Red Hat Enterprise Linux 8.6 Extended Update Support update for kernel

1) Exposure of Resource to Wrong Sphere

EUVDB-ID: #VU61565

Risk: Low

CVSSv3.1: 5.7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-26341

CWE-ID: CWE-668 - Exposure of resource to wrong sphere

Exploit availability: No

Description

The vulnerability allows a local user to gain access to potentially sensitive information.

The vulnerability exists due to some AMD CPUs may transiently execute beyond unconditional direct branches. A local user can gain unauthorized access to sensitive information on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Red Hat CodeReady Linux Builder for ARM 64 - Extended Update Support: 8.6

Red Hat CodeReady Linux Builder for Power, little endian - Extended Update Support: 8.6

Red Hat CodeReady Linux Builder for x86_64 - Extended Update Support: 8.6

Red Hat Enterprise Linux for ARM 64 - Extended Update Support: 8.6

kernel (Red Hat package): before 4.18.0-372.100.1.el8_6

External links

http://access.redhat.com/errata/RHSA-2024:1877

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: #VU64438

Risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-1184

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service attack.

The vulnerability exists due to a use-after-free error in fs/ext4/namei.c:dx_insert_block() function in the Linux kernel’s filesystem sub-component.. A local user can trigger use-after-free and perform a denial of service attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Red Hat CodeReady Linux Builder for ARM 64 - Extended Update Support: 8.6

Red Hat CodeReady Linux Builder for Power, little endian - Extended Update Support: 8.6

Red Hat CodeReady Linux Builder for x86_64 - Extended Update Support: 8.6

Red Hat Enterprise Linux for ARM 64 - Extended Update Support: 8.6

kernel (Red Hat package): before 4.18.0-372.100.1.el8_6

External links

http://access.redhat.com/errata/RHSA-2024:1877

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) NULL pointer dereference

EUVDB-ID: #VU64262

Risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-1852

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error in the Linux kernel’s KVM module. A local user can perform a denial of service (DoS) attack in the x86_emulate_insn in arch/x86/kvm/emulate.c.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Red Hat CodeReady Linux Builder for ARM 64 - Extended Update Support: 8.6

Red Hat CodeReady Linux Builder for Power, little endian - Extended Update Support: 8.6

Red Hat CodeReady Linux Builder for x86_64 - Extended Update Support: 8.6

Red Hat Enterprise Linux for ARM 64 - Extended Update Support: 8.6

kernel (Red Hat package): before 4.18.0-372.100.1.el8_6

External links

http://access.redhat.com/errata/RHSA-2024:1877

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: #VU70463

Risk: Medium

CVSSv3.1: 6.6 [CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-3640

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows an attacker to compromise the affected system.

The vulnerability exists due to a use-after-free error in the 2cap_conn_del() function in net/bluetooth/l2cap_core.c in Linux kernel. An attacker with physical proximity 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 CodeReady Linux Builder for ARM 64 - Extended Update Support: 8.6

Red Hat CodeReady Linux Builder for Power, little endian - Extended Update Support: 8.6

Red Hat CodeReady Linux Builder for x86_64 - Extended Update Support: 8.6

Red Hat Enterprise Linux for ARM 64 - Extended Update Support: 8.6

kernel (Red Hat package): before 4.18.0-372.100.1.el8_6

External links

http://access.redhat.com/errata/RHSA-2024:1877

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.

5) Access of Uninitialized Pointer

EUVDB-ID: #VU69796

Risk: Low

CVSSv3.1: 2.1 [CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-42895

CWE-ID: CWE-824 - Access of Uninitialized Pointer

Exploit availability: No

Description

The vulnerability allows an attacker to gain access to sensitive information.

The vulnerability exists due to unauthorized access of uninitialized pointer within the l2cap_parse_conf_req() function in net/bluetooth/l2cap_core.c. An attacker with physical proximity to the affected device can gain access to sensitive information.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Red Hat CodeReady Linux Builder for ARM 64 - Extended Update Support: 8.6

Red Hat CodeReady Linux Builder for Power, little endian - Extended Update Support: 8.6

Red Hat CodeReady Linux Builder for x86_64 - Extended Update Support: 8.6

Red Hat Enterprise Linux for ARM 64 - Extended Update Support: 8.6

kernel (Red Hat package): before 4.18.0-372.100.1.el8_6

External links

http://access.redhat.com/errata/RHSA-2024:1877

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.

6) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU88856

Risk: Low

CVSSv3.1: 2.9 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-47099

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

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

The vulnerability exists due to a missing security check within the veth_xdp_rcv() function in drivers/net/veth.c. A local user can gain access to sensitive information.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Red Hat CodeReady Linux Builder for ARM 64 - Extended Update Support: 8.6

Red Hat CodeReady Linux Builder for Power, little endian - Extended Update Support: 8.6

Red Hat CodeReady Linux Builder for x86_64 - Extended Update Support: 8.6

Red Hat Enterprise Linux for ARM 64 - Extended Update Support: 8.6

kernel (Red Hat package): before 4.18.0-372.100.1.el8_6

External links

http://access.redhat.com/errata/RHSA-2024:1877

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.