Input validation error in Linux kernel fs

1) Input validation error

EUVDB-ID: #VU100152

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-2024-50204

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

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 copy_mnt_ns() function in fs/namespace.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 - 6.11.5

CPE2.3

• cpe:2.3:o:linux_foundation:linux_kernel:6.11:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:6.11.1:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:6.11.2:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:6.11.3:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:6.11.4:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:6.11.5:*:*:*:*:*:*:*

External links

https://git.kernel.org/stable/c/a8b155a2c30dc9a5ba837aa5fcba9a47cc031a9b
https://git.kernel.org/stable/c/229fd15908fe1f99b1de4cde3326e62d1e892611
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

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.