Privilege escalation in Linux kernel Bluetooth

1) Double Free

EUVDB-ID: #VU74147

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-2023-28464

CWE-ID: CWE-415 - Double Free

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 hci_conn_cleanup() function in net/bluetooth/hci_conn.c in Linux kernel. A local user can trigger a double free error and execute arbitrary code with elevated privileges.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Linux kernel: All versions

External links

http://seclists.org/oss-sec/2023/q1/200
http://lore.kernel.org/lkml/20230309074645.74309-1-wzhmmmmm@gmail.com/

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.