Memory leak in Linux kernel trace

1) Memory leak

EUVDB-ID: #VU92890

Risk: Low

CVSSv3.1: 4.8 [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-2022-48768

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

Exploit availability: No

Description

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

The vulnerability exists due to memory leak within the trace_action_create() function in kernel/trace/trace_events_hist.c. A local user can perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: All versions

CPE2.3

External links

http://git.kernel.org/stable/c/8a8878ebb596281f50fc0b9a6e1f23f0d7f154e8
http://git.kernel.org/stable/c/d71b06aa995007eafd247626d0669b9364c42ad7
http://git.kernel.org/stable/c/e33fa4a46ee22de88a700e2e3d033da8214a5175
http://git.kernel.org/stable/c/df86e2fe808c3536a9dba353cc2bebdfea00d0cf
http://git.kernel.org/stable/c/e629e7b525a179e29d53463d992bdee759c950fb

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.