#VU102189 Input validation error in Linux kernel - CVE-2024-56673

Vulnerability identifier: #VU102189

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-2024-56673

CWE-ID: CWE-20

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 improper input validation within the free_pte_table(), free_pmd_table() and remove_pud_mapping() functions in arch/riscv/mm/init.c. A local user can perform a denial of service (DoS) attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: 6.12, 6.12.1, 6.12.2, 6.12.3, 6.12.4, 6.12.5

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External links
https://git.kernel.org/stable/c/21f1b85c8912262adf51707e63614a114425eb10
https://git.kernel.org/stable/c/344945806f2f7af68be98bac02836c867f223aa9
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.12.6

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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.