#VU104291 Memory leak in Linux kernel - CVE-2022-49468

Vulnerability identifier: #VU104291

Vulnerability risk: Low

CVSSv4.0: 1.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:U/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-49468

CWE-ID: CWE-401

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Linux kernel
Operating systems & Components / Operating system

Vendor: Linux Foundation

Description

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

The vulnerability exists due to memory leak within the __thermal_cooling_device_register() function in drivers/thermal/thermal_core.c. A local user can perform a denial of service (DoS) attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: 5.18, 5.18 rc1, 5.18 rc2, 5.18 rc3, 5.18 rc5, 5.18 rc6, 5.18 rc7, 5.18 rc8, 5.18.1, 5.18.2

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External links
https://git.kernel.org/stable/c/18530bedd221160823f63ccc20dd55c7a03edbcf
https://git.kernel.org/stable/c/21ccc58b671aea924f2481cf5c1cf0ebbfd3552d
https://git.kernel.org/stable/c/3802171f0b5b8b831f4ade5c827547cb323a5bb2
https://git.kernel.org/stable/c/98a160e898c0f4a979af9de3ab48b4b1d42d1dbb
https://git.kernel.org/stable/c/9abdf0c0184230f0cb5c6685aabf33dda89aa9fb
https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.18.3

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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.