#VU99845 Memory leak in Linux kernel - CVE-2024-50102

Vulnerability identifier: #VU99845

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-2024-50102

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 IS_ENABLED() function in arch/x86/lib/getuser.S, within the RUNTIME_CONST() function in arch/x86/kernel/vmlinux.lds.S, within the arch_cpu_finalize_init() function in arch/x86/kernel/cpu/common.c. A local user can perform a denial of service (DoS) attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: 6.11, 6.11.1, 6.11.2, 6.11.3, 6.11.4, 6.11.5

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External links
https://git.kernel.org/stable/c/291313693677a345d4f50aae3c68e28b469f601e
https://git.kernel.org/stable/c/86e6b1547b3d013bc392adf775b89318441403c2
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.11.6
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.12

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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.