Red Hat Enterprise Linux 7 update for kernel-rt

1) Use-after-free

EUVDB-ID: #VU69799

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-2022-3564

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_reassemble_sdu() function in net/bluetooth/l2cap_core.c. An attacker with physical access 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 Enterprise Linux for Real Time: 7

Red Hat Enterprise Linux for Real Time for NFV: 7

kernel-rt (Red Hat package): before 3.10.0-1160.95.1.rt56.1241.el7

CPE2.3

• cpe:2.3:o:red_hat:red_hat_enterprise_linux_for_real_time:7:*:*:*:*:red_hat_enterprise_linux:*:
• cpe:2.3:o:red_hat:red_hat_enterprise_linux_for_real_time_for_nfv:7:*:*:*:*:red_hat_enterprise_linux:*:
• cpe:2.3:o:red_hat:kernel-rt_redhat_package:*:*:*:*:*:red_hat_enterprise_linux:*:

External links

http://access.redhat.com/errata/RHSA-2023:4150

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.