#VU104279 Memory leak in Linux kernel - CVE-2022-49437

Vulnerability identifier: #VU104279

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-2022-49437

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 xive_spapr_init() and xive_irq_bitmap_remove_all() functions in arch/powerpc/sysdev/xive/spapr.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

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External links
https://git.kernel.org/stable/c/1d1fb9618bdd5a5fbf9a9eb75133da301d33721c
https://git.kernel.org/stable/c/65f11ccdd746e0e7f0b469cc989ba43d4f30ecfe
https://git.kernel.org/stable/c/6e806485d851986a2445267608f27cb4ba2ed774
https://git.kernel.org/stable/c/cc62dde2a5f4ba14016fd9caec76f08d388f4b9c

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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.