#VU104381 Memory leak in Linux kernel - CVE-2022-49144

Vulnerability identifier: #VU104381

Vulnerability 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-2022-49144

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 __io_sqe_files_scm() function in fs/io_uring.c. A local user can perform a denial of service (DoS) attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: 5.16, 5.16 rc1, 5.16 rc2, 5.16 rc3, 5.16 rc4, 5.16 rc5, 5.16 rc6, 5.16 rc8, 5.16.0, 5.16.1, 5.16.2, 5.16.3, 5.16.4, 5.16.5, 5.16.6, 5.16.7, 5.16.8, 5.16.9, 5.16.10, 5.16.11, 5.16.12, 5.16.13, 5.16.14, 5.16.15, 5.16.16, 5.16.17, 5.16.18

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External links
https://git.kernel.org/stable/c/0853bd6885c2f293d88aaa7f7f1702c959b31680
https://git.kernel.org/stable/c/7fa8b228c3f30060b9f4b24bb9aaaf41b0ae83fe
https://git.kernel.org/stable/c/b27de7011cb3ba14b047be2cee0ed8278368665b
https://git.kernel.org/stable/c/c86d18f4aa93e0e66cda0e55827cd03eea6bc5f8
https://git.kernel.org/stable/c/d6d7a517e81accf6ed22d55684baea763d2dbe43
https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16.19

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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.