#VU105674 Resource management error in Linux kernel - CVE-2025-21861

Vulnerability identifier: #VU105674

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-2025-21861

CWE-ID: CWE-399

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 resource management error within the migrate_device_finalize() function in mm/migrate_device.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, 6.12.6, 6.12.7, 6.12.8, 6.12.9, 6.12.10, 6.12.11, 6.12.12, 6.12.13, 6.12.14, 6.12.15, 6.12.16, 6.13, 6.13.1, 6.13.2, 6.13.3, 6.13.4

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External links
https://git.kernel.org/stable/c/069dd21ea8262204f94737878389c2815a054a9e
https://git.kernel.org/stable/c/3f9240d59e9a95d19f06120bfd1d0e681c6c0ac7
https://git.kernel.org/stable/c/41cddf83d8b00f29fd105e7a0777366edc69a5cf
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.12.17
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.13.5
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.14

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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.