Memory leak in Linux kernel devfreq event driver

1) Memory leak

EUVDB-ID: #VU104331

Risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-49668

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 of_get_devfreq_events() function in drivers/devfreq/event/exynos-ppmu.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

• cpe:2.3:o:linux_foundation:linux_kernel:*:*:*:*:*:*:*:*

External links

https://git.kernel.org/stable/c/01121e39ef537289926ae6f5374dce92c796d863
https://git.kernel.org/stable/c/194781229d4cbc804b8ded13156eb8addce87d6c
https://git.kernel.org/stable/c/bdecd912e99acfd61507f1720d3f4eed1b3418d8
https://git.kernel.org/stable/c/e65027fdebbacd40595e96ef7b5d2418f71bddf2
https://git.kernel.org/stable/c/f44b799603a9b5d2e375b0b2d54dd0b791eddfc2

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.