 1-2.el8_8

kpatch-patch-4_18_0-477_10_1 (Red Hat package): before 1-3.el8_8

CPE2.3 External links

https://access.redhat.com/errata/RHSA-2023:5221


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. However, proof of concept for this vulnerability is available.

4) Out-of-bounds write

EUVDB-ID: #VU77502

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-2023-35788

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 fl_set_geneve_opt() function in net/sched/cls_flower.c 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

Red Hat Enterprise Linux for Power, little endian: 8

Red Hat Enterprise Linux for x86_64: 8.0

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

kpatch-patch-4_18_0-477_15_1 (Red Hat package): before 1-2.el8_8

kpatch-patch-4_18_0-477_13_1 (Red Hat package): before 1-2.el8_8

kpatch-patch-4_18_0-477_10_1 (Red Hat package): before 1-3.el8_8

CPE2.3 External links

https://access.redhat.com/errata/RHSA-2023:5221


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: #VU79285

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-2023-3776

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's net/sched: cls_fw 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

Red Hat Enterprise Linux for Power, little endian: 8

Red Hat Enterprise Linux for x86_64: 8.0

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

kpatch-patch-4_18_0-477_15_1 (Red Hat package): before 1-2.el8_8

kpatch-patch-4_18_0-477_13_1 (Red Hat package): before 1-2.el8_8

kpatch-patch-4_18_0-477_10_1 (Red Hat package): before 1-3.el8_8

CPE2.3 External links

https://access.redhat.com/errata/RHSA-2023:5221


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) Use-after-free

EUVDB-ID: #VU79498

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-2023-4004

CWE-ID: CWE-416 - Use After Free

Exploit availability: Yes

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 way a user triggers the nft_pipapo_remove function with the element, without a NFT_SET_EXT_KEY_END. A local user can execute arbitrary code with elevated privileges.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Red Hat Enterprise Linux for Power, little endian: 8

Red Hat Enterprise Linux for x86_64: 8.0

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

kpatch-patch-4_18_0-477_15_1 (Red Hat package): before 1-2.el8_8

kpatch-patch-4_18_0-477_13_1 (Red Hat package): before 1-2.el8_8

kpatch-patch-4_18_0-477_10_1 (Red Hat package): before 1-3.el8_8

CPE2.3 External links

https://access.redhat.com/errata/RHSA-2023:5221


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. However, proof of concept for this vulnerability is available.



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