Incorrect calculation in Linux kernel iommu driver

1) Incorrect calculation

EUVDB-ID: #VU108896

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-2025-37877

CWE-ID: CWE-682 - Incorrect Calculation

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to incorrect calculation within the iommu_deinit_device() function in drivers/iommu/iommu.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 - 6.12.25

CPE2.3

• cpe:2.3:o:linux_foundation:linux_kernel:6.12:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:6.12.1:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:6.12.2:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:6.12.3:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:6.12.4:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:6.12.5:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:6.12.6:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:6.12.7:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:6.12.8:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:6.12.9:*:*:*:*:*:*:*

External links

https://git.kernel.org/stable/c/104a84276821aed0ed241ce0d82d6c3267e3fcb8
https://git.kernel.org/stable/c/280e5a30100578106a4305ce0118e0aa9b866f12
https://git.kernel.org/stable/c/b14d98641312d972bb3f38e82eddf92898522389
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.12.26

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.